Maurice Tchoupe Tchendji

• Doctorat/PhD
• Professor (Associate) at University of Dschang

Data mining, particularly the analysis of multivariate time series data, plays a crucial role in extracting insights from complex systems and supporting informed decision-making across diverse domains. However, assessing the similarity of multivariate time series data presents several challenges, including dealing with large datasets, addressing te...

With the advent of the artifact-centric paradigm, the search for completely decentralized and less complex process execution techniques is regaining interest after the mitigated success of earlier techniques and the considerable reduction of research work in this area between 2006 and 2017. This paper presents a new framework for the completely dec...

Integrated Pest Management (IPM) technologies offer effective solutions to reduce the negative effects of crop pests while considering human and environmental health. However, disseminating these technologies faces several barriers, with one of the most significant being the lack of farmer awareness regarding their availability, deployment, and upt...

Information dissemination by publish/subscribe in Mobile Ad hoc NETworks (MANETs) has been the subject of numerous studies over the last few decades. There are generally two main classes in the taxonomy of publish/subscribe systems: the content-based publish/subscribe and the topic-based publish/subscribe. The latter generally offers a predefined s...

Éditeurs: Mathieu Roche, Nabil Gmati, Amel Ben Abda, Marcellin Nkenlifack Workflow languages are a key component of the Business Process Management (BPM) discipline: they are used to model business processes in order to facilitate their automatic management by means of BPM systems. There are numerous workflow languages addressing various issues (ex...

Soumission à Episciences Mobile ad-hoc social networks (MASNs) have been the subject of several research studies over the past two decades. They allow stations located in a small geographical area to be connected without the need for a network infrastructure and offer them the possibility to communicate any time anywhere. To communicate, stations r...

With the development of artifact-centric Business Process Management (BPM) models, the search for fully decentralized and less complex BPM techniques re-emerged in the last decade. In this context, the Language for the Specification of Administrative Workflow Processes (LSAWfP) and a fully decentralized execution model of its specifications have be...

Workflow languages play a key role in the discipline of Business Process Management (BPM): they allow business processes to be modelled in order to simplify their automatic management by means of BPM systems. Numerous workflow languages addressing various issues (expressiveness, formal analysis, etc.) have been proposed. In the last decade, some wo...

The integration of XML data sources which have different schemas/DTD can originate structural and vocabular heterogeneity. In this context, it is difficult to write satisfiable queries. As a solution, many Information Systems focus on building approximate evaluation techniques for exact queries. As a project, we build flexible and preference XML qu...

With the ever-increasing development of the Internet and the diversification of communication media, business processes of companies are increasingly collaborative and distributed. This contrasts with traditional solutions deployed for their management which are usually centralized, based either on the control and coordination of the flow of activi...

In Business Process Management, the decentralized execution of business processes is one of the main research topics. Several models for processes’ modelling in order to facilitate their execution, have been proposed. LSAWfP is among the most recent in this area: it helps to specify administrative processes with grammatical models indicating, in ad...

During the last two decades, the decentralized execution of business processes has been one of the main research topics in Business Process Management. Several models (languages) for processes' specification in order to facilitate their distributed execution, have been proposed. LSAWfP is among the most recent in this area: it helps to specify admi...

In Business Process Management (BPM), process modelling has been solved in various ways. However, there are no commonly accepted modelling tools (languages). Some of them are criticized for their inability to capture both the lifecycle, informational and organizational models of processes. For some others, process modelling is generally done using...

In Business Process Management (BPM), process modelling has been solved in various ways. However, there are no commonly accepted modelling tools (languages). Some of them are criticized for their inability to capture both the lifecycle, informational and organizational models of processes. For some others, process modelling is generally done using...

Process modelling is a crucial phase of Business Process Management (BPM). Despite the many efforts made in producing process modelling tools, existing tools (languages) are not commonly accepted. They are mainly criticised for their inability to specify both the tasks making up the processes and their scheduling (their lifecycle models), the data...

With the ever-increasing development of the Internet and the diversification of communication media, there is a growing interest in distributed business process models that focus on exchanged data (or artifact) to control and pilot processes. The Guarded Attribute Grammars (GAG) is one such model; it stands out from the others by the fact that it e...

Administrative workflows refer to variable business processes in which all cases are known; tasks are predictable and their sequencing rules are simple and clearly defined. When such processes are collaboratively executed by several actors, it may be desirable, for security reasons (confidentiality), that each of them has at all times, only a parti...

Administrative workflows refer to variable business processes in which all cases are known; tasks are predictable and their sequencing rules are simple and clearly defined. When such processes are collaboratively executed by several actors, it may be desirable, for security reasons (confidentiality), that each of them has at all times, only a parti...

In an asynchronous cooperative editing workflow of a structured document, each of the co-authors receives in the different phases of the editing process, a copy of the document to insert its contribution. For confidentiality reasons, this copy may be only a partial replica containing only parts of the (global) document which are of demonstrated int...

Process modelling is a crucial phase of Business Process Management (BPM). Despite the many efforts made in producing process modelling tools, existing tools (languages) are not commonly accepted. They are mainly criticised for their inability to specify both the tasks making up the processes and their scheduling (their lifecycle models), the data...

The use of social networks is still confined to infrastructure-based networks such as the Internet. However, many situations (conferences, fairs, etc.) may require the implementation and rapid deployment of an ad-hoc application for disseminating information: we call this type of application, Ad-hoc Social Network. These applications are necessaril...

The use of social networks is still confined to infrastructure-based networks such as the Internet. However, many situations (conferences, fairs, etc.) may require the implementation and rapid deployment of an ad-hoc application for disseminating information: we call this type of application, Ad-hoc Social Network. These applications are necessaril...

Administrative workflows refer to variable business processes in which all cases are known; tasks are predictable and their sequencing rules are simple and clearly defined. When such processes are collaboratively executed by several actors, it may be desirable, for security reasons (confidentiality), that each of them has at all times, only a parti...

An exact query is a query in which the user specifies precisely what to retrieve from a database (XML or relational database). For these queries only data that strictly respect all user’s conditions is returned. XML documents are generally semi-structured. Due to the non-existence or lack of knowledge of the model of the document being queried, whe...

In this manuscript, we are interested in the specification and decentralized execution of administrative workflows. We present a grammatical model to specify such processes by indicating, in addition to their fundamental elements, the permissions (reading, writing and execution) of each actor in relation to each of the tasks that compose them. We t...

The popularization of mobile equipment capable of communicating autonomously nowadays offers the possibility of thinking more seriously about a mode of communication in which stakeholders communicate in an ad-hoc manner and use mobility to convey information. However, due to their mobile nature, such equipments are limited by their low energy and s...

In the XML community, exact queries allow users to specify exactly what they want to check and/or retrieve in an XML document. When they are applied to a semi-structured document or to a document with an overly complex model, the lack or the ignorance of the explicit document model (DTD-Document Type Definition, Schema, etc.) increases the risk of...

With the emergence of XML as de facto format for storing and exchanging information over the Internet, the search for ever more innovative and effective techniques for their querying is a major and current concern of the XML database community. Several studies carried out to help solve this problem are mostly oriented towards the evaluation of so-c...

Nowadays, electronic documents are widely used as media of exchange between actors involved in a given business process. Generally, their contents provide information on both what has already been done on this procedure and what remains to be done and by whom it should be done. Badouel and Tchoupé proposed a modelling of the life cycle of such docu...

Le concept de requêtes bipolaires (on parle aussi de requêtes avec préférences) a émergé dans la communauté des Bases de Données Relationnelles, pour permettre aux utilisateurs d'obtenir des réponses beaucoup plus pertinentes à leurs préoccupations, exprimées via des requêtes dites avec préférences. De telles requêtes ont généralement deux parties...

In an asynchronous cooperative editing workflow of a structured document, each of the co-authors receives in the different phases of the editing process, a copy of the document to insert its contribution. For confidentiality reasons, this copy may be only a partial replica containing only parts of the (global) document which are of demonstrated int...

Complex structured documents can be intentionally represented as a tree structure decorated with attributes. Ignoring attributes (these are related to semantic aspects that can be treated separately from purely structural aspects which interest us here), in the context of a cooperative edition, legal structures are characterized by a document model...

Dans un workflow d’édition coopérative asynchrone d’un document structuré, chacun des co-auteurs reçoit dans les différentes phases du processus d’édition une copie du document pour y insérer sa contribution. Pour des raisons de confidentialité, cette copie peut n’être qu’une réplique partielle ne contenant que les parties du document (global) qui...

The concept of preferences queries emerged in the Relational Databases community, allowing users to get much more relevant responses to their concerns, expressed via requests say with preferences. Such requests usually have two parts: the first is used to express the strict constraints and the second, preferences or wishes. Any response to a query...

Une requête exacte sur un document XML est une requête dans laquelle l'utilisateur spécifie précisément ce qu'il désire vérifier ou retrouver dans le document. Les documents XML sont généralement semi-structurés. Quand on leur applique des requêtes exactes, le risque est grand d'obtenir un résultat vide (cas des requêtes trop spécifiques) ou trop i...

Complex structured document is intentionally represented as a tree structure decorated with attributes. The legal structures are characterized by a document model (an abstract grammar). Ignoring attributes (these are related to semantic aspects that can be treated separately from purely structural aspects that concern us here), in the context of a...

International audience The cross-fertilization is a technique to pool expertise and resources of at least two sectors in order to make the best of each. In this paper, we present a protocol of programming based on cross-fertilization of two programming languages (Haskell and Java) under two different programming paradigms: the functional paradigm a...

The cross-fertilization is a technique to pool expertise and resources of at least two sectors in order to make the best of each. In this paper, we present a protocol of programming based on cross-fertilization of two programming languages (Haskell and Java) under two different programming paradigms: the functional paradigm and the object paradigm....

Un document structuré complexe est représenté intentionnellement sous la forme d’une structure arborescente décorée par des attributs. Si on ne s’intéresse qu’aux aspects purement structurels, les documents licites peuvent être caractérisés par une grammaire algébrique abstraite. Dans cette thèse,après avoir montré comment l’édition coopérative de...

International audience A complex structured document is intentionnally represented as a tree decorated with attributes. The set of legal structures is given by an abstract context-free grammar. We forget about the attributes; they are related with semantical issues that can be treated independently of the purely structural aspects that we address i...

We consider the manipulation of hierarchically-structured documents within a complex workflow system. Such a system may consist of several subsystems distributed over a computer network. These subsystems can concurrently update partial views of the document. At some points in time we need to reconcile the various local updates by merging the partia...

A complex structured document is intentionnally represented as a tree decorated with attributes. The set of legal structures are given by an abstract context-free grammar. We forget about the attributes, they are related with semantical issues that can be treated independently of the purely structural aspects that we address in this paper. That int...