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Table 1 The statistics of the TREC Precision Medicine covering the period of 2017–2019

From: An improved BM25 algorithm for clinical decision support in Precision Medicine based on co-word analysis and Cuckoo Search

Name

2017 and 2018

2019

Abstract-Mean-Length

77.5

83.5

Abstract-Number

26,613,834

29,137,637

Chemical-Mean-Length

3.8

3.8

Chemical-Number

13,113,093

13,670,358

Mesh-Mean-Length

10.5

10.6

Mesh-Number

24,387,151

25,389,659

Keyword-Mean-Length

4.1

4.4

Keyword-Number

4,005,446

5,435,471

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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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