Context guided retrieval

Ian Watson, Srinath Perera

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)
7 Downloads (Pure)


This paper presents a hierarchical case representation that uses a context guided retrieval method The performance of this method is compared to that of a simple flat file representation using standard nearest neighbour retrieval. The data presented in this paper is more extensive than that presented in an earlier paper by the same authors. The estimation of the construction costs of light industrial warehouse buildings is used as the test domain. Each case in the system comprises approximately 400 features. These are structured into a hierarchical case representation that holds more general contextual features at its top and specific building elements at its leaves. A modified nearest neighbour retrieval algorithm is used that is guided by contextual similarity. Problems are decomposed into sub-problems and solutions recomposed into a final solution. The comparative results show that the context guided retrieval method using the hierarchical case representation is significantly more accurate than the simpler flat file representation and standard nearest neighbour retrieval.
Original languageEnglish
Publication statusPublished - 1997
Event3rd United Kingdom Case-Based Reasoning Workshop - Manchester
Duration: 1 Jan 1997 → …


Workshop3rd United Kingdom Case-Based Reasoning Workshop
Period1/01/97 → …


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