In:
INFORMS Journal on Computing, Institute for Operations Research and the Management Sciences (INFORMS), Vol. 29, No. 4 ( 2017-11), p. 660-675
Abstract:
Recent years have witnessed a rapid increase in online data volume and the growing challenge of information overload for web use and applications. Thus, information diversity is of great importance to both information service providers and users of search services. Based on a diversity evaluation measure (namely, information coverage), a heuristic method—FastCov C+S -Select—with corresponding algorithms is designed on the greedy submodular idea. First, we devise the Cov C+S -Select algorithm, which possesses the characteristic of asymptotic optimality, to optimize information coverage using a strategy in the spirit of simulated annealing. To accelerate the efficiency of Cov C+S -Select, its fast approximation (i.e., FastCov C+S -Select) is then developed through a heuristic strategy to downsize the solution space with the properties of information coverage. Furthermore, ample experiments have been conducted to show the effectiveness, efficiency, and parameter robustness of the proposed method, along with comparative analyses revealing the performance’s advantages over other related methods. The online appendix is available at https://doi.org/10.1287/ijoc.2017.0753 .
Type of Medium:
Online Resource
ISSN:
1091-9856
,
1526-5528
DOI:
10.1287/ijoc.2017.0753
Language:
English
Publisher:
Institute for Operations Research and the Management Sciences (INFORMS)
Publication Date:
2017
detail.hit.zdb_id:
2070411-2
detail.hit.zdb_id:
2004082-9
SSG:
3,2
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