Jefrey Lijffijt

I am a postgraduate student and researcher at Aalto University, School of Science, Department of Information and Computer Science, under supervision of Heikki Mannila and I also work with Panagiotis Papapetrou, Kai Puolamäki and Terttu Nevalainen.

I am looking for fundamental breakthroughs in modeling sequential data and natural language, and I have a particular interest in burstiness. My thesis is tentatively titled Data mining methods for sequential data and corpus linguistics.

I have a funded position in the Finnish Doctoral Programme in Computational Sciences (FICS) and I am also affiliated with the Academy of Finland centre-of-excellence in Algorithmic Data Analysis (ALGODAN), the Helsinki Institute for Information Technology (HIIT) and the EU PASCAL2 Network of Excellence.

Because most researchers in DM/ML are not familiar with this resource, I am promoting the Corpus Resource Database (CoRD), which is maintained at the University of Helsinki and contains descriptions of and links to a large set of linguistic corpora, many of which are freely available.

Contact information

E-mail: jefrey.lijffijt@aalto.fi
Office: Room B333, Konemiehentie 2, FI-02150 Espoo, Finland
Mail: Aalto University School of Science, Department of Information and Computer Science, PO Box 15400, FI-00076 Aalto, Finland

Refereed Publications

Journal Articles

Nothing to report, yet.

Conference Articles

Turo Vartiainen, Jefrey Lijffijt. Premodifying -ing participles in the parsed BNC. In Mukherjee, Joybrato and Magnus Huber (eds.) Corpus Linguistics and Variation in English: Theory and Description, pages 247-258. Rodopi, Amsterdam, 2012. (Presentation)
Jefrey Lijffijt, Panagiotis Papapetrou, Kai Puolamäki, Heikki Mannila. Analyzing word frequencies in large text corpora using inter-arrival times and bootstrapping. In Proceedings of the European Conference of Machine Learning and Principles and Practices of Knowledge Discovery in Databases (ECML-PKDD 2011), pages 341-357. Spring-Verlag, Berlin-Heidelberg, 2011. (Article,Presentation,Poster)

Workshop Articles

Kai Puolamäki, Panagiotis Papapetrou, Jefrey Lijffijt. Visually controllable data mining methods. In Proceedings of the 2010 IEEE International Conference on Data Mining Workshops, pages 409-417. IEEE Computer Society, Washington, DC, USA, 2010. (Article)
Jefrey Lijffijt, Panagiotis Papapetrou, Jaakko Hollmén, Vassilis Athitsos. Benchmarking dynamic time warping for music retrieval. In Proceedings of the 3rd International Conference on Pervasive Technologies Related to Assistive Environments (PETRA), article 59. ACM New York, NY, USA, 2010. (Article)
Jefrey Lijffijt, Panagiotis Papapetrou, Jaakko Hollmén. Tracking your steps on the track: body sensor recordings of a controlled walking experiment. In Proceedings of the 3rd International Conference on Pervasive Technologies Related to Assistive Environments (PETRA), article 58. ACM New York, NY, USA, 2010. (Data,Article)

Non-refereed Publications

Letters to Journals

Jefrey Lijffijt, Stefan Th. Gries. Correction to Stefan Th. Gries' "Dispersions and adjusted frequencies in corpora". International Journal of Corpus Linguistics, 17 (1), 147-149, 2012.

Technical Reports

Jefrey Lijffijt, Panagiotis Papapetrou, Niko Vuokko, Kai Puolamäki. The smallest set of constraints that explains the data: a randomization approach. TKK-ICS-R31, TKK Reports in Information and Computer Science, Espoo, May 2010. (Report)
Jefrey Lijffijt, Ingrid C. M. Flinsenberg. Compression-based activity classification and motif discovery in time series of acceleration data. TN-2008-00521, Koninklijke Philips Electronics N.V., Eindhoven, September 2008.

Master's Thesis

Jefrey Lijffijt. Compression-based activity classification and motif discovery in time series of acceleration data. Master's thesis, Utrecht University, Sep. 2008.

Presentations

Invited Talks

Jefrey Lijffijt. Are you talking Bernoulli to me? Significance testing and burstiness of words in text corpora. Department of Mathematics and Statistics, University of Jyväskylä, 11 November 2011, Jyväskylä, Finland. (Presentation)

Conference Presentations and Posters

Panagiotis Papapetrou, Jefrey Lijffijt, Tanja Säily, Kai Puolamäki, Terttu Nevalainen, Heikki Mannila. Are you talking Bernoulli to me? Comparing methods of assessing word frequencies. Helsinki Corpus Festival, 28 Sep - 2 Oct, Helsinki, Finland, 2011. (Presentation)
Turo Vartiainen, Jefrey Lijffijt. Can articles predict the word class of the premodifier? A study of the -ing participle. ICAME 32, 1 - 5 June, Oslo, Norway, 2011.
Turo Vartiainen, Jefrey Lijffijt. Premodifying -ing participles in the parsed BNC. ICAME 31, 26 - 30 May, Giessen, Germany, 2010. (Presentation)
Jefrey Lijffijt, Harri Siirtola, Tanja Säily, Turo Vartiainen, Terttu Nevalainen, Heikki Mannila. Towards interactive visual analysis of corpora. ICAME 31, 26 - 30 May, Giessen, Germany, 2010. (Poster)
Jefrey Lijffijt. Local and global lexicon: a novel approach to quantifying persistence. XXXVII Kielitieteen päivät Helsingin yliopistossa, 20 - 22 May, Helsinki, Finland, 2010. (Presentation)