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Address and personal information

Gilbert Ritschard, Professor Emeritus (Professeur honoraire) Institute of Demography and Socioeconomics (IDESO) e-mail: Gilbert.Ritschard [at] unige.ch Short biographical notice CV and list of publications (pdf) Google scholar Orcid orcid.org/0000-0001-7776-0903 ResearchGate

• Sequence Analysis Association (SAA)
• The International Conference on Sequence Analysis and Related Methods, (LaCOSA II), Lausanne, June 8-10, 2016.

Research projects

• The TraMineR project.
• Measuring Vulnerability, Methodological project of NCCR LIVES -- Overcoming vulnerabilities: life course perspectives.

Some Recent Publications

• Ritschard, G.., T.F. Liao, E. Struffolino (2023), Strategies for Multidomain Sequence Analysis in Social Research, Sociological Methodology, 53(2), 288-322. doi: 10.1177/00811750231163833.
• Ritschard, G. (2023), Measuring the nature of individual sequences, Sociological Methods and Research, 52(4), 2016-2049. doi: 10.1177/00491241211036156. (first published online Sep 2021)
• Oris, M., O. Perroux, G. Ryczkowska, R. Schumacher, A. Remund, and G. Ritschard (2023), Geneva: An Urban Sociodemographic Database, Historical Life Course Studies, 13(5), 212-227, doi: 10.51964/hlcs15621.


• Liao, T.F., D. Bolano, C. Brzinsky-Fay, B. Cornwell, A. E. Fasang, S. Helske, R. Piccarreta, M. Raab, G. Ritschard, E. Struffolino, M. Studer (2022), Sequence analysis: Its past, present, and future, Social Science Research, 107, 102772. doi: 10.1016/j.ssresearch.2022.102772, Science Direct link.


• Häfeli, K., Hättich, A., Schellenberg, C., Krauss, A., and G. Ritschard (2021), Stability and mobility in occupational career patterns over 36 years in Swiss women and men, Longitudinal and Life Course Studies, 12(4), 469-494. doi: 10.1332/175795921X16137663687028. Preprint (pdf).


• Orsholits, D., M. Studer, and G. Ritschard (2019), The great recession and trajectories of vulnerability to unemployment in the UK and Switzerland, LIVES Working Papers, 79. NCCR LIVES. doi: 10.12682/lives.2296-1658.2019.79.


• Ritschard, G., M. Bussi, and J. O'Reilly (2018), An Index of Precarity for Measuring Early Employment Insecurity, In G. Ritschard and M. Studer (eds): Sequence Analysis and Related Approaches: Innovative Methods and Applications, Cham: Springer, pp 279-295. doi: 10.1007/978-3-319-95420-2_16.
• Ritschard, G., and M. Studer (2018), Sequence Analysis: Where Are We, Where Are We Going?, In G. Ritschard and M. Studer (eds): Sequence Analysis and Related Approaches: Innovative Methods and Applications, Cham: Springer, pp 1-11. doi: 10.1007/978-3-319-95420-2_1.
• Ritschard, G., and M. Studer (eds) (2018), Sequence Analysis and Related Approaches: Innovative Methods and Applications, Series: Life course research ans Social Policies, Vol. 10, Cham: Springer. doi: 10.1007/978-3-319-95420-2.
• Zhelyazkova, N., and G. Ritschard (2018), Parental Leave Take-Up of Fathers in Luxembourg, Population Research and Policy Review, 37(5), 769-793. doi: 10.1007/s11113-018-9470-8. Springer Nature shredIt.


• Zhelyazkova, N., and G. Ritschard (2017), Parental leave within the broader employment trajectory: what can we learn from administrative records?, Equality, Diversity and Inclusion: An International Journal, 36(7), 607-627 doi: 10.1108/EDI-05-2017-0109.
• Bürgin, R., and G. Ritschard (2017), Coefficient-Wise Tree-Based Varying Coefficient Regression with vcrpart, Journal of Statistical software, 80(6), 1-33, doi: 10.18637/jss.v080.i06.
• Bürgin, R., R. Schumacher, and G. Ritschard (2017), Changes in the Order of Family Life Events in 20th-Century Europe: A Cross-Regional Perspective, Historical Life Course Studies, 4, 41-58, doi: 10.51964/hlcs9338.
• Oris, M., R. Gabriel, G. Ritschard, and M. Kliegel (2017), Long Lives and Old Age Poverty: Social Stratification and Life-Course Institutionalization in Switzerland, Research in Human Development, 14(1), 68-87, doi: 10.1080/15427609.2016.1268890.


• Gabadinho, A. and G. Ritschard (2016), Analyzing State Sequences with Probabilistic Suffix Trees: The PST R Package, Journal of Statistical Software, 72(3), 1-39, doi: 10.18637/jss.v072.i03.
• Ritschard, G. and M. Studer (eds), (2016), Proceedings of the International Conference on Sequence Analysis and Related Methods, LaCOSA II, Lausanne, June 8-10, 2016, online proceedings, 910p.
• Bolano, D., A. Berchtold, and G. Ritschard (2016), A discussion on Hidden Markov Models for Life Course Data, in G. Ritschard and M. Studer (eds) Proceedings of the International Conference on Sequence Analysis and Related Methods, LaCOSA II, Lausanne, June 8-10, 2016, pp 241-260 pdf.
• Studer, M. and G. Ritschard (2016), What matters in differences between life trajectories: A comparative review of sequence dissimilarity measures, Journal of the Royal Statistical Society, Series A. Vol. 179(2), 481-511, doi: 10.1111/rssa.12125.


• Bürgin, R. and G. Ritschard (2015), Tree-based varying coefficient regression for longitudinal ordinal responses, Computational Statistics & Data Analysis. Vol. 86, 65-80, doi: 10.1016/j.csda.2015.01.003.


• Bürgin, R. and G. Ritschard (2014), A decorated parallel coordinate plot for categorical longitudinal data, The American Statistician. Vol. 68(2), 98-103, doi: 10.1080/00031305.2014.887591, Preprint (pdf).
• Studer, M. and G. Ritschard (2014), A Comparative Review of Sequence Dissimilarity Measures, LIVES Working Papers, 33. NCCR LIVES. doi: 10.12682/lives.2296-1658.2014.33, (pdf).
• Oris, M. and G. Ritschard (2014), Sequence Analysis and Transition to Adulthood: An Exploration of the Access to Reproduction in Nineteenth-Century East Belgium, in Ph. Blanchard, F. Bühlmann and J.-A. Gauthiers (eds) Advances in Sequence Analysis: Theory, Methods, Applications. Series: Life Course Research and social Policies, Vol. 2. Berlin: Springer-Verlag. pp 151-167. doi: 10.1007/978-3-319-04969-4_8. Preprint (pdf).


• Bürgin, R. and G. Ritschard (2013), Rendering the order of life events, LIVES Working Papers, 29. NCCR LIVES. doi: 10.12682/lives.2296-1658.2013.29.
• Gabadinho, A. and G. Ritschard (2013), Searching for typical life trajectories applied to childbirth histories, in R. Levy and E. Widmer (eds), Gendered life courses - Between individualization and standardization. A European approach applied to Switzerland, Vienna-Lit. Pages 287-312. Preprint (pdf).
• McArdle, J. J. and G. Ritschard (eds) (2013) Contemporary Issues in Exploratory Data Mining in the Behavioral Sciences, Series: Quantitative Methodology Series . New York: Routledge. doi: 10.4324/9780203403020.
• Ritschard, G. (2013), CHAID and Earlier Supervised Tree Methods, in J.J. McArdle and G. Ritschard (eds), Contemporary Issues in Exploratory Data Mining in the Behavioral Sciences, Quantitative Methodology Series , New York: Routledge, pages 48-74. Preprint (pdf).
• Ritschard, G., F. B. Losa and P. Origoni (2013), Validating Tree Descriptions of Women's Labor Participation with Deviance-based Criteria, in J.J. McArdle and G. Ritschard (eds), Contemporary Issues in Exploratory Data Mining in the Behavioral Sciences, Quantitative Methodology Series , New York: Routledge, pages 128-149. Preprint (pdf).
• Widmer , E. D. et G. Ritschard (2013), Tous égaux devant la pluralisation des parcours de vie ? Déstandardisation des trajectoires familiales et professionnelles et insertions sociales, in S. Gaudet, N. Burlone, et M. Lévesque (eds), Repenser la famille et ses transitions, repenser les politiques publiques, Québec, CAN: Les Presses de l'Université Laval, pages 79-109. Preprint (pdf).
• Ritschard, G., R. Bürgin and M. Studer (2013), Exploratory Mining of Life Event Histories, in J.J. McArdle and G. Ritschard (eds), Contemporary Issues in Exploratory Data Mining in the Behavioral Sciences, Quantitative Methodology Series , New York: Routledge, pages 221-253. Preprint (pdf).


• Ritschard, G. (2012), Exploring sequential data, in Ganascia, J.-G., Lenca, Ph. and Petit, J.-M. (eds) Discovery Science, 15th International Conference, DS 2012, Lyon, France, October 29-31, 2012, Series: Lecture Notes in computer Science (LNCS), Vol. 7569, Berlin: Springer-Verlag, pp. 3-6. doi: 10.1007/978-3-642-33492-4_3. Preprint (pdf).
• Losa, F. B., M. Bigotta, E. Stephani and G. Ritschard (2012), Da Dove Veniamo? Che Siamo? Dove Andiamo? Analisi delle trajectorie di vitta dei disoccupati di lungfa durata in Svizzera, Ufficio di Statistica, Giubascio TI. (info).
• Losa, F. B., M. Bigotta, E. Stephani and G. Ritschard (2012), Trajectoires des chômeurs de longue durée en Suisse - Une analyse de données AVS/AI, Sécurité Sociale CHSS, 4, pp. 224-228. (pdf).
• Guillet, F., G. Ritschard and D.A. Zighed (eds) (2012) Advances in Knowledge Discovery and Management: Volume 2, Series: Studies in Computational Intelligence, Vol. 398, Berlin: Springer. doi: 10.1007/978-3-642-25838-1.


• Studer, M., G. Ritschard, A. Gabadinho and N.S. Müller (2011), Discrepancy analysis of state sequences,Sociological Methods and Research, 40(3), pp. 471-510. doi: 10.1177/0049124111415372. Preprint (pdf).
• Bigotta, M., F. B. Losa, G. Ritschard et E. Stephani (2011), Le parcours professionnel des chômeurs de longue durée en Suisse, La Vie économique, 7/8, pp. 51-54. (Online version).
• Gabadinho, A., G. Ritschard, N.S. Müller and M. Studer (2011), Analyzing and visualizing state sequences in R with TraMineR, Journal of Statistical Software, 40(4), pp. 1-37. Freely available from http://www.jstatsoft.org/v40/i04/. Vignette (pdf)
• Gabadinho, A., G. Ritschard, M. Studer and N.S. Müller (2011), Extracting and Rendering Representative Sequences, In Fred, A., Dietz, J.L.G., Liu, K. & Filipe, J. (eds) Knowledge Discovery, Knowledge Engineering and Knowledge Management., Series: Communications in Computer and Information Science (CCIS), Vol. 128, Berlin: Springer-Verlag. pp. 94-106. doi: 10.1007/978-3-642-19032-2_7. Preprint (pdf).


• Oris, M., G. Ritschard and O. Perroux (2010), Growing religious pluralism in early nineteenth-century Geneva: new methods for revealing hidden structures and dynamics from censuses, Popolazione e Storia, 11/2, pp. 43-58. doi: 10.4424/ps2010-10, preprint (pdf).
• Dribe, M., M. Manfredini, M. Oris and G. Ritschard (2010), Pathways to Reproduction in Pre-transitional Europe: A Sequential Approach, SSHA 10, Conference of the Social Science History Association, Chicago, November 18-21, manuscript (pdf) 30p.
• Ritschard, G. (2010), CHAID and Earlier supervised Tree Methods, Cahiers du Département d'économétrie, no 2010.02, 28 pages. (pdf).
• Guillet, F., G. Ritschard, D.A. Zighed and H. Briand (eds) (2010) Advances in Knowledge Discovery and Management, Series: Studies in Computational Intelligence, Vol. 292, Berlin: Springer. doi: 10.1007/978-3-642-00580-0.
• Studer, M., G. Ritschard, A. Gabadinho and N.S. Müller (2010), Discrepancy analysis of complex objects using dissimilarities in F. Guillet et al. (eds) Advances in Knowledge Discovery and Management, Series: Studies in Computational Intelligence, Vol. 292, Berlin: Springer. pp. 3-19. doi: 10.1007/978-3-642-00580-0_1. Preprint (pdf).
• Gabadinho, A., G. Ritschard, M. Studer et N.S. Müller, (2010), Indice de complexité pour le tri et la comparaison de séquences catégorielles, Revue des Nouvelles Technologies de l'Information, Vol. E-19, EGC 2010, pp. 61-66. Preprint (pdf).
• Müller, N.S., M. Studer, G. Ritschard et A. Gabadinho (2010), Extraction de règles d'association séquentielle à l'aide de modèles semi-paramétriques à risques proportionnels, Revue des Nouvelles Technologies de l'Information, Vol. E-19, EGC 2010, pp. 25-36. Preprint (pdf).
• Müller, N.S., M. Studer, A. Gabadinho et G. Ritschard (2010), Analyse de séquences d'événements avec TraMineR, Revue des Nouvelles Technologies de l'Information, Vol. E-19, EGC 2010, pp. 639-640. Preprint (pdf).
• Studer, M., N.S. Müller, N.S., G. Ritschard et A. Gabadinho (2010), Classer, discriminer et visualiser des séquences d'événements, Revue des Nouvelles Technologies de l'Information, Vol. E-19, EGC 2010, pp. 37-48. Preprint (pdf).
• Zighed, D.A., G. Ritschard and S. Marcellin (2010), Asymmetric and Sample Size Sensitive Entropy Measures for Supervised Learning in Ras, Z.W. and L.-S. Tsay (eds) Advances in Intelligent Information Systems , Series: Studies in Computational Intelligence, Vol. 265, Berlin: Springer. pp. 27-42. doi: 10.1007/978-3-642-05183-8_2. Preprint (pdf).


• Sauvain-Dugerdil, C. et G. Ritschard (2009), Un samedi à Bamako. L'émergence d'une nouvelle culture-jeunes à travers l'utilisation du temps non structuré in J. Vallin (ed), Du genre et de l'Afrique, Paris: INED, pp 113-138. Preprint (pdf).
• Studer, M., G. Ritschard, L. Baccaro, I. Georgiou, N.S. Müller y D.A. Zighed (2009), Relaciones entre tipos de violaciones de libertades sindicales garantizadas por los convenios de le OIT: Un analisis estadistico implicativo de los resultados de un analisis automatico de textos, In P. Orús, L. Zamora y P. Gregori (Eds.) Teoria y applicaciones del Analisis Estadistico Implicativo, Castellón de la Plana (España), Departament de Matemàtiques, Universitat Jaume I, pp 483-504.
• Widmer, E., G. Ritschard et N.S. Müller (2009), Trajectoires professionnelles et familiales en Suisse : quelle pluralisation ? in M. Oris et al. (eds) Transitions dans le parcours de vie et construction des inégalités, Lausanne: Presses Polytechniques Universitaires Romandes, 253-272. Preprint (pdf).
• Gabadinho, A., G. Ritschard, M. Studer and N.S. Müller (2009), Summarizing Sets of Categorical Sequences, in INSTICC Conference on Knowledge Discovery and Information Retrieval, KDIR 2009, Madeira, 6 - 8 October, 2009, Portugal, INSTICC, 62-69. Preprint (pdf).
• Widmer, E. and G. Ritschard (2009), The De-Standardization of the Life Course: Are Men and Women Equal? Advances in Life course Research, 14(1-2), 28-39 [doi]. Preprint (pdf).
• Ritschard, G., M. Studer et M. Oris (2009), Analyse statistique implicative des transitions professionnelles dans la Genève du 19e siècle, in R. Gras, J.-C. Régnier et F. Guillet (eds), Analyse Statistique Implicative. Une méthode d'analyse de données pour la recherche de causalités, Vol. E-16 de Revue des Nouvelles Technologies de l'Information, 421-435. Preprint (pdf).
• Ritschard, G., S. Marcellin et D.A. Zighed (2009), Arbre de décision pour données déséquilibrées : sur la complémentarité de l’intensité d’implication et de l’entropie décentrée, in R. Gras, J.-C. Régnier et F. Guillet, (eds) Analyse Statistique Implicative. Une méthode d'analyse de données pour la recherche de causalités, Vol. E-16 de Revue des Nouvelles Technologies de l'Information, 207-221. Preprint (pdf).
• Studer, M., G. Ritschard, A. Gabadinho et N.S. Müller (2009), Analyse de dissimilarités par arbre d'induction, Revue des Nouvelles Technologies de l'Information, E-15, EGC'2009, 7-18. Preprint (pdf).
• Gabadinho, A., N.S. Müller, G. Ritschard et M. Studer, (2009), TraMineR: une librairie R pour l'analyse de données séquentielles, Revue des Nouvelles Technologies de l'Information, E-15, EGC'2009, p. 483. Preprint (pdf).
• Gabadinho, A., G. Ritschard, M. Studer and N.S. Müller (2009), Mining sequence data in R with the TraMineR package: A user's guide (v1.1), University of Geneva, January 2009, 129 pages.
• Ritschard, G., A. Gabadinho, M. Studer and N.S. Müller (2009), Converting between various sequence representations, in Z. Ras and A. Dardzinska (eds), Advances in Data Management, Series Studies in Computational Intelligence, Vol. 223. Berlin: Springer 155-175. [doi]. Preprint (pdf) 21p.
  
  
• Ritschard, G., A. Gabadinho, N.S. Müller and M. Studer (2008), Mining event histories: A social science perspective, International Journal of Data Mining, Modelling and Management, IJDMMM, 1(1), 68-90, [doi]. Preprint (pdf).
• Sauvain-Dugerdil, C., B. Gakou, F. Berthé, A.W. Dieng, G. Ritschard and M. Lerch (2008), The Start of the Sexual Transition in Mali: Risks and Opportunities, Studies in Family Planning, SFP , 39(4), 263-280.
• Gabadinho, A., G. Ritschard, M. Studer and N.S. Müller (2008), Mining sequence data in R with the TraMineR package: A user's guide, University of Geneva, July 2008, 99 pages.
• Ritschard, G., M. Studer et V. Pisetta (2008), Strategies in Identifying Issues Addressed in Legal Reports, in Paula Brito (ed), COMPSTAT 2008 - Proceedings in Computational Statistics (Porto, August 24-29, 2008), Berlin: Springer, 277-288. [doi]. Preprint (pdf)
• Widmer, E. et G. Ritschard (2008), Trajectoires professionnelles et familiales en Suisse : quelle pluralisation ?, in Colloque lémanique IRIS « Transitions dans le parcours de vie et construction des inégalités », Genève, 20-21 juin 2008 (Colloque IRIS 2008).
• Müller, N.S., A. Gabadinho, G. Ritschard and M. Studer (2008), Extracting knowledge from life courses: Clustering and visualization, in Data Warehousing and Knowledge Discovery, 10th International Conference DaWaK 2008, Turin, Italy, September 2-5, LNCS 5182, Berlin: Springer, 176-185. [doi]. Preprint (pdf).
• Marcellin, S., D.A. Zighed and G. Ritschard (2008), Evaluating decision trees grown with asymmetric entropies, in Foundations of Intelligent Systems, ISMIS08, Proceedings of ISMIS, Toronto 20-23 May 2008, LNAI 4994, Berlin: Springer, 58-67. Preprint (pdf).
• Müller, N.S., S. Lespinats, G. Ritschard, M. Studer et A. Gabadinho (2008), Visualisation et classification des parcours de vie, Revue des Nouvelles Technologies de l'Information, E-11 (vol. II), EGC'2008, 499-510. Preprint (pdf).
• Studer, M., A. Gabadinho, N.S. Müller et G. Ritschard (2008), Approches de type n-grammes pour l'analyse de parcours de vie familiaux, Revue des Nouvelles Technologies de l'Information, E-11 (vol. II), EGC'2008, 511-522. Preprint (pdf).
• Marcellin, S., D.A. Zighed et G. Ritschard (2008), Evaluation des critères asymétriques pour les arbres de décision, Revue des Nouvelles Technologies de l'Information, E-11 (vol. I), EGC'2008, 209-210. Version longue (pdf) dans S. Lallich, P. Lenca et F. Guillet, Actes du 4e atelier Qualité des données et des connaissances (QDC 2008), Nice, 31-38.
• Ritschard, G., V. Pisetta and D.A. Zighed (2008), Inducing and evaluating classification trees with statistical implicative criteria, in R. Gras, E. Suzuki, F. Guillet and F. Spagnolo (eds), Statistical Implicative Analysis: Theory and Applications, Series Studies in Computational Intelligence, Vol. 127. Berlin: Springer, 397-420. [doi]. Preprint (pdf) 22p.
   
• Ritschard, G., D.A. Zighed, L. Baccaro, I. Georgiou, V. Pisetta and M. Studer (2007), Mining Expert Comments on the Application of ILO Conventions on Freedom of Association and Collective Bargaining, Cahiers du Département d'économétrie, no 2007.02, 46 pages. (pdf).
• Müller, N.S., M. Studer et G. Ritschard, G. (2007), Classification de parcours de vie à l’aide de l’optimal matching, XIVe Rencontre de la Société francophone de classification (SFC 2007), Paris, 5-7 septembre 2007, 157-160. Preprint (pdf) 4p.
• Ritschard, G. (2007), Mining event histories: A social scientist view, invited talk at the IASC 2007 Conference on Statistics for data mining, learning and knowledge extraction, Aveiro, Portugal, August 30 - September 1, 2007. Preprint (pdf) 14p.
• Ritschard, G., D.A. Zighed et S. Marcellin (2007), Données déséquilibrées, entropie décentrée et indice d’implication, In Gras, R., P. Orús, B. Pinaud, et P. Gregori (Eds.) Nouveaux apports théoriques à l'analyse statistique implicative et applications (ASI 4), Castellón de la Plana (España), Departament de Matemàtiques, Universitat Jaume I, 315-327. Preprint (pdf).
• Oris, M. et G. Ritschard (2007), Dynamique socioprofessionnelle dans la Genève du 19e, enseignements d’une analyse de statistique implicative, In Gras, R., P. Orús, B. Pinaud, et P. Gregori (Eds.) Nouveaux apports théoriques à l'analyse statistique implicative et applications (ASI 4), Castellón de la Plana (España), Departament de Matemàtiques, Universitat Jaume I, pp 287-300. Preprint (pdf).
• Studer, M., G. Ritschard, L. Baccaro, I. Georgiou, N.S. Müller et D.A. Zighed (2007), Relations entre types de violation des libertés syndicales garanties par les conventions de l’OIT : Une analyse statistique implicative des résultats d'une fouille de texte, In Gras, R., P. Orús, B. Pinaud, et P. Gregori (Eds.) Nouveaux apports théoriques à l'analyse statistique implicative et applications (ASI 4), Castellón de la Plana (España), Departament de Matemàtiques, Universitat Jaume I, pp 111-122. Preprint (pdf).
• Studer, M. and N.S. Müller and G. Ritschard (2007), Understanding the KDE Social Structure through Mining of Email Archive, 2nd Workshop on Public Data about Software Development (WoPDaSD 2007), Third International Conference on Open Source Systems (OSS), Limerick, Ireland, June 11-14, 2007. Preprint (pdf) 11p.
• Ritschard, G., M. Studer, N.S. Müller and A. Gabadinho (2007), Comparing and classifying personal life courses: From time to event methods to sequence analysis, COST Action A34 Gender and Well-Being, Second Symposium, University of Minho, Guimaraes, Portugal, April 25-27, 2007. (pdf) 16p.
• Pisetta, V., G. Ritschard et D.A. Zighed (2007), Choix des conclusions et validation des règles issues d'arbres de classification, Revue des Nouvelles Technologies de l'Information, E-9 (Vol. II), EGC'2007, 485-496. Preprint (pdf) 12p.
• Zighed, D.A., S. Marcellin et G. Ritschard (2007), Mesure d'entropie asymétrique et consistante, Revue des Nouvelles Technologies de l'Information, E-9 (Vol. I), EGC'2007, 81-86. Preprint (pdf) 6p.
• Ritschard, G. et C. Sauvain-Dugerdil (2007), L'enfant ciment du couple ou le couple comme ciment de la relation du père à l'enfant ? Quelques enseignements de l'enquête rétrospective du Panel Suisse de Ménages, in Burton-Jeangros, C., E. Widmer et C. Lalive d'Epinay (eds), Interactions familiales et constructions de l'intimité. Paris : l'Harmattan, coll. Questions sociologiques, pp 57-63. Manuscrit (pdf)
   
• Losa, F.B., P. Origoni and G. Ritschard (2006), Experiences from a socio-economic application of induction trees, in L. Todorovski, N. Lavrac and K.P. Jantke (eds), Discovery Science 2006, 9th International Conference, Barcelona, 7-10 October 2006, LNAI 4265, Berlin: Springer, 311-315. [doi]. Preprint (pdf), extended preprint (pdf)
• Ritschard, G. and D.A. Zighed (2006), Implication strength of classification rules, in F. Esposito, Z.W. Ras, D. Malerba and G. Semeraro (eds), Foundations of Intelligent Systems, ISMIS06, Proceedings of ISMIS, Bari 26-29 September 2006, LNAI 4203, Berlin: Springer, 463-472. [doi]. Preprint (pdf)
• Oris, M., G. Ritschard et G. Ryczkowska (2006), Les solitudes urbaines. Structures et parcours dans la Genève des années 1816-1843, Annales de démographie historique, 111 - 2006/1, 59-87. Manuscrit (pdf).
• Oris, M., G. Ritschard et G. Ryczkowska (2006), Recrutement et renouvellement des groupes socioprofessionnels à Genève, 1816-1843 , in 14e Colloque de l'Association internationale des Démographes de Langue française AIDELF, Aveiro, 18-22 septembre 2006. Manuscrit (pdf) 12p. Formerly presented also at the XIVth International Economic History Congress, Helsinki, August 21-25, 2006.
• Ritschard, G. (2006), Computing and Using the Deviance with Classification Trees, in A. Rizzi and M. Vichi (eds), COMPSTAT 2006 - Proceedings in Computational Statistics, Berlin: Springer, 55-66. (Springer link). [doi]. Preprint (pdf)
• Marcellin, S., D.A. Zighed, and G. Ritschard (2006), Detection of breast cancer using an asymmetric entropy measure, in A. Rizzi and M. Vichi (eds), COMPSTAT 2006 - Proceedings in Computational Statistics, Berlin: Springer, CD 975-982. (Springer link). Preprint (pdf)
• Marcellin, S., D.A. Zighed, and G. Ritschard (2006), An asymmetric entropy measure for decision tree, in Proceedings of the 11th International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU 2006, Paris, 1292-1299. Preprint (pdf)
• Pisetta, V., H. Hacid, F. Bellal, G. Ritschard et D.A. Zighed (2006), Traitement automatique de textes juridiques, in R. Lehn, M. Harzallah, N. Aussenac-Gilles, J. Charlet (eds), Actes de SdC 2006, Semaine de la Connaissance, 26-30 juin 2006, Nantes, (CD et online sur sdc2006.org). Preprint (pdf)
• Ritschard, G. et C. Djeraba (eds) (2006), Extraction et gestion des connaissances (EGC'2006), numéro spécial RNTI-E-6 de la Revue des Nouvelles Technologies de l'Information (747 pages en 2 volumes), Editions RNTI.
   
• Corbet, G., G. Ritschard, D.A. Zighed, M. Charpe et H. Hacid (2005), Etude de l'interdépendance des marchés immobiliers résidentiels sur le bassin franco-valdo-genevois, projet INTERREG IIIA France-Suisse, rapport final, 243 pages, (pdf) env. 5MB.
• Ritschard, G. and M. Oris (2005), Life Course Data in Demography and Social Sciences: Statistical and Data Mining Approaches, in R. Lévy, P. Ghisletta, J.-M. Le Goff, D. Spini et E. Widmer (eds), Towards an Interdisciplinary Perspective on the Life Course, Advances in Life Course Research, Vol. 10. Amsterdam: Elsevier, pp. 283-314. Manuscript (pdf) 28p.
• Ritschard, G. (2005), De l'usage de la statistique implicative dans les arbres de classification, Jounrnées ASI'05. Palerme, Octobre 2005, Quaderni Di Ricerca In Didattica, Supplemento n.2 al N.15, pp. 305-315. Manuscrit (pdf) 12p.
• Oris, M., G. Ritschard and G. Ryczkowska (2005), Siblings in a (neo-)Malthusian town: From cross-sectional to longitudinal perspectives, Historical Social Research, 30(3) 171-194. (pdf)
• Zighed, D.A., G. Ritschard, W. Erray and V.-M. Scuturici (2005), Decision trees with optimal joint partitioning, International Journal of Intelligent Systems, 20(7) 693-718. Preprint (pdf) 24p.
• Ritschard, G. (2005), Implication citoyenne, loisirs et études : le cas des étudiants de sciences sociales, in E. Widmer, D. Royer, B. Burgenmeier et F. Schultheis (eds), Théorie et Pratique de la Démocratie. Essais en l'honneur du professeur Yves Fricker. Paris: Economica, pp 213-232. Manuscrit (pdf) 19p.
• Losa, F., P. Origoni et G. Ritschard (2005), Usage non classificatoire d'arbres de classification : enseignements d'une analyse de la participation féminine à l'emploi en Suisse, Revue des Nouvelles Technologies de l'Information, E-3, EGC'2005, volume I, 7-18. Preprint (pdf) 12p.
• Ritschard, G. (2005), Arbre BIC optimal et taux d'erreur, in Atelier qualité des données et connaissances DKQ05, Paris, 18 janvier. Preprint (pdf) 7p.
• Oris, M., G. Ritschard et G. Ryczkowska (2005), Solitude et vulnérabilité dans les trajectoires de vie féminines, Genève, 1816-1843, colloque Itinéraires féminins organisé par la Société de Démographie Historique, Paris, 21-22 janvier, manuscrit (pdf) 28p
   
• Oris, M., G. Ritschard and G. Ryczkowska (2004), Solitude and Vulnerability in Female Life Courses, Geneva, 1816-1843, SSHA 04, Conference of the Social Science History Association, Chicago, November 18-21, manuscript (pdf) 27p
• Ritschard, G. (2004), Estimer un modèle de Cox en temps continu avec SPSS, in Modélisation des événements et transitions du parcours de vie: Mise en œuvre avec SPSS, documentation en ligne réunie par J.-M. Le Goff, Lausanne: PaVie. Ce chapitre (pdf) 61p.
  (Données et syntaxes SPSS utilisées : rrdat_coxreg_spss.zip)
• Ritschard, G. and M. Oris (2004), Dealing with Life Course Data in Demography: Statistical and Data Mining Approaches, manuscript (pdf) 24p.
• Oris, M. et G. Ritschard (2004), Précarité: état absorbant ou accident de parcours?, in Fragnière, J.-P. et M. Nanchen (eds) Entre science et action. La démographie au service de la cité, Lausanne: Réalités sociales, 115-126. Manuscrit (pdf).
• Ryczkowska, G. et G. Ritschard (2004), Mobilités sociales et spatiales: parcours intergénérationnels d'après les mariages genevois, 1830-1880, ESSHC 04, Berlin, March 24-27. Full paper (pdf) 47p
• Ritschard, G. and D.A. Zighed (2004), Qualités d'ajustement d'arbres d'induction, Revue des Nouvelles Technologies de l'Information, E-1, 45-67. Preprint (pdf)
   
• Zighed, D.A., G. Ritschard, W. Erray and V.-M. Scuturici (2003), Arbogodaï, a New Approach for Decision Trees, in N. Lavrac, D. Gamberger, L. Todorovski and H. Blockeel (eds), Knowledge Discovery in Databases, PKDD 2003, LNAI 2838, Berlin: Springer, 495-506. (Springer link). Extended preprint (pdf)
• Ritschard, G. and D.A. Zighed (2003), Goodness-of-Fit Measures for Induction Trees, in N. Zhong, Z.W. Ras, S. Tsumo and E. Suzuki (eds), Foundations of Intelligent Systems, ISMIS03, LNAI 2871, Berlin: Springer, 57-64. (Springer link). Extended preprint (pdf)
• Ritschard, G. and D.A. Zighed (2003), Simultaneous Row and Column partitioning: the Scope of a Heuristic Approach, in N. Zhong, Z.W. Ras, S. Tsumo and E. Suzuki (eds), Foundations of Intelligent Systems, ISMIS03, LNAI 2871, Berlin: Springer, 468-472. (Springer link). Extended preprint (pdf)
• Ritschard, G. (2003), Testing hypotheses with induction trees, Proceedings of the 54th session of the International Statistical Institute, Berlin, 2003, Invited paper session on Impact of developments in information systems on statistics education. Full paper (pdf), 4p.
• Ritschard, G. et D.A. Zighed (2003), Modélisation de tables de contingence par arbres d'induction, Revue des sciences et technologies de l'information - ECA, 17(1-3), pp. 381-392. Preprint (pdf)
• Ritschard, G. (2003), Partition BIC optimale de l'espace des prédicteurs, Revue des Nouvelles Technologies de l'Information, 1, 99-110. Preprint (pdf)
   
• Ritschard, G. (2002), Comportement d'indices obtenus par post-stratification, in M. Brissaud (ed), Ecrits sur les processus aléatoires - Mélanges en hommage à Robert Fortet, Hermes-sciences, Paris, pp 265--281. Preprint étendu (pdf avec annexe)
• Ritschard, G. (2001), Performance d'une heuristique d'agrégation optimale bidimensionnelle, Extraction des connaissances et apprentissage, 1(4), pp. 185-196. Preprint (pdf)
• Ritschard, G., D.A. Zighed and N. Nicoloyannis (2001), Maximisation de l'association par regroupement de lignes ou de colonnes d'un tableau croisé, Revue Mathématiques Sciences Humaines, 39 (154-155), pp. 81-97. doi: 10.4000/msh.2841. Preprint (pdf)
• Ritschard, G. and N. Nicoloyannis (2000), Aggregation and Association in Cross Tables, in D.A. Zighed, J. Komorowski and J. Zytkow (eds), Knowledge Discovery in Databases, PKDD 2000, LNAI 1910, Berlin: Springer, 593-598. doi: 10.1007/3-540-45372-5_71. preprint (pdf)

... and a few older ones

• Sauvain-Dugerdil, C., N. Kalmykova, H. G. Gu, G. Ritschard, M. Olszak, and H.-M. Hagmann (1997), Vivre sa vieillesse en Suisse. Les transformations des modes de résidence des personnes âgées, European Journal of Population, 13, pp. 169-212. doi: 10.1023/A:1005834527809. (pdf)
• Ritschard, G., J. Kellerhals, M., Olszak and M. Sardi (1996), Path analysis with partial association measures, Quality & Quantity, 30 (1), pp. 37-60. doi: 10.1007/BF00139834. (pdf)
• Olszak, M. and G. Ritschard (1995), The behaviour of nominal and ordinal partial association measures, The Statistician, 44 (2), pp. 195-512. doi: 10.2307/2348444. (pdf)
• Kellerhals, J., C. Montandon, and G. Ritschard (1992), Social status, types of family interaction and educational styles, European Journal of Sociology/Archives Européennes de Sociologie, 33 (2), pp. 308-325. doi: 10.1017/S0003975600006482. (pdf)
• Ritschard, G. and G. Antille (1992), A robust look at the use of regression diagnostics, The Statistician, 41 (1), pp. 41-53. doi: 10.2307/2348635. (pdf)
• Ritschard, G. (1992), The Fundamentals of Monotone Processes Reviewed Trough an Inefficiency Measure, The Quarterly Journal of Economics, 107 (3), pp. 1125-1136. doi: 10.2307/2118379. (pdf)
• Ritschard, G. (1983), Computable Qualitative Comparative Static Techniques, Econometrica, 51 (4), pp. 1145-1168. doi: 10.2307/1912056. (pdf)

Slides

• Strategies in Identifying Issues Addressed in Legal Reports, COMPSTAT'08, Porto, August 2008
  printable version: 6 slides per page
   
• Socioprofessional Dynamics in the 19th Century Geneva, présentation au Séminaire actualités économiques, Université de Genève, 31 mars 2008.
  printable version: 4 slides per page
   
• Mining event histories: A social scientist view, invited talk at the IASC 2007 Conference on Statistics for data mining, learning and knowledge extraction, Aveiro, Portugal, August 30 - September 1, 2007.
  printable version: 6 slides per page
   
• Innovative Data Mining based approaches for life course analysis, International Panel User Conference IPUC 2007, Neuchâtel, Suisse, February 23-24, 2007
  printable version: 6 slides per page
   
• Choix des conclusions et validation des règles issues d'arbres de classification, EGC 2007, Namur, Belgique, 23-26 janvier 2007
  version pour impression: 6 dias par page
   
• Mining Expert Comments on the Application of ILO Conventions on Freedom of Association and Collective Bargaining , Research seminar of the International Institute of Labour Studies (ILO), Geneva, January 17, 2007, (with D.A. Zighed, L. Baccaro, I. Georgiou, V. Pisetta and M. Studer)
   
• Implication strength of classification rules, ISMIS 2006, Bari, Italy, September 27-29, 2006
  printable version: 6 slides per page
   
• Recrutement et renouvellement des groupes socioprofessionnels à Genève, 1816-1843, AIDELF 2006, Aveiro, Portugal, 19-22 septembre 2006
  version imprimable: 6 dias par page
   
• Computing and using the deviance with classification trees, COMPSTAT'06, Rome, August 2006
  printable version: 6 slides per page
   
• De l'usage de la statistique implicative dans les arbres de classification, (Journées ASI 2005, Palerme)
  version imprimable: fonds blanc, 6 dias par page
   
• F.B Losa P. Origoni et G. Ritschard (dans le cadre du Séminaire LaboDemo du 1/2/2005),
  Travailler ou ne pas travailler ? Analyse par arbres d'induction des différences culturelles régionales dans le choix des femmes, handhouts pdf du PowerPoint,
  et Introduction aux arbres et à leur validation (pdf),
  version imprimable du pdf: fonds blanc, 4 dias par page
   
• Usage non classificatoire d'arbres de classification, (Conférence EGC 2005, avec F. Losa et P. Origoni)
  version imprimable: fonds blanc, 4 dias par page
   
• Data mining methods for longitudinal data, (séminaire CIG)
  printable version: white background, 4 slides per page
   
• Social and spatial mobility: Insights from marriage registration acts in Geneva, 1830-1880 (with Grazyna Rycskowska)
  printable version: white background, 4 slides per page
   
• Goodness-of-Fit Measures for Induction Trees (ISMIS03) (with Djamel A. Zighed)
  printable version: white background, 4 slides per page
   
• Historical Demography: From a Crossroad to an Interdisciplinary Exercise (with Michel Oris)
  printable version: white background, 4 slides per page
   
• Les arbres d'induction comme outils de modélisation de tables de contingence multidimensionnelles
  version imprimable: fonds blanc, 4 dias par page
   
• Testing Hypotheses with Induction Trees
  printable version: white background, 4 slides per page
   
• Significativité statistique et qualité d'ajustement (visio-conf. avec Bamako)
  version imprimable: fonds blanc, 4 dias par page
   

TeX stuff

MikTeX project page, MikTeX Forum on SourceForge
CTAN (Comprehensive TeX Archive Network) home page
The TeX Catalogue

My personal packages

Text Editors:

WinEdt main page, WinEdt community WinEdt.org.
My WinEdt macros can be found here :
R-Sweave: WinEdt support (macros, menu, toolbar buttons, highlighting, ...) for R and Sweave. Easy to install through an install macro.
PDFnup: WinEdt nup macro for organizing multiple pdf pages in r x c form by page.

BibTeX Reference Manager:
JabRef

Miscellaneous

Laboratoire ERIC, Université Lyon 2

Revue des nouvelles technologies de l'information (RNTI)

Revue Modulad

KDnuggets: All about Data Mining, Knowledge Discovery, Genomic Mining, Web Mining

R, The R-Project for Statistical Computing. R is a the free open-source statistical environment. 
CRAN Comprehensive R Archive Network.

The ACE Data Mining System (Blockeel et al.)

WEKA Data mining interface (in Java).

RapidMiner open-source stand-alone data-mining system (formerly YALE).

Association EGC (Extraction et Gestion des Connaissances)

My own pieces of softwares

StatGR.xla v3.2,
Add-In for Excel: Freq tables, Histogram, Boxplot, QQ-plot, Correlogram and more.
Zip file StatGR.zip includes Help file.

para.exe, v.1.0 beta 2.5
Computes partial associations and their asymptotic variances.
Para1ins.exe self-extracting zip file (807KB)

oca.exe, v.3.1 beta
Optimal Crosstable Aggregation: Maximizes the Association by Grouping Rows and Columns of a Crosstable.
Oca.zip zip file (~450KB)
First install Oca_ins.exe self-extracting zip file (~920KB) of version 2 with setup program, then replace oca.exe with the new version.