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Christophe Jouis

Christophe Jouis
Université de la Sorbonne Nouvelle Paris 3 & EHESS & CAMS-CNRS · CAMS CNRS EHESS Sorbonne Universités

PhD (Mathématiques Appliquées aux Sciences Humaines) CAMS (CNRS/EHESS), etc.. CIFRE

About

102
Publications
68,859
Reads
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255
Citations
Introduction
- Information Sciences, - Mathematics for Human Sciences, - NLP & AI applied to information extraction from Big Textual Data, - Knowledge acquisition and representations, - Universal ontology that seems me to be impossible - Some philosophical questions, but I am not a specialist. ----- Many of my publications are not on researchgate... ------ Windows Insider : Windows Defender ; Malwarebytes Labs member ; ChromeBook Dev Member (Google)
Additional affiliations
January 2005 - August 2018
Sorbonne University
Position
  • Researcher
Description
  • Information Sciences, Mathematics for Human Sciences, ANR projects, supervision of DMKM (Data Mining & Knowledge Management) 2 masters internships, description logics, AnsProlog, systems for extracting terms and / or semantic relations from texts, OBVIL labex (digital humanities), graphic representation of ontologies (islands of memory) , management of atypical entities in ontologies, topology
January 2002 - December 2005
University of Quebec at Trois-Rivieres
Position
  • Research Associate
Description
  • Information Sciences, Mathematics for Human Sciences, Franco-Canadian cooperation: text analysis systems (statistical methods, supervised or unsupervised learning, ml, deep learning, methods by contextual exploration), algorithms, fuzzy logic, combinatory logic of Curry, lambda-calculus, Lisp, MATLAB, MAPLE, AutoDesk.
October 1993 - August 1994
University of Technology of Belfort-Montbéliard
Position
  • Professor (Assistant)
Description
  • Logics for computer science, prolog, software design methods, algorithms, C / C ++ language, followed by internships in computer science, unix system, operating systems, networks
Education
October 1989 - March 1993
School for Advanced Studies in the Social Sciences
Field of study
  • Computer Science for Digital Humanities, Computational Linguistics
September 1986 - July 1987
University of Paris-Sud
Field of study
  • Mathematics and Computer Science
October 1984 - July 1985
Sorbonne University
Field of study
  • Mathematics and Computer Science

Publications

Publications (102)
Presentation
Full-text available
Une stratégie pour la détection, l’extraction et la visualisation de données cibles AT : ILES, LISN (Laboratoire Interdisciplinaire des Sciences du Numérique), France, march 2021
Preprint
Full-text available
This paper explains how to obtain the number Φ, using a square with side length equal to a, the right triangle with sides a/2 and a, and a circle with radius equal to the hypotenuse of this right triangle. In particular, from a square whose side length is equal to a, we will show how to obtain a segment b in such a way that the value of a/b is the...
Preprint
Full-text available
This paper explains how to obtain the number Φ, using a square with side length equal to a, the right triangle with sides a/2 and a, and a circle with radius equal to the hypotenuse of this right triangle. In particular, from a square whose side length is equal to a, we will show how to obtain a segment b in such a way that the value of a/b is the...
Article
Full-text available
In this paper, we demonstrate the Collatz conjecture using the mathematical complete induction method. We show that this conjecture is satisfied for the first values of natural numbers, and in analyzing the sequence generated by odd numbers, we can deduce a formula for the general term of the Collatz sequence for any odd natural number n after seve...
Conference Paper
Full-text available
« La puissance d’une civilisation épouse toujours la puissance de la religion qui la légitime. Quand la religion se trouve dans une phase ascendante, la civilisation l’est également ; quand elle se trouve dans une phase descendante, la civilisation déchoit ; quand la religion meurt, la civilisation trépasse avec elle. (...) La civilisation judéo- c...
Preprint
Full-text available
La puissance d'une civilisation épouse toujours la puissance de la religion qui la légitime. Quand la religion se trouve dans une phase ascendante, la civilisation l'est également ; quand elle se trouve dans une phase descendante, la civilisation déchoit ; quand la religion meurt, la civilisation trépasse avec elle. (…) La civilisation judéo-chréti...
Preprint
Full-text available
In this paper we analyze the premise that Fermat numbers Fn = 2^(2^n) + 1 are not prime numbers for n ≥ 5. In particular, using Édouard Lucas' result, we initially show for n = 5 how one can write 2^(2^5) + 1 as something similar to a linear combination of certain powers of 2, such that one can write F5 as a product of two prime factors, written as...
Preprint
Full-text available
Here we analyze three well-known conjectures: (i) the existence of infinitely-many twin primes, (ii) Goldbach's strong conjecture, and (iii) Polignac's conjecture. We show that the three conjectures are related to each other. In particular, we see that in analysing the validity of the Goldbach's strong conjecture, one must consider also the existen...
Article
Full-text available
In this paper we perform a detailed analysis of Riemann’s hypothesis, dealing with the zeros of the analytically-extended zeta function. We use the functional equation ζ(s) = 2^s π^(s−1) sin(πs/2)Γ(1 − s)ζ(1 − s) for complex numbers s such that 0 < Re(s) < 1 and the reduction to the absurd method where we use an analytical study based on a complex...
Poster
Full-text available
1000 reads achieved with our preprint
Preprint
Full-text available
In this paper we perform a detailed analysis of Riemann's hypothesis, dealing with the zeros of the analytically-extended zeta function. We use the functional equation ζ(s) = 2^s π^(s−1)sin(πs/2)Γ(1 − s)ζ(1 − s) for complex numbers s such that 0 < Re(s) < 1, as well as reduction to the absurd in combination with a deep numerical analysis, to show t...
Conference Paper
Full-text available
This document discusses the ergonomic problems with currently available software products, and what in general is necessary to make an application pleasant to work with. The application of these principles to a new open-architecture user interface system, Views, is then described.
Poster
Full-text available
Certificate of acceptance for the manuscript (mathematics-1742201 by MDPI) in Mathematics (ISSN 2227-7390) on 05 June 2022
Preprint
In this paper, we demonstrate the Collatz conjecture using the mathematical complete induction method. We show that this conjecture is satisfied for the first values of natural numbers, and in analyzing the sequence generated by odd numbers, we can deduce a formula for the general term of the Collatz sequence for any odd natural number n after seve...
Article
Full-text available
This paper explains how to obtain the number Φ, using a square with side length equal to a, the right triangle with sides a/2 and a, and a circle with radius equal to the hypotenuse of this right triangle. In particular, from a square whose side length is equal to a, we will show how to obtain a segment b in such a way that the value of a/b is the...
Article
Full-text available
In this article, we will analyze how to obtain pertinent Information in the form of Qualitative Data graphically represented from unstructured Big Textual data. Unstructured data refers to information that either does not have a pre-defined data model or is not organized in a pre-defined manner (80-90% of all information). Obviously, it is not usef...
Presentation
Full-text available
It is a new presentation of EC3 software using quantum computer
Poster
Full-text available
In one day we have received this achievement, and reads follow increasing. Thank you very much to all the colleagues holding us. https://www.researchgate.net/publication/339799952_How_to_extract_knowledge_of_Qualit ative_Data_from_Big_Textual_Data
Preprint
Full-text available
In this chapter, we will analyze how to obtain pertinent Information in the form of Qualitative Data graphically represented from unstructured Big Tex-tual data. Unstructured data refers to information that either does not have a pre-defined data model or is not organized in a pre-defined manner (80-90% of all information). Obviously, it is not use...
Conference Paper
Full-text available
In structured indexes, classification systems, thesauri, conceptual structures or semantic networks, relationships are too often vague. For instance, in terminology, the relationships between concepts are often reduced to the distinction established by standard between hierarchical relationships (genus-species relationships and part/whole relations...
Research Proposal
Full-text available
This research work was born as a consequence of a thread of questions and answers on RG. And this first document has as its main objective, to present the work that we decided to start.
Conference Paper
Full-text available
Humanist ICTs in the IMCs
Conference Paper
Full-text available
Human Phase Intelligence Communication Cyberspahe: Human Communication in Computer Interface Design of Human Phase in the phical intellengence humanist
Conference Paper
Obviously, it is not useful to accumulate large amounts of information if we cannot find a particular piece of information. Also, extracting relevant and targeted information from textual data on large digital media, and if they are heterogeneous and multilingual, is certainly not a new problem. However, the current methods prove to be expensive an...
Data
The real Abstract in PDF.
Preprint
Full-text available
In this paper we show a demonstration of the Collatz conjecture using the mathematical complete induction method. We show that this conjecture is satisfied for the first values of natural numbers, and analyzing the sequence generated by the odd numbers, we can deduce a formula for the general term of Collatz sequence, for any $n$ odd natural number...
Article
Full-text available
We present a method called Contextual exploration that enable to focus on a particular point of view in Textual Big Data on Internet and social media. Our approach don't need big calculus such as frequency (recall, precision). It use only little "ontologies" called "linguistic ontologies" that express a part of the knowledge of the language in or...
Article
Full-text available
Le but est de décrire une stratégie de détection, d’extraction et de visualisation des données cibles (c’est-à-dire suivant un point de vue, cf. plus bas), développée dans le cadre du projet « Exploration Contextuelle (EC3) ». Les différents traitements visent des informations dans des textes hétérogènes, multilingues, éparpillés et qui ne sont pas...
Conference Paper
Full-text available
Unstructured data refers to information that either does not have a pre-defined data model or is not organized in a pre-defined manner. Many studies confirm that around 80-90% of all produced information is in unstructured form. So this kind of content, rich and most importantly too precious, must be integrated and taken into consideration for proc...
Conference Paper
Full-text available
Unstructured data refers to information that either does not have a pre-defined data model or is not organized in a pre-defined manner. Many studies confirm that around 80--90% of all produced information is in unstructured form. So this kind of content, rich and most importantly too precious, must be integrated and taken into consideration for pro...
Conference Paper
Full-text available
Multi-documents sheets are viewed as semantically structured representations of textual documents. The automatic construction of these sheets is based on the automatic annota-tion of textual documents according to a set of discursive categories called discursive mining viewpoints. The automatic annotation of a text is performed using the Contextual...
Article
Full-text available
The difference between typical instances and atypical instances in a natural categorization process has been introduced by E. Rosh and studied by cognitive psychology and AI. A lot of the knowledge representation systems are expressed in using fuzzy concepts but a degree of membership raises some problem for natural categorizations (especially to...
Article
Full-text available
Searching information in a huge amount of data can be a diffi-cult task. To support this task several strategies are used. Classification of data and labeling are two of these strategies. Used separately each of these strategies have certain limitations. Algorithms used to support the process of automated classification influence the result. In add...
Article
This article compares Defeasible Description Logics (DDL) and Topological Approach to reason on Ontologies with exceptions. DDL is integration between Description Logics and Defeasible Logics to deal with monotonic and non-monotonic parts of the knowledge bases respectively. Topological approach tries to reason on inconsistent knowledge bases using...
Article
Full-text available
This article compares Defeasible Description Logics (DDL) and Topological Approach to reason on Ontologies with exceptions. DDL is integration between Description Logics and Defeasible Logics to deal with monotonic and non-monotonic parts of the knowledge bases respectively. Topological approach tries to reason on inconsistent knowledge bases using...
Book
Full-text available
Recent technological progress in computer science, Web technologies, and the constantly evolving information available on the Internet has drastically changed the landscape of search and access to information. Current search engines employ advanced techniques involving machine learning, social networks, and semantic analysis. Next Generation Search...
Chapter
This chapter is a contribution to the study of formal ontologies. It addresses the problem of atypical entities in ontologies. The authors propose a new model of knowledge representation by combining ontologies and topology. In order to represent atypical entities in ontologies, the four topological operators of interior, exterior, border and closu...
Article
Full-text available
In computer science, ontology is a model of a domain in the form of classes and of relationships between these classes. Classes are organized in a graph the arrows of which are semantic relations. Ontology is static because the class hierarchy is fixed. In paleontology, systematic (i.e., the class hierarchies and the class relationships) is complic...
Chapter
Full-text available
This chapter is a contribution to the study of formal ontologies. It addresses the problem of atypical entities in ontologies. The authors propose a new model of knowledge representation by combining ontologies and topology. In order to represent atypical entities in ontologies, the four topological operators of interior, exterior, border and closu...
Article
Full-text available
This chapter is a contribution to the study of formal ontologies. It addresses the problem of atypical entities in ontologies. The authors propose a new model of knowledge representation by combining ontologies and topology. In order to represent atypical entities in ontologies, the four topological operators of interior, exterior, border and closu...
Chapter
Full-text available
Identical molecules could play different roles depending of the relations they may have with different partners embedded in different processes, at different time and/or localization. To address such intricate networks that account for the complexity of living systems, systems biology is an emerging field that aims at understanding such dynamic int...
Article
A main goal of recent studies in semantics is to integrate into conceptual structures the models of representation used in linguistics, logic, and/or artificial intelligence. A fundamental problem resides in the need to structure knowledge and then to check the validity of constructed representations. We propose associating logical properties with...
Article
Full-text available
In thesauri, conceptual structures or semantic networks, relationships are too often vague. For instance, in terminology, the relationships between concepts are often reduced to the distinction established by standard (ISO 704, 1987) and (ISO 1087, 1990) between hierarchical relationships (genus-species relationships and part/whole relationships) a...
Article
Full-text available
We propose to demonstrate that from the point of view of the information flow (analyze, diffusion and/or information retrieval), an organization cannot be described with one and only one exclusive thesaurus (or structured terminology with a simple link such as "synonym"). In fact, generally, any human being organization (firm, university, company,...
Chapter
A main goal of recent studies in semantics is to integrate into conceptual structures the models of representation used in linguistics, logic, and/or artificial intelligence. A fundamental problem resides in the need to structure knowledge and then to check the validity of constructed representations. We propose associating logical properties with...
Conference Paper
Full-text available
This paper describes an ongoing project evaluating Natural Language Processing (NLP) systems 1 . The aim of this project is to test software capabilities in automatic or semi−automatic extraction of terminology from French corpora in order to build tools used in NLP applications. We are putting forward a strategy based on qualitative evaluation. Th...
Article
Full-text available
Le secteur de l'information communication est un domaine très éclectique aux frontières encore mal définies. Les premiers enseignements universitaires dédiés à ce domaine datent du milieu des années 1970. Mais peut-on véritablement se former à la communication ? Autrement dit, le contenu des études en information communication permet-il de se procu...
Conference Paper
Full-text available
Computer-aided Knowledge extraction from extensive textual data is generally based on two methods, the statistical and the linguistic. These two methods were, till recently, considered by specialists as divergent. In this article we endeavor to show that they are rather complementary. If we focus on the two methods we can say that the first one ten...
Conference Paper
Full-text available
Pour l'analyse semi-automatique de documents textuels en grand nombre dans le but d’extraire des connaissances pertinentes, il existe deux méthodologies a priori divergentes: les méthodes numériques et les méthodes linguistiques. En fait, nous partons de l’idée que ces deux méthodes sont complémentaires. En effet, les premières permettent d’absorbe...
Thesis
We present a linguistic and computer model the aim of which is the understanding of linguistic items inserted in their context. This model is constituted by knowledge based systems of contextual exploration which consists in seeking linguistic clues in texts. It is shown that nothing else than a basic morpho-syntactical analysis and the use of the...

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