01/07/2020

Analysis of dialogues in psychosis or severe mental illness

This job offer has expired


  • ORGANISATION/COMPANY
    Université de Lorraine
  • RESEARCH FIELD
    Computer scienceModelling tools
    Computer scienceProgramming
    Language sciencesLinguistics
    Psychological sciencesPsychology
  • RESEARCHER PROFILE
    Recognised Researcher (R2)
    Established Researcher (R3)
  • APPLICATION DEADLINE
    31/08/2020 23:00 - Europe/Brussels
  • LOCATION
    France › Vandoeuvre-lès-Nancy Cedex
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    37.5

OFFER DESCRIPTION

One postdoc position (1 year) is open in the Semagramme team at LORIA and at ATILF. The position will be in Natural Language Processing / Machine Learning or Psychology and linguistic.

It will be funded by the project OLKi (Open Language and Knowledge for Citizens) from Université de Lorraine.

Information

— Starting date : fall 2020

— Duration : 1 year

— The call is open while the position is available

— Location : Nancy 1, France

— Salary : around 2,000 euros per month net income

— Application : CV, motivation letter, PhD evaluation, master TOR and support letter(s) to maxime.amblard@univ-lorraine.fr

Supervisors

— Maxime Amblard, MCF HDR Univ. de Lorraine, Loria UMR 7503 - Team Sémagramme, maxime.amblard@univ-lorraine.fr

— Chloé Braud, CR CNRS, Irit UMR 5505 - Team Melodi, chloe.braud@irit.fr

— Michel Musiol, Pr Univ. de Lorraine, ATILF UMR 7118 - Team Discours, michel.musiol@univ-lorraine.fr

Scientific environment

The project is part of an interdisciplinary work. It is integrated into the INRIA Exploratory Action ODiM project on the formal modeling of interviews of patients with schizophrenia. ODiM is an interdisciplinary project, at the interface of psychiatry-psychopathology, linguistics, formal semantics and digital sciences. It tends to replace the paradigm of Language and Thought Disorders (LTD) as used in the Mental Health sector with a semantic-formal and cognitive model of Discourse Disorders (DD). These disorders are translated into pathognomonic signs, making them complementary diagnostic tools as well as screening for vulnerable people before the psychosis’s trigger.
The project has three main components.
The work is based on real data from interviews with patients with schizophrenia. A data collection phase in partner hospitals and with a control group, consisting of interviews and neuropsychological and cognitive tests, is therefore necessary.
The data collection will allow the development of the theoretical model, both in psycholinguistic and semantic-formal formalization for the identification of diagnostic signs. The success of such a project requires the extension of the analysis methodology in order to increase the model’s ability to identify sequences with symptomatic discontinuities.
If the general objective of the project is to propose a methodological framework for defining and understanding diagnostic clues associated with psychosis, we also wish to equip these approaches by developing software to automatically identify these clues, both in terms of discourse and language behaviour.

Keywords

NLP, Discourse and Dialogue, Machine Learning, Logic, Corpora, Natural Language, Pathology, Schizophrenia, Psychology

Scientific project

Modeling interaction is a crucial step for Natural Language Processing (NLP), which requires the development of automatic tools able to simulate these exchanges. A typical example is chatbots and all the services based on them. But Dialogue Models face two types of difficulties.

(I) The first issue concerns the availability of resources and models that can analyze and process dialogues. Modelling dialogues is very hard, in particular because conversations highlight particular uses such as the relationship between questions and answers.
Another perspective is to use Machine Learning approaches in order to identify dialogical relations and dialogical interactions. Generally speaking discursive analysis aims at building a structure representing the semantic links between sentences.

(II) The second is that dialogue models must be coordinated with pragmatic inferences at a higher level. In this case, we can refer to linguistic models of dialogue such as [6], or to models that capture conceptual links, such as in TTR. [4]. While speech models provide important information, dialogue makes it possible to share information in a more sophisticated way. The solution must take into account the background of all speakers, as well as how they have common ground.

The project has different perspectives that explain the two possible profiles for this position.
For the first possible profile, the applicant should have the highest level on the developments of natural language dialogue analysis. In particular we focus on natural interactions and not chat logs. Dialogue parsing has undergone developments in recent years that may allow an automatic analysis of our data.
The second possibility is to analyse these interviews with a psychological angle. Dialogical interactions with people suffering from schizophrenia contain incongruities that can lead to the loss of understanding between the speakers. We wish to develop a semantic and pragmatic model. The aim is to define the linguistic specificities of these interactions in order to have them implemented in the tool we are developing.

Supervisors

Maxime Amblard, MCF HDR, is a specialist in computational linguistics. He is interested in the use of logical and formal tools to model the semantics and pragmatics of natural language. His recent research focuses on a corpus of pathological uses of the language and dialogue’s representation. http://members.loria.fr/mamblard/

Chloé Braud, CR CNRS, is a computer linguist specializing in discourse parsing. The strategies she implements are based on machine learning for domain adaptation tasks in a multilingual, cross-domain context. https://chloebt.github.io/

Michel Musiol, PR is a psycholinguist. He is interested in the analysis of the manifestation of thought disorders through language. He studied the particularities of interviews with schizophrenic patients. http://michel.musiol.free.fr/

The skills of the different supervisors are complementary for the subject, both on the formal, digital and psycholinguistic aspects.

Bibliography

[1] Afantenos, Stergos and Kow, Eric and Asher, Nicholas and Perret, Jérémy (2015). Discourse parsing for multi-party chat dialogues, Proceedings of ACL.

[2] Asher, N and Lascarides, A and Lemon, O and Guhe, M and Rieser, V and Muller, P and Afantenos, S and Benamara, F and Vieu, L and Denis, P (2012). Modelling strategic conversation : The STAC project, Proceedings of the Workshop on the Semantics and Pragmatics of Dialogue.

[3] Church, A. (1940). A formulation of the simple theory of types. Journal of Symbolic Logic, 5 :56–68.

[4] Cooper, R., & Ginzburg, J. (2015). TTR for Natural Language Semantics 2.

[5] de Groote, P. (2006). Towards a Montagovian account of dynamics. In M. Gibson and J. Howell, editors, Proceedings of Semantics and Linguistic Theory XVI. Cornell University, Ithaca, NY.

[6] Ginzburg, J. (2016). Semantics of dialogue. In M. Aloni & P. Dekker (Eds.), The Cambridge Handbook of Formal Semantics. Cambridge University Press.

[7] Harris, Z. S. (1954). Distributional structure. Word, 10(2-3), 146-162.

[8] Kamp, H. and U. Reyle (1993). From Discourse to Logic. Kluwer Academic Publishers, Dordrecht.

[9] van Eijck, J. and H. Kamp (1997). Representing Discourse in Context. In J. van Benthem and A. ter Meulen (eds.), Handbook of Logic and Language. Elsevier.

[10] Rebuschi, M., Amblard, M. & Musiol, M. (2014). Using SDRT to analyze pathological conversations. Logicality, rationality and pragmatic deviances. In M. Rebuschi et al. (Eds). Interdisciplinary Works in Logic, Epistemology, Psychology and Linguistics. (Dialogue, Rationality, and Formalism). Springer Cham Heidelberg New York, Ch 15, 345-371.

[11] Shi, Zhouxing and Huang, Minlie (2018). A Deep Sequential Model for Discourse Parsing on Multi-Party Dialogues, arXiv preprint arXiv :1812.00176.

[12] Xue, Nianwen and Ng, Hwee Tou and Pradhan, Sameer and Rutherford, Attapol and Webber, Bonnie and Wang, Chuan and Wang, Hongmin (2016). Conll 2016 shared task on multilingual shallow discourse parsing, Proceedings of the CoNLL-16 shared task.

More Information

Benefits

Employees are covered for sickness, maternity, paternity and family benefits under the compulsory general scheme.

Office canteen on site.

Selection process

Application : CV, motivation letter, PhD evaluation, master TOR and support letter(s) to maxime.amblard@univ-lorraine.fr

The call is open while the position is available

Web site for additional job details

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Computer science: PhD or equivalent
    Language sciences: PhD or equivalent
    Psychological sciences: PhD or equivalent
  • REQUIRED LANGUAGES
    ENGLISH: Excellent

Skills/Qualifications

The post-doctoral fellow must have either a PhD in Computational Linguistics/NLP, Computer Science or related fields, with good programming skills, OR in Psychology.

He/She must be fluent in English and have demonstrated its ability to publish at the highest international level.

Note that Knowledge of French is NOT required.

Supervision of students is possible, if wanted.

Work location(s)
1 position(s) available at
LORIA
France
Vandoeuvre-lès-Nancy Cedex
54506
Campus scientifique

EURAXESS offer ID: 538050

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