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A deductive data model for query expansion

Kalervo J?rvelin, Jaana Kristensen, Timo Niemi, Eero Sormunen, Hiekki Keskustalo
1996 Proceedings of the 19th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '96  
The data model supports a concept-based query expansion and formulation tool, the ExpansionTool, for heterogeneous IR system envirom ments, Expansion is controlled by adjustable matching reliability.  ...  We present a deductive data model for conceptbased query expansion. It ]s based on three abstraction levels: the conceptual, linguistic and occurrence levels.  ...  CONCEPT-BASED QUERY EXPANSION 3.1.  ... 
doi:10.1145/243199.248146 dblp:conf/sigir/JarvelinKNSK96 fatcat:7h75n74kefdllp7hpizt2fq7ke

The impact of query structure and query expansion on retrieval performance

Jaana Kekäläinen, Kalervo J?rvelin
1998 Proceedings of the 21st annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '98  
QE was based on concepts, which were first selected from a conceptual model, and then expanded by semantic relationships given in the model.  ...  The expansion levels were (a) no expansion, (b) a synonym expansion, (c) a narrower concept expansion, (d) an associative concept expansion, and (e) a cumulative expansion of all other expansions.  ...  This study was funded by Emil Aaltosen Säätiö, Pirkanmaan Kulttuurirahasto, and National Multimedia Project, KaMu-Tila.  ... 
doi:10.1145/290941.290978 dblp:conf/sigir/KekalainenJ98 fatcat:mlw7db4wbfb3nbmlhsl4vsvdg4

Learning Information Retrieval through an Educational Game. Is Gaming sufficient for learning?

Kai Halttunen, Eero Sormunen
2000 Education for Information  
The IR Game is based on idea that test collections used in laboratorybased IR experiments could be used in instruction as a rapid query analysis tool.  ...  The perceived usefulness of features like query performancefeedback, visualization of serch results, comparison of queries, document browsing and help facilities are discussed.  ...  The technical and instructional development of IR Game continues, based on the findings of user evaluation and observations from learning situations complemented with conceptions of learning environments  ... 
doi:10.3233/efi-2000-18403 fatcat:3uu4cvmoqrfkbp54qukrrurory