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Focusing on the document structure of patent, two search databases AC and WH were built and compared in retrieval performance, where AC includes only abstract and claim sections in patent and WH includes the whole patent texts. Moreover, we attempted to combine search results for the two databases to improve retrieval performance. Another point of our(More)
In cross-DB retrieval, the domain of queries differs from the retrieval target in the distribution of that of term occurrences. This causes incorrect term weighting in the retrieval system which assigns to each term a retrieval weight based on the distribution of term occurrences. To resolve the problem, we propose \term distillation" which is a framework(More)
This paper describes our IR (Information Retrieval) based method for SemEval 2016 task 1, Semantic Textual Similarity (STS). The main feature of our approach is to extend a conventional IR-based scheme by incorporating word alignment information. This enables us to develop a more fine-grained similarity measurement. In the evaluation results, we have seen(More)
This paper deals with the assignment problem of cells to switches in a personal communication service network. Three types of costs in a PCS network are considered in detail: the cost of handoffs, the cost of cabling, and the cost of switching. The optimal assignment problem is formulated as an integer-programming problem. A heuristic algorithm is proposed(More)
One target of a ubiquitous computing environment is to aid users to get necessary information and services in a situation-dependent form. We have proposed a locationand orientation-based information support system using the Compact Battery-less Information Terminal (CoBIT). The CoBIT is a small, low cost communication terminal that works using only energy(More)
One target of a ubiquitous computing environment is to aid users in getting necessary information and services in a situation-dependent form. We proposed a location-and orientation-based information support system using the compact battery-less information terminal (CoBIT). The CoBIT is a small, low cost communication terminal that uses only energy from the(More)