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We describe Web-a-Where, a system for associating geography with Web pages. Web-a-Where locates mentions of places and determines the place each name refers to. In addition, it assigns to each page a geographic <i>focus</i> --- a locality that the page discusses as a whole. The tagging process is simple and fast, aimed to be applied to large collections of(More)
E-commerce and intranet search systems require newly arriving content to be indexed and made available for search within minutes or hours of arrival. Applications such as file system and email search demand even faster turnaround from search systems, requiring new content to become available for search almost instantaneously. However, incrementally updating(More)
We describe a system for extracting mentions of terms such as company and product names, in a large and noisy corpus of documents, such as the World Wide Web. Since natural language terms are highly ambiguous, a significant challenge in this task is disambiguating which occurrences of each term are truly related to the right meaning, and which are not. We(More)
The Java Virtual Machine (Jvm) needs, for the purpose of garbage collection (GC), to determine the data type stored in every memory location. Jvms that can do this reliably are said to be type-accurate (TA). Full type-accuracy usually exacts a price in performance due to the need to scan stacks and registers accurately. The mostly accurate approach(More)
A parameter adaptive control stmcture for linear multivariable systems,'' IEEE Trans. Abstract-Global convergence of a number of discrete-time adaptive control algorithms with persistently exciting inputs has been established in the literature. A key element of the convergence proof is the " block-invariance " feature of the algorithm. Namely, while the(More)
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