On the size of full element-indexes for XML keyword search

Using object-oriented materialized views to answer selection-based complex queries Alhajj, R; Polat, Faruk (1999-09-01) Presented in this paper is a model that utilizes existing materialized views to handle a wide range of complex selection-based queries, including linear recursive queries. Such queries are complex because it is almost impossible for naive users to predict the formulation of their predicate expressions. Object variables bound to objects in the result of a query are allowed to appear in the predicate of that query. Also, the predicate definition is extended to make it possible to have in the output only a sub...
Integer Linear Programming Solution for the Multiple Query Optimization Problem Dokeroglu, Tansel; Bayir, Murat Ali; Coşar, Ahmet (2014-10-28) Multiple Query Optimization (MQO) is a technique for processing a batch of queries in such a way that shared tasks in these queries are executed only once, resulting in significant savings in the total evaluation. The first phase of MQO requires producing alternative query execution plans so that the shared tasks between queries are identified and maximized. The second phase of MQO is an optimization problem where the goal is selecting exactly one of the alternative plans for each query to minimize the tota...
On endomorphisms of surface mapping class groups Korkmaz, Mustafa (Elsevier BV, 2001-05-01) In this paper, we prove that every endomorphism of the mapping class group of an orientable surface onto a subgroup of finite index is in fact an automorphism.
Static index pruning in web search engines Altıngövde, İsmail Sengör; Ulusoy, Özgür (Association for Computing Machinery (ACM), 2012-2-1) Static index pruning techniques permanently remove a presumably redundant part of an inverted file, to reduce the file size and query processing time. These techniques differ in deciding which parts of an index can be removed safely; that is, without changing the top-ranked query results. As defined in the literature, the query view of a document is the set of query terms that access to this particular document, that is, retrieves this document among its top results. In this paper, we first propose using qu...
On the Efficiency of Selective Search Hafizoglu, Fatih; Kucukoglu, Emre Can; Altıngövde, İsmail Sengör (2017-04-13) Our work shows that the query latency for selective search over a topically partitioned collection can be reduced by up to 55%. We achieve this by physically storing the documents in each topical cluster across all shards and building a cluster-skipping index at each shard. Our approach also achieves uniform load balance among the shards.

Citation Formats

D. Atilgan, İ. S. Altıngövde, and Ö. Ulusoy, “On the size of full element-indexes for XML keyword search,” 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34486.