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Reconfigurable computing based on FPGA is a promising solution to accelerate applications for web search engines. Due to the challenge of such data-intensive applications, data compression has become much more important. This paper proposes a data compression method for inverted indices, which combines the bit-level compression method - Huffman coding and a coarse-grained compression method, to achieve...
Put the predicting query performance(PQP) into the query fusion and construct a new adaptive information retrieval system(QAAIR) based on performance analysis in the base of analyzing the method of PQP for IR system and expound the main technique. The experiment adopted testing data of TREC Web track show the method can improve the effectiveness of query and overcome the robust of information retrieval.
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity. Put forward one new query fusion method based on the prediction query performance (PQP) for the first time. And put forward a new pseudo prediction query performance method. Adopted testing data of UIUC. The experiment show the...
Web search engine companies are intensively running learning to rank algorithms to improve the search relevance. Neural network (NN)-based approaches, such as LambdaRank, can significantly increase the ranking quality. While, their training is very slow on a single computer and inherent coarse-grained parallelism could be hardly utilized by computer clusters. Thus an efficient implementation is necessary...
In order to quickly and accurately using mass information in the deep Web database. According to the characteristics of the deep Web: large-scale, dynamic and heterogeneity, One new query method was put forward based on the document divergence for the first time. The experiment adopted testing data of TREC show the method can avoid the repeat of query document in effect, especially for a great deal...
Prediction query performance (PQP) has been recognized by the IR (Information Retrieval) community as an important capability for IR systems. This paper put forward pseudo prediction query performance in the base of analyzing PQP. The authors design a new IR method. The experiment adopted testing data of TREC Web Track shows the method can improve the effectiveness of query.
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