{'fraction_non_alphanumeric': 0.031832651205093224, 'fraction_numerical': 0.027285129604365622, 'mean_word_length': 5.489675516224189, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Text Classification A course to be delivered at WebBar’07 August 27–31, 2007 – Varenna, Italy

Since 2000 Fabrizio Sebastiani’s main research interests have been at the intersection among information retrieval, machine learning, and human language technology, with particular emphasis on text classification, text clustering, and applications of text classification such as lexicon learning, sentiment classification, and survey coding. On these and other topics he has published several articles in international journals, conferences, and edited collections. He has guest-edited a special issue on automated text classification of the Journal of Intelligent Information Systems [JS02], and has been the Chairman of the ACM SIGIR 2002 Workshop on Operational Text Classification Systems. He has been the Area Chair for “Machine Learning for IR, Text Data Mining, Clustering, Text Categorization” at SIGIR’03, SIGIR’04, SIGIR’05, SIGIR’07. On text classification he has given several tutorials at international conferences and courses at summer schools, among which the IJCAI, COLING, ECDL conferences, and the ESSLLI and ESSIR summer schools. His review article “Machine learning in automated document categorisation” [Seb02] is, as of today, the most quoted article in ACM Computing Surveys since 2000, totalling more than 1000 quotations according to Google Scholar. Fabrizio Sebastiani is the Editor-in-Chief (with Jamie Callan) of the newly launched journal Foundations and Trends in Information Retrieval (Now Publishers). He is currently a member of the Editorial Boards of the Journal of the American Society for Information Science and Technology, Information Retrieval, Information Processing and Management, and ACM Transactions on Information Systems journals; he has also been a reviewer for more than 30 different international journals. In 2003 he was program chairman of the 25th European Conference on Information Retrieval (ECIR-03). Since July 2003 to June 2007, he has been the Vice-Chairman of ACM SIGIR. He is a Program co-Chairman of the upcoming ACM SIGIR 2008 conference. Some of his recent publications related to text classification are listed at the end of this document.