Using both monthly aggregate county-level data and monthly individual-level data on welfare participation in California from 1985 to 1997, we show that welfare use patterns in rural and agricultural counties differ from those in urban... more
Using both monthly aggregate county-level data and monthly individual-level data on welfare participation in California from 1985 to 1997, we show that welfare use patterns in rural and agricultural counties differ from those in urban counties. We also explain variation in welfare dynamics between various types of counties, focusing on labor market structure. Our research combines several administrative data sets
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RUBRIC is an expert system for full-text information retrieval. The underlying model for RUBRIC's information retrieval process is based upon fuzzy set theory. The RUBRIC developers have compared RUBRIC to the boolean retrieval model,... more
RUBRIC is an expert system for full-text information retrieval. The underlying model for RUBRIC's information retrieval process is based upon fuzzy set theory. The RUBRIC developers have compared RUBRIC to the boolean retrieval model, which it subsumes. This study compares RUBRIC to the Vector Space Model for information retrieval, using RUBRIC's own test collection of thirty news articles from the Reuters News Service and their test search for articles which satisfy the information need to find out about "violent acts of terrorism." Results indicate that the vector space model is comparable to RUBRIC for relevant documents, while RUBRIC performs better at retrieving marginally relevant documents.
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This paper describes a dictionary-driven, hardware-independent data compression scheme for archival storage of large statistical databases. It discusses motivations for this development, storage format requirements, implementation... more
This paper describes a dictionary-driven, hardware-independent data compression scheme for archival storage of large statistical databases. It discusses motivations for this development, storage format requirements, implementation details, access considerations, and possible extensions of the technique. It also analyzes the degree of compression achieved for different types of statistical data files.
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1University of Hildesheim, Germany, 2University of California, Berkeley, CA, USA 3University of Padua, Italy , 4University of Sheffield, Sheffield, UK, 5Linguateca, SINTEF ICT, Norway E-mail: [email protected] ... In this paper we... more
1University of Hildesheim, Germany, 2University of California, Berkeley, CA, USA 3University of Padua, Italy , 4University of Sheffield, Sheffield, UK, 5Linguateca, SINTEF ICT, Norway E-mail: [email protected] ... In this paper we present an evaluation resource for ...
For the NTCIR Workshop 8 we organized a Geographic and Temporal Information Retrieval Task called NTCIR GeoTime. The focus of this task is on search with Geographic and Temporal constraints. This overview describes the data collections... more
For the NTCIR Workshop 8 we organized a Geographic and Temporal Information Retrieval Task called NTCIR GeoTime. The focus of this task is on search with Geographic and Temporal constraints. This overview describes the data collections (Japanese and ...
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... M08x.:geoclef, author = {Thomas M and Fredric Gey and Giorgio Di Nunzio and Nicola Ferro and Ray Larson and Mark S and Diana Santos and Christa Womser-hacker and Xing Xie}, title = {X ... 1, Wie-Ying (2007): Query Parsing Task for... more
... M08x.:geoclef, author = {Thomas M and Fredric Gey and Giorgio Di Nunzio and Nicola Ferro and Ray Larson and Mark S and Diana Santos and Christa Womser-hacker and Xing Xie}, title = {X ... 1, Wie-Ying (2007): Query Parsing Task for GeoCLEF 2007 Report - Li, Wang, et al. ...
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Abstract. This paper describes two projects which fundamentally change access to cultural materials by automatically marking up textual materials for time, events, geography, and people. Because of the imperfect nature of named entity... more
Abstract. This paper describes two projects which fundamentally change access to cultural materials by automatically marking up textual materials for time, events, geography, and people. Because of the imperfect nature of named entity recognition within natural language processing, it is also important to allow for flexible, interactive markup of these materials by editors, scholars and compilers of cultural collections. Relating people in time and place may help to explore hitherto unrecognized relationships in history and social movements. ...
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SIGIR workshops provide a platform for presenting novel ideas in a less formal and more focused way than the main conference. The SIGIR Workshop Program is a venue where discussion, collaboration and the sharing of ideas can take place.... more
SIGIR workshops provide a platform for presenting novel ideas in a less formal and more focused way than the main conference. The SIGIR Workshop Program is a venue where discussion, collaboration and the sharing of ideas can take place. In the 2009 call for workshop proposals, workshops that fostered collaboration, discussion, and group problem-solving were encouraged.