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Frei, H.P.; Meienberg, S.: Evaluating weighted search terms as Boolean queries (1991)
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- Pages
- S.11-22
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Frei, H.P.; Jauslin, J.F.: Graphical representation of information services : a user-oriented interface (1983)
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- Source
- Information technology: research and development. 2(1983) no.1, S.23-42
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Qiu, Y.; Frei, H.P.: Concept based query expansion (1993)
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- Source
- SIGIR forum. 1993, Special issue, S.160-169
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Frei, H.P.; Meienberg, S.; Schäuble, P.: ¬The perils of interpreting recall and precision values (1991)
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- Pages
- S.1-10
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Frei, H.P.; Stieger, D.: ¬The use of semantic links in hypertext information retrieval (1995)
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- Information processing and management. 31(1995) no.1, S.1-13
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Frei, H.P.; Schäuble, P.: Determining the effectiveness of retrieval algorithms (1991)
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- Information processing and management. 27(1991) no.2/3, S.153-164