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The Linear Combination Method

Shengli Wu
Published 2012 · Computer Science

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In data fusion, the linear combination method is a very flexible method since different weights can be assigned to different systems. When using the linear combination method, how to decide weights is a key issue. Profitable weights assignment is affected by a few factors mainly including performance of all component results and similarity among component results. In this chapter, we are going to discuss a few different methods for weights assignment. Extensive experimental results with TREC data are given to evaluate the effectiveness of these weights assignment methods and to reveal the properties of the linear combination data fusion methods.

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