Diachrograms -a theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution.

Introduction

Naturally various methods may be used to investigate the past of a given object. The concepts of synchrony and diachrony were introduced into language analysis by Ferdinand de Saussure. The former meaning analysis of the structure of language, the latter analysis of the evolution of language. Their methodological potential made them transgress the boundaries of linguistics and resulted in them being used at present in the epistemology of a great number of sciences. In the context of this methodological framework, the synchronic analysis focuses on the state of the object at a particular historical moment, whereas the diachronic analysis allows us to focus on changes over time. The third term, strictly connected with the previous two, is panchrony. Oleg Leszczak1 calls it a cognitive state -such as, for instance, knowledge. Panchrony is the concept that allows us to declare that an object retains its identity despite changes. Using the above notions, the evolution of a given object can be described as a chain of successive transformations (changes) and states (periods of stability) -the latter being consequences of the former. Transformation is seen as the diachronic function, subsequent states are seen as synchronic beings which retain the object's identity thanks to knowledge, intuition and experience -the panchronic level.

The diachrograms' role is to recap visually the lifeline of an architectural object as reported by a particular analyst, that is, with regards to one and only one interpretation and understanding of the historical evidence. They show successive changes of an object, with detailed consideration of the type, character and effects of particular transformations. They operate like a classic timeline -distance represents time with a given time granularity. Events are positioned in time, and the relative proportion of durations of particular states and transformations is retained. This naturally implies being able to define, then position and quantify in time each and every change, and this univocally. When analysing the evolution of an architectural object, there may be periods in the object's lifeline for which that level of constraint is out of reach. The main weak point of the diachrograms formalism lies there: the necessity to choose one and only "path of evolution". The reality may look different -the analyst sometimes does not have enough data to exclude alternative possibilities, and accordingly may need and want to retain them. Privileging this or that interpretation in order to end up with one unique storyline also has an indirect consequence: it pushes the analyst into micro information spaces. The object is isolated from possible alternative causal relations, its storyline is marked by hidden choices that are made, and are relevant, only in the context of this object. The framework requires a good analysis of the artefacts before making any sense, implies to thoroughly describe the evidence (including by uncertainty "measurement") and therefore is of little support in the early phases of investigations.

However, the framework meets two principles for the analysis and presentation of data quoted by (Tufte, 2006): show causality, mechanism, explanation, systematic structure and integrate evidence.

The first methodological framework proposed in 20082 identified seven transitions and states occurring within a life cycle (abandon, decay, annexation, demolition, modification, secession and segmental anaesthesia), as well as 8 transitions and states starting or ending a life cycle (creation, extinction, hibernation, internment, merge, reincarnation, split and translocation). Tags used to denote these transitions and states have been chosen as illustrative enough to let the reader grab their semantics.

The "diachrogram" formalism has been questioned and extended since then, through a series of real cases encompassing a wide range of architectural settings (from urban civil and religious architecture to isolated, poorly documented rural chapels) . This document is a preliminary compilation of changes in the model itself, and consequences on the visual formalisms that are attached to it. It comprises definitions of the concepts behind the approach, definition of the presentation grid, and tables that include a detailed definition of each state and/or transformation, along with the corresponding glyphs ("visual language").

The role of this document is to present the method in a more in-depth way than what could be done previously through classic publications, to update it with recent research results, and to facilitate its cross-examination in the scientific community. A transformation that occurred in a relatively short period with respect to the time granulation adopted in the analysis.

I. Dudek, J.Y Blaise

A duration of a short-term transformation is smaller or equal to one chronon, therefore the qualification of a duration of a transformation depends on a time granulation adopted in the analysis. In our analyses we have adopted one-year chronon, consequently a short-term transformation is one that lasts one year or less. A condition in which an artefact or its portion performs -at least partially -its usual role (e.g., the building is in use).

[ina] inactive inactif s. nieaktywny A condition in which an artefact or its portion does not perform at all its usual role (e.g., no functional activity).

visibility status visibilité widoczność

[app] overground émergé nadziemny A condition in which an artefact contains overground elements.

[con] concealed immergé podziemny A condition in which an artefact is entirely composed from underground elements.

Σ(ωn-ω n+1) cycle of life cycle de vie cykl życiowy

An artefact's life cycle identifies a time slot corresponding to a fragment of its evolution.

A shift between two cycles of life occurs each time an artefact enters entirely into a concealed and inactive state, or when it comes out from it (entirely or partially).

<t>ωn→ωn+1 transformation transformation transformacja

A process during which an artefact changes. The alteration may concern an entire artefact (e.g., an overall renovation), or be limited to its fragment (e.g., a fire of a roof).

ωn state état stan

A period in the existence of an artefact during which its features remain constant (in the same condition, not changing).

Σ(ω0-ωmax)

evolution of artefact évolution de l'artefact ewolucja obiektu

The process of gradual development of an artefact over its whole life span, from its creation until its extinction (i.e., its thorough and irreversible physical removal).

transformation state name (en) name (fr), name (pl) Hibernation appears as a result of a total disappearance of an artefact's overground parts (if they ever existed*) combined with a cessation of any functional activity inside the remaining inaccessible and concealed part.

< > < > [] [] _ _ _ _
An artefact may be considered as "hibernating" if, and only if its entire structure is covered by ground and all its functional activities ceased. One can talk about a •hibernation only in case of underground structures.

Structures that are permanently flooded, but are not buried under ground are not hibernating. According to their state, they may be considered as abandoned (cf.

•abandon), or decaying (cf. •decay).

[state]

A •hibernation is an inactive and concealed state of an entire artefact.

A transformation that leads to the state of hibernation is always a global, terminating and transmigrating one, therefore the state of hibernation always appears in a secondary and uniform cycle of life.

An overground artefact may enter into a •hibernation after a →destruction (e.g., dismantling A sporadic, occasional activity inside a hibernating artefact is possible -an archaeological intervention for example. Such an incident does not interrupt the •hibernation of the artefact, yet the results of such intervention may close it (e.g., an adaptation and reuse of a hibernating artefact bring to the end the state of hibernation).

Do not confuse •hibernation with •buried vestige or •interment.

[state]

a) d) g) c) b) e) h) i) f)
* An underground structure may enter into the state of hibernation after a definite obstruction of all entrances to the artefact.

segmental anaesthesia anesthésie partielle, segmentowe uśpienie [ina] [con] [app] _p_ _s_ _c_

Segmental anaesthesia concerns a portion of an artefact. It manifests itself through a complete loss of functional activity inside a segment that goes with a dissolution of all functional connexions that the segment could have with the remaining object.

A portion of an artefact may be considered as an "anaesthetised segment" if, and only if it becomes inaccessible from the core object and its own functional activity is reduced to zero.

We are talking about a •segmental anaesthesia generally in the case of underground structures (e.g., a basement). However, this state may also appear in case of overground structures.

A sporadic activity inside an anesthetised segment is possible -an archaeological intervention for example. It does not interrupt the state of segmental anaesthesia of the segment.

[state]

An anaesthetised segment is a segment in an inactive and most often concealed state. It occurs as a consequence of a partial transformation and concerns only a portion of an artefact. A transformation that leads to a •segmental anaesthesia is always a partial transformation therefore a state of segmental anaesthesia always leads to a compound cycle of life without starting a new cycle.

A •segmental anaesthesia may emerge in a primal or a secondary cycle of life.

An anaesthetised segment may come back into an active state thanks to a →modification. The segment simply re-joins the core object (see Fig. c). Coming out from the state of segmental anaesthesia may be a short-term transformation, but most frequently it is a long-lasting process.

An →abandon of the core object marks automatically the end of the •segmental anaesthesia of its segment(s) -in this case, segment(s) under consideration rejoins the core object in an inactive state (see Fig. h). A similar effect may result from a combination of some others transformations (e.g., →destruction leading to →decay).

When the segmental anaesthesia concerns underground structures, a →destruction of the totality of a core object (as a global transformation) transforms a state of concerned segment(s) from the state of segmental anaesthesia into the state of hibernation (see Fig. i).

[state] In the majority of cases split leads to the creation of independent artefacts (B,C,…). Fragment(s) resulting from a →split, may however never appear as an independent artefact (e.g., a fragment (a') resulting from →spilt of (A) may be →annexed by an artefact (D) in the moment of a →split, and therefore will not appear as an independent artefact).

a) b) d) f) c) h) i) e) g)
<transformation> Split is a global transformation -it always affects an entire artefact.

It is always a terminating and never a transmigrating transformation. It terminates the current cycle of life of an artefact generally starting new primal cycles inside the evolution of the resulting objects. In those cases, it is an opening transformation.

With some exceptions (see Fig. The most common consequence of a →split is a →creation. In those cases, a →creation will be a resulting transformation.

A →split, does not require any other transformation to take place, it is therefore an independent transformation. It is often a result of a property's division. A →secession never acts as a closing transformation.

Like a →split it does not require any other transformation to take place, it is therefore an independent transformation. It is often a result of a property's division.

A →secession may be a short-term event (see Fig. In case of a →split or a →secession, a →creation is not a corollary transformation, however it is a corollary transformation of →merge (see Fig. f).

→Creation may be a short-term event (see Abandon is a result or a process of withdrawing all human presence and activity from an entire artefact, when the object is still in an overground state.

An artefact may be considered as "abandoned" if, and only if it is an overground structure that became inactive due to a total standstill of its functional activity. A sporadic, occasional activity inside an abandoned segment (e.g., a photographical survey) is possible without changing the state of the artefact to an active one. →Abandon does not require any other transformation to take place, is an independent transformation.

If an artefact is in a compound cycle of life (i.e., it is composed of an active core object and inactive segment(s)) and its core object becomes abandoned, all inactive segments re-join automatically the core object in its current cycle of life (see Fig. b andf). In other words, →abandon transformation terminates a state of •segmental anaesthesia or •hibernation.

A →modification may act as a transformation that reverses the results of →abandon.(see Fig. h)

[state]

An abandoned artefact is always in an inactive state in a uniform cycle of life.

The core object necessarily contains overground parts otherwise we should talk about a state of •hibernation or •interment.

As already mentioned, a →modification may lead an artefact out from a state of •abandonment and allows it to return to an active state (see Fig. Decay is a process of gradual degradation of an artefact, frequently leading to its →destruction or •hibernation. The state of decay is a possible consequence of a long-term abandon of an artefact, or a destruction (related to environmental causes or human activity).

An artefact may be considered as "in decay" if, and only if it is in an inactive state, and contains overground structures without a roofing. In case of edifices, a decay starts with a breakdown of its protection -its roof. The decay transformation starts when the first part of the artefact's roof goes down, and ends when it collapses definitively. The state of decay tan begins.

The state of decay should not be confused with the state of vestige (cf. •vestige). <transformation> Decay is a global and altering transformation. It affects always an entire artefact, transforming it inside its current cycle of life (primal or secondary).

A result of a →decay is always an artefact in a uniform cycle of life. This transformation may be a short-term event (see A →decay never acts as a closing transformation.

A →modification may act as a reversing transformation for a →decay (see Fig. e).

[state]

An artefact in decay necessarily contains overground structures deprived of a roofing, and it is always an element of a uniform cycle of life in an inactive state.

A •decay may appear in a primary (see Fig. a, b, d ande) or in a secondary (see Fig. A →modification may lead an artefact out of a •decay (e.g., a revitalisation and adaptation of ruins into a museum) (see Fig. Correspondingly, the results of →extinction may appear in each cycle of life and in every state.

An →extinction may be a short-term event (see Fig. a-c, e and h), as well as a longlasting process (see Fig. d, f, g, andi).

A reversing transformation for an →extinction does not exist. It is indispensable that a reincarnated artefact contains, at least partially elements of the original artefact (the 'reincarnation' of which it is supposed to be), and that newly added elements complement original ones rather than dominate them.

The reincarnation transformation cannot lead to the state of vestige (cf.

•vestige), since there is no new embodiment of the artefact, and no complementary elements added. In the second case, a →reincarnation is a global and transmigrating transformation, always accompanied by another transformation (combining transformation (→merge, →annexation) or dividing one (→secession, →split)). It is therefore a resulting transformation. In both cases, a →reincarnation may be a short-term event (see Fig. a-c) or a longlasting process (see Fig. d-i).

It always occurs in an opening phase of a secondary cycle of life.

A →reincarnation may result with an artefact in a uniform (see Fig. a-f, h andi), or in a compound cycle of life (see Fig. g). It means that some portions of an artefact may not be subjects of reincarnation.

A reincarnated artefact is always in an active state and in a secondary cycle of life. It may be a concealed or overground object. What differentiates a decreasing →modification from an intentional human-based degradation (→destruction) the underlying objective of the action -a modification is an attempt to renew, repurpose, improve the edifice, even if that implies partial destruction.

A →modification may be a short-term event (see Fig. a-c), as well as a long-lasting process (see Fig. d-i).

It is an independent transformation.

Modification is an auto-reversing transformation. A →creation is a corollary transformation for a →merge -it is a natural and unavoidable consequence of a →merge. <transformation> It is a closing and an opening transformation.

For artefacts that have merged, it acts as a closing (but potentially reversible) transformation (see Fig. A →split is a transformation that can potentially reveres results of a →merge.

Together with →split, →annexation, →secession, →translocation, →reincarnation and →move_and_swap, →merge forms a group of transmigrating transformations.

Do not confuse a →merge with an →annexation. In this case, it is a partial transformation. It may concern overground parts, as well as concealed elements, in an active or inactive state, in a uniform or a compound cycle of life.

Consequently, an →annexation can give as a result, an artefact in a uniform ( It is an independent transformation, often associated with property changes (like →split, →secession and →merge).

A →secession may reverse results of an →annexation.

Do not confuse an →annexation with a →merge. Interment is the act of placing one artefact over another in such a way, that the underlying object (interred artefact) becomes an inaccessible structure. The interred artefact (affected by interment) then becomes an inactive concealed artefact covered not only by ground but also by another structure.

Interment may be a conscious and deliberate act (e.g., preventive archaeological bury), or an unintentional action (e.g., construction of a building over an artefact without the knowledge of the existence of this object).

We consider an artefact as interred, if and only if the act of placing another item over it made it completely inaccessible. It is an independent transformation that can occur both in a primary (see Fig. a, c-f), or in a secondary (see Fig. b, g-i) life cycle of an object.

[state]

An interred artefact is an inactive, concealed object.

It is always an element of a secondary uniform cycle of life.

A →demolition of an overlaying artefact may lead to a →reincarnation of the interred artefact and allow to bring it back into an active state (see Fig. Translocation is the act of alternating the location of an entire artefact or of its portion(s).

We will consider an artefact as "translocated" if, and only if, the artefact after being physically moved from one location to another is still recognised as the same object (i.e. under the same identity).

Portions of artefact may be "translocated" as well, and may subsist in one, or several locations in the same time even after an annihilation of the initial artefact. They should be therefore clearly identified as translocated portions (or fragments), and should not be confused with the initial artefact.

A →translocation of an initial artefact is a two-phase transformation. The first phase is disassembly of an artefact and the second is reconstruction of the object at its final destination (see Fig. a-h).

A →translocation of a fragment of an artefact is a single-phase transformation for the initial object (disassembly and transport of fragments to another place) (see Fig. j-o). The second phase may appear in case of significant fragments (see Fig. i, p-s). In this case, →translocation opens a new primary life cycle for the 'fragmentary artefact'. The initial artefact (remaining parts located at the original emplacement) may continue its current life cycle (see Fig. A necessary condition for a →translocation is a material transfer of existing parts of the object from one place to another, for example, a reconstruction of an artefact in different place preceded by a destruction of the initial artefact is not a type of →translocation (cf. →move and swap). A →translocation may affect overground parts, as well as concealed elements, in an active or inactive state.

It may modify the state of an artefact or of its portion from an inactive state into an active state (see Fig. Translocated fragments moved to different emplacements, may be annexed by other artefacts (cf. →annexation) (see Fig. i ands), or exist as fragments.

We will not consider further evolution of fragments (i.e. only a disconnection of a fragment from the initial artefact will be shown) (see Fig. j-o).

The only exception from this rule is the case of a 'fragmentary artefact' (i.e. A translocation of a significant fragment of an artefact that gains individual existence but remains in terms of identity a part of initial artefact after being moved into a new location. In this case, parts of initial artefact remain at the original emplacement)(see Fig. p-s).

Do not confuse a →translocation with a →creation or with a →move_and_swap transformation. A necessary condition for this transformation is that the construction of the substitute should happen in the aftermath of the initial artefact's destruction.

A longer lapse of time disallow this transformation (expiration of a possibility of adoption of the identity by the new artefact).

In the case the move_and_swap transformation the initial artefact is destroyed to the extent that excludes a possibility of a →reincarnation in situ. An eminent →destruction is therefore a necessary condition for a →move_and_swap transformation to take place. Enclosure is the act of building a new artefact around another, in such a way that the initial object gets fully surrounded and separated from the outside world by the new artefact. The identity as well as structural integrity of the enclosed artefact remains intact.

We consider an artefact as enclosed, if its access (may it be by ground or by air) implies entering in another artefact.

<transformation>

Enclosure is a global transformation -it concerns an entire artefact and alters the way the artefact can be accessed but not the artefact itself. Enclosure does not result in a change of a cycle of life of the enclosed artefact. It is always an altering transformation.

This transformation may be a short-term event (see It is an independent transformation that can occur both in a primary (see Fig. Vestige are overground traces remaining in situ of an artefact that has been significantly altered, to the extent that it at some point entered into a state of • decay • hibernation, or • segmental anaesthesia. If remnants of the artefact have been at least partially recovered, preserved and maintained they will be called vestige. They are partial remains -often considerably degraded -of past structures.

We are talking about a • vestige exclusively in the case of overground inactive remains, which have no other function than relics of the past objects and have been intentionally preserved in this form. Often it coexists with underground, unexplored and inaccessible parts of the original object (cf. →segmental anaesthesia). A • vestige is by principle a roofless structure, even though it may be protected by a covering which, however, is not a part of the vestige itself, but is a separate, independent protective structure.

[state]

A •vestige is an inactive and overground state consisting of material fragments left from an artefact in situ.

  theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP

  Fig. a-d, f-i, earthquake Fig. e). An active and concealed artefact may enter into a •hibernation through a →modification (combined with cessation of functional activity). Yet these transformations do not always lead to a •hibernation. Entering into the state of hibernation may be a result of a short-term transformation (see Fig. a-e), or of a long-lasting transformation (see Fig. f-i). An artefact may come out of the state of hibernation only through the reincarnation transformation (see Fig. b, f-h) (cf. →reincarnation). It reappears then in a subsequent secondary cycle of life.

Like

  •hibernation, this state may emerge as a result of a short-term event (see Fig. a-c, h), or of a long-lasting process (see Fig. d-g, i).

  <glo> <ter> <open> <clos> <ind> <short> <last> _p_ _s_ _u_ _c_ Split is a formal division of an entire artefact into parts considered as unrelated to the original artefact.

  g, h -resulting objects re-united after some time), a →split acts also as a closing transformation(see Fig. a-f, i).

  →Split may be a short-term (see Fig.a-c, h, i) or a long-lasting transformation (see Fig.d-g).An artefact can split into portions that may be in an active(see Fig. a, d-h), or an inactive state (see Fig. b, c), containing overground (see Fig. a, c-f) or concealed portions (see Fig. b), in a uniform or a compound cycle of life.A →Merge combined with a →reincarnation constitute a reversing transformation for a →split (see Fig.g-h). In this case, an artefact may reappear in a secondary, uniform cycle of life.Do not confuse →split with →secession, or →translocation of a fragment of an artefact. <open> <ind> <short> <last> _p_ _s_ _u_ _c_ Secession is a process of formal division and separation of a portion from an artefact (A). This transformation usually initiates the →creation of an independent artefact (B), or artefacts(s).A portion (a') detached from an artefact (A) through a →secession, may be annexed (cf. →annexation by an artefact (C) in the moment of the secession, and therefore never appear as an independent artefact. <transformation> Secession is a partial transformation -it always affects a portion of an artefact. It is always an altering transformation, and with some exception of annexed portions, it is an opening transformation, as far as the portion is concerned. It modifies the original artefact inside one cycle of life (see Fig. a-i) and usually brings to life one or more new, independent objects.

  a-c) or a long-lasting process (see Fig. d-i). It may affect objects in any state: active (see Fig. a and d), inactive (see Fig. c, e), overground or concealed (see Fig. c), although it is more frequent for objects in an active and overground state. An →annexation may act as a transformation that reverses the result of a →secession. Do not confuse →secession with →split, or →translocation of a fragment of an artefact. (powstanie) <glob> <open> <ind> <res> <cor> <short> <last> _p_ _u_ _c_ Creation is the act of bringing an artefact into existence. <transformation> Creation is a global, opening transformation. It is a starting transformation in an evolution of an artefact. It initialises an artefact in its primal cycle of life. It may be an independent transformation (see Fig. a-c), or occur as a resulting transformation (e.g., →split, →secession (see Fig. d, e and g-i) or →merge (see Fig. f). In the second case, →creation results an identity given to the portion(s) separated from the original artefact.

  Fig. a, d, e, f and i) or a long-lasting process (see Fig. b, c, g and h).

  →Creation may result in bringing to existence an artefact in any state: active (see Fig. a-g), inactive (see Fig. e, h and i), overground or concealed, in a uniform (see Fig. a-d, and f-i) or a compound (see Fig. e) cycle of life.

<transformation>

  Abandon is a global and altering transformation. It affects always an entire artefact, transforming its state inside the current cycle of life -a primal cycle (see Fig. a-e, g-i) or a secondary one (see Fig. f).A result of abandon is always an inactive artefact in a uniform cycle of life. This transformation may be a short-term event(see Fig. a, b, d, f and g) or a longlasting process (seeFig. c, e, h and i).

  h).Do not confuse →abandon, or •abandonment with a →/•decay.

  Fig. a, b and h) or long-lasting process(see Fig. c-g and i).

A

  Fig. b, d and h).

  c) life cycle. An artefact may enter into a state of •decay without a →decay transformation (e.g., after a hurricane, during a war, etc. cf. →destruction) (see Fig. b, d and h).If all of its overground parts disappear, an artefact in •decay may enter into a •hibernation(see Fig. h) or be a subject of an •interment (see Fig.i).

  e

  ).

  theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP destruction démolition, zniszczenie <glo> <par> <alt> <ter> <trans> <ind> <short> <last> _p_ _s_ _u_ _c_ Destruction is a damaging incident the consequences of which are opposite to those of a construction. The damages brought on an artefact may be related to environmental causes or human activity. <transformation> A →destruction may be a partial, or a global transformation -it may concern an entire artefact or its portion. Its results vary from a fractional damage (see Fig. c, d-h) to a complete disappearance of overground parts (see Fig. a, b and i). It may therefore act as an altering transformation (the first case) or terminating and transmigrating transformation (the second case). It is an independent transformation. A →destruction may also affect concealed parts of objects (see Fig. a, d), but it never carries degradation effects to a point of total annihilation of an artefact (cf. →extinction), therefore it never acts as a closing transformation. Probably because of its damaging character and possible independence from human will and initiative, a →destruction may occur in any state of an artefact: active (see a, c, d-i), inactive (see Fig. a, b and d), concealed (see Fig. a and d), overground (see Fig. a-i)), and in any cycle of life: uniform (see Fig. a-h), compound (see Fig. d and i), primary (see Fig. a-f and h) or secondary one (see Fig. g and i)). Correspondingly, the results of →destruction may appear in each cycle of life and in every state. A →destruction may be a short-term event (see Fig. a-e), as well as a long-lasting process (see Fig. f-i). It may be a direct cause leading to a state of a •hibernation (see Fig. a, b and i), a •decay (see Fig. e and g), an •abandon (see Fig. h), etc. A transformation that may potentially reverse the results of a →destruction is a →modification (see Fig. ftheoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP extinction extinction, unicestwienie <glo> <clos> <ind> <short> <last> _p_ _s_ _u_ _c_ Extinction is an act of destruction that brings a global damage to an artefact. The result of an extinction is the total annihilation of the artefact. <transformation> An →extinction is a global transformation -it always implies an entire artefact, both its overground and concealed parts. It is a closing and an independent transformation. It marks definitively the end of the artefact's current cycle and of its whole evolution. An →extinction (like a →destruction) -may occur in any state of an artefact: active (see a, e, f-h), inactive (see Fig. b-d), concealed (see Fig. b, f-h), overground and in any cycle of life: uniform (see Fig. a-e, i), compound (see Fig. a-h), primary (see Fig. a, e, f, and h) or secondary one (see Fig. g)).

  <glo> <part> <term> <trans> <ind> <res> <short> <last> _s_ _u_ _c_ Reincarnation is an act of reappearance of an artefact in a new embodiment.An artefact may be considered as a "reincarnation" if and only if it reappears in an active state, after a period passed in an inactive and concealed state(see Fig. b-h) or after a phase of absence due to a dividing (e.g., →split) (see Fig.g) or a combining transformation (e.g., →merge) (see Fig.i).

  )(see Fig. b-h) or artefacts that disappeared and reappeared, due to an alternation of combining and dividing transformations (see Fig. a and i). In the first case, →reincarnation is an independent, terminating and transmigrating transformation. It may be a global (see Fig. a-f, h and i) or a partial transformation (see Fig. g).

  theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP modification modification, modyfikacja <glo> <part> <alt> <ind> <short> <last> _p_ _s_ _u_ _c_ Modification is an act of transforming an artefact, that results in its functional, structural or morphological alteration inside one cycle of life. Modification is in general caused by human activity (direct or indirect). It may include a partial demolition. <transformation> Modification is always an altering transformation (never a terminating or transmigrating one). It may occur in a primal and a secondary cycle of life, but it never acts as the trigger for a change of life cycle. It may be a global (see Fig. g, h) or a partial transformation (see Fig. a-e) -it may concern an entire artefact or its portion. A →modification may affect overground parts (see Fig. a-e, g and h), as well as concealed elements (see Fig. f and h), in an active (see Fig. a, b, d, e, g and h) or an inactive state (see Fig. c, f, h and i). It may be a decreasing transformation (i.e. alteration that results with a reduction of an artefact (see Fig. b and e)), an increasing transformation (e.g., an extension of an artefact (see Fig. a, d and g)) or a neutral alteration (e.g., preservation -an act of maintaining an element in a constant state (see Fig. c, f and h)).

  <trans> <ind> <short> <last> _p_ _u_ _c_ Merge is an act of combining different artefacts (A, B) or portions of artefacts into a union, that is considered as a completely new artefact (C).

  d and h), for artefact resulting from a →merge it is an opening transformation -it initialises a new artefact, starting a new primal cycle of life (see Fig. a-c and e-g). An artefact initialised by a →merge, may appear in a uniform cycle of life (see Fig. a c, e and f) or in a compound one (see Fig. b and g). A →merge may concern artefacts (or their portions) independently of their state: active (see Fig. a, b and d-g), inactive (see Fig. b, c, g and h), overground or concealed. It is a global and an independent transformation often associated with property changes. It may take the form of a short-term event (see Fig. a-d), as well as a long-lasting process (see Fig. e-h).

  <glo> <par> <clos>/<alt> <ind> <short> <last> _p_ _s_ _u_ _c_ Annexation is an act of combining and incorporating an entire artefact, or its portion (B) into another artefact (A), that we will call an annexing artefact. The annexed artefact (or a portion) (B) than becomes an integral part of the annexing artefact (A). Consequently, the cycle of life of an annexed element (B) comes to an end. The annexing artefact continues its life in a modified form inside its current cycle of life. <transformation> For an annexing artefact, an →annexation is always an altering transformationas it modifies the artefact inside its current cycle of life (see Fig. a-c and eh).

  see Fig. a, c, f-h) or a compound (see Fig. b and e) cycle of life, in an active (see Fig. a-c and e-h), an inactive (see Fig. b and e), an overground, or a concealed state. In the case of an annexed artefact, →annexation is a closing (but potentially reversible) transformation (see Fig. d, g and h). It may be a global or a partial transformation -affecting an entire artefact or only its portion. It may concern overground parts, as well as concealed elements, in an active or an inactive state, in both a uniform and a compound cycle of life. An →annexation may take the form of a short-term event (see Fig. a, b, f and h), as well as a long-lasting process (see Fig. c -e and g).

  <transformation> →Interment is a global transformation that may occur only when an artefact got reduced to its concealed parts. It may be a terminating and transmigrating (see Fig. a, c-f and h) or an altering (see Fig. b, g and i) transformation. This transformation may be a short-term event (see Fig. a-e, h and i), or a longlasting process (see Fig. f and g).

  i).Do not confuse an •interment with a •hibernation.<glo> <par> <alt> <ter> <trans> <ind> <short> <last> _p_ _u_ _c_

  p and s), enter into a secondary life cycle (e.g., →hibernation) (see Fig. r), or even disappear (cf. →split (see Fig. i), →extinction).

<transformation>A

  →translocation may be a global, or a partial transformation. Partial translocations alter initial object -altering t. (see Fig. j-s), while global translocations are terminating and transmigrating transformations (see Fig. a-h).

  d) and vice versa. It may also transform concealed portions into overground ones (see Fig. d). Translocated artefact may be therefore in an active (see Fig. a-d, h and i), an inactive (see Fig. e and f), an overground or a concealed state. Both phases of →translocation may take form of a short-term event (see Fig. a-c, h, i, j-l and n), as well as a long-lasting process (see Fig. d, e, g, m, o-s). theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP translocation translocation, przeniesienie <glo> <par> <alt> <ter> <trans> <ind> <short> <last> _p_ _u_ _c_ It is an independent and potentially auto-reversing transformation. After a global →translocation an artefact preserves its identity unless it is accompanied by parallel transformations like an →annexation (see Fig. g), a →merge (see Fig. h), or a →split (see Fig. i).

  an initial artefact (cf. →destruction) and replacing it with another one located in a different emplacement. The new version of the artefact functions as a substitute for the initial one and swaps its identity.

  <transformation> A →move_and_swap is a global transformation. It is always a terminating and transmigrating transformation -it marks the end of the current cycle of live and starts a new uniform, secondary cycle of life in a different emplacement. Therefore, the result of a →move_and_swap is always a new artefact in an active state. It is a resulting transformation. It always occurs after a preceding →destruction but the presence of a →destruction does not always entail a →move_and_swap. Move and swap transformation may be a short-term event (see Fig. a and b), as well as a long-lasting process (see Fig. c-f). Do not confuse a →move_and_swap with a →translocation in which an initial artefact is moved into a new emplacement. Do not confuse a →move and swap with a →creation. theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP

  Fig. a) or a long-lasting process (see Fig. b-f).

  b and d), or in a secondary (see Fig. a and c-f) life cycle of an object. An enclosed artefact may be an overground, or a concealed artefact in an active (see Fig. a-f) or an inactive state (see Fig. d). An →enclosure may appear in a uniform (see Fig. a-c) or a compound (see Fig. d-f) cycle of life. It is always an altering transformation. theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAPvestige

A

  transformation that leads to the state of vestige may be a global (see Fig. b), or a partial one (see Fig. a, c-f). It may have an altering (see Fig. a), or terminating and transmigrating character (see Fig. b-f). Only a →modification may lead to the state of vestige. The state of vestige may appear both in a primary (see Fig. b), or a secondary (see Fig. a, c-f) life cycle. It may appear in a uniform (see Fig. b) life cycle, but more frequently emerges within compound life cycles (see Fig. a, c-f). A •vestige may emerge as a result of a short-term transformation (see Fig. a-c), or a long-lasting transformation (see Fig. d-f). An artefact in a state of vestige may be enclosed by a new artefact built around it (cf. →enclosure) (see Fig. c, e and f). Do not confuse a •vestige with •decay. theoretical framework for the modelling and analysis of a heritage artefact's diachronic evolution. Extension of the model and of the corresponding visual formalism. I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP

properties of transformations <> transformation transformacja coverage étendue zasięg <glo> global globale

		<par>	partial partielle t. fragmentaryczna	A transformation that involves only a fragment of an artefact.
		<open>	opening ouvrante t. otwierająca	A transformation that marks the beginning of an artefact's evolution.
		<alt>	altering altérante t. modyfikująca	A transformation that modifies an artefact or its portion inside its current cycle of life.
	qualification qualification właściwości	<ter>	terminating terminant un cycle t. kończąca cykl	A transformation that marks the end of the current cycle of life.
		<clos>	closing terminale t. zamykająca
		<trans>	transmigrating transmigration t. otwierająca nowy cykl	A global transformation that marks the beginning of a new cycle of life inside the evolution of the artefact.
	duration czas trwania durée	<short>	short-term brève t. krótkotrwała

t. globalna A transformation that concerns an entire artefact (a core object and a segment if present).

A transformation that marks the end of the last cycle of life, and therefore the whole evolution of an artefact.

properties of states [] état stan activity status statut d'activité stan aktywności [act] active actif s. aktywny

		<last>	long-lasting longue t. długotrwała	A long-winded transformation. Its duration is longer than one chronon. A qualification of duration of a transformation depends on time granulation adopted in the analysis.
	dependence dépendance zależności	<ind> <cor> <res>	independent autonome t. niezależna corollary corollaire t. ściśle powiązana resulting résultante t. będąca skutkiem	A transformation that does not require any other preceding transformation to take place, although it may occur along with another transformation. A transformation that is a natural and unavoidable consequence of the preceding transformation. A transformation that may occur as a consequence of the preceding transformation. The occurrence of the resulting transformation is facultative and aleatory.

properties of life cycles _ _ cycle de vie cykl życiowy legacy succession następstwo _p_ primal cycle initial pierwotny cykl The initial, original cycle of life. red colour of the state bar _s_ secondary cycle cycle secondaire cykl wtórny Any succeeding, subsequent cycle of life (not the initial one).

	other notions
	ω	artefact artefact obiekt	An entire artefact or an ensemble considered as one basic entity. An artefact may be subdivided into portions (core object and segment(s)).
	α,φ	portion partie część		A subset of an artefact resulting from a conceptual division of the artefact into active and inactive parts.
	α	core object objet noyau część podstawowa	A portion of an artefact encompassing its active elements, may they be overground or underground structures.
	φ	segment segment segment		An inactive portion of an artefact, may it be overground or underground structure.
		functional activity activité fonctionnelle aktywność funkcjonalna	A condition in which an artefact performs its functional role.
				grey colour of the state bar for hibernation, orange for reincarnation, etc.
	complexity complexité stopień złożoności	_u_ _c_	uniform uniforme jednorodny cykl compound composé cykl złożony	A cycle of life in which an artefact is regarded as one undivided element. A cycle of life in which an artefact is regarded as composed from portions (a core object and segment(s)).

cf. O. Leszczak, Problem czasu w semiotyce: idiosynchronia -diachronia -panchronia. (The problem of time in semiotics: idiosynchrony -diachrony -panchrony, [in] The Peculiarity of Man, vol. 9, Warszawa-Kielce,

2003, pp. 301-330

Iwona Dudek, Jean-Yves Blaise. UNDERSTANDING CHANGES IN HERITAGE ARCHITECTURE: Can we provide tools & methods for visual reasoning?. IMAGAPP/IVAPP (International Conference on Information Visualization Theroy and Applications) 2010, May 2010, Angers, France. pp.91-100, ⟨10.978.989.674.027.6⟩. ⟨halshs-00564156⟩

I. Dudek, J.Y. Blaise | 2020 | UMR 3495 CNRS/MC MAP