The NexTrieve Search System in TREC 2001
نویسندگان
چکیده
Both levels of scoring had small multipliers in effect that increased as more search words were found in a particular document or region. Both levels also made use of the same scores applied to the originating words. These word level scores are generated from inverse frequency values in the database, augmented with word "type" information (giving an increase or decrease of the basic value). A "derived" penalty is also present, on words that have been automatically stemmed from an original query word.
منابع مشابه
IBM's Statistical Question Answering System - TREC-10
In this paper, we document our efforts to extend our statistical question answering system for TREC-11. We incorporated a web search feature, and novel extensions of statistical machine translation as well as extracting lexical patterns for exact answers from a supervised corpus. Without modification to our base set of thirty-one categories, we were able to achieve a confidence weighted score o...
متن کاملIBM’s Statistical Question Answering System – TREC-11
In this paper, we document our efforts to extend our statistical question answering system for TREC-11. We incorporated a web search feature, and novel extensions of statistical machine translation as well as extracting lexical patterns for exact answers from a supervised corpus. Without modification to our base set of thirty-one categories, we were able to achieve a confidence weighted score o...
متن کاملIntegrating Features, Models, and Semantics for TREC Video Retrieval
In this paper, we describe a system for automatic and interactive content-based retrieval of video that integrates features, models, and semantics. The novelty of the approach lies in the (1) semi-automatic construction of models of scenes, events, and objects from feature descriptors, and (2) integration of content-based and model-based querying in the search process. We describe several appro...
متن کاملMining Knowledge from Repeated Co-Occurrences: DIOGENE at TREC 2002
This paper presents a new version of the DIOGENE Question Answering (QA) system developed at ITCIrst. With respect to our first participation to the TREC QA main task (TREC-2001), the system presents both improvements and extensions. On one hand, significant improvements rely on the substitution of basic components (e.g. the search engine and the tool in charge of the named entities recognition...
متن کاملMultilingual Question/Answering: the DIOGENE System
This paper presents the DIOGENE question/answering system developed at ITCIrst. The system is based on a rather standard architecture which includes three components for question processing, search and answer extraction. Linguistic processing strongly relies on MULTIWORDNET, an extended version of the English WORDNET. The system has been designed to address two promising directions: multilingua...
متن کامل