Fraunhofer Institut für Integrierte Publikations-und Informationssysteme IPSI

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The layer-seeds term clustering method: Enabling proactive situation-aware product recommendations in e-commerce dialogues

2005 , Chen, L. , L'Abbate, M. , Thiel, U. , Neuhold, E.J.

In e-commerce it is often crucial to provide customers a large choice of relevant offers. Users, however, seldom provides complete and comprehensive descriptions of their desires, therefore user interfaces are needed that can generate automatically expanded queries to the product database and proactively enrich the ongoing dialogue with recommendations of suitable products. Automatic query expansion is mostly based on thesaurus and/or user profiles. In e-commerce applications, specific thesauri reflecting the webstore's product categories are desirable. This work describes a method for the automatic construction of a thesaurus based on existing categories of documents. A clustering algorithm, the "Layer-Seeds method", is introduced, which facilitates the automatic generation of thesaurus reflecting the specific vocabulary occurring in a given collection of documents. The clustering works on terms extracted from the documents in a certain category and organizes them in a tree-like hierarchical structure-a thesaurus. The thesaurus is then employed for automatic query expansion in an e-commerce application in order to obtain better results for product searching. Experiments yield evidence that a significant increase of user satisfaction is achieved.

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Constraints-based query translation across heterogeneous sources for distributed information retrieval

2002 , Huang, L. , Thiel, U. , Hemmje, M. , Neuhold, E.J.

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Adaptive web meta-search enhanced by contraint-based query constructing and mapping

2001 , Huang, L. , Thiel, U. , Hemmje, M. , Neuhold, E.J.

This paper introduces an adaptive method that can be used to construct the query user interfaces for the information integration systems (IIS) on the Web, and a constraint-based method for mapping queries from such IISs into the specific formats of heterogeneous Internet sources. The fuse of this research was ignited by witnessing that WWW information searching becomes harder and harder due to the tremendous development of the Internet and the explosive growth of digital information on the World Wide Web. Incorporating adaptive and constraints-coordinated mechanisms into an information integration system can overcome the diversity of heterogeneous sources and utilize the functionality of the individual sources to the fullest extent.

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Increasing the customer's choice: query expansion based on the layer-seeds method and its application in e-commerce

2004 , Chen, L. , L'Abbate, M. , Thiel, U. , Neuhold, E.J.

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Distributed information search with adaptive meta-search engines

2001 , Huang, L. , Thiel, U. , Hemmje, M. , Neuhold, E.J.

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Publication

Constraints-based Query Translation across Heterogeneous Information Sources

2000 , Huang, L. , Thiel, U. , Hemmje, M. , Neuhold, E.J.

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Publication

COLLATE - A collaboratory supporting research on historic European films

2004 , Thiel, U. , Brocks, H. , Frommholz, I. , Dirsch-Weigand, A. , Keiper, J. , Stein, A. , Neuhold, E.J.

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Adaptively Constructing the Query Interface for Meta-Search Engines

2001 , Huang, L. , Thiel, U. , Hemmje, M. , Neuhold, E.J.

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