Table 1

Meta-Features of Runs

Meta-Feature

Description


FusionIR

fusion - combining results from 2 or more systems regardless of fusion operator used

OkapiIR

passage retrieval using an Okapi BM25 model

TfIdfIR

passage retrieval using a vector space model with any variant of TF-IDF

LmIR

passage retrieval using any language model

DfrIR

passage retrieval using a vector space model with any variant of divergence from randomness (DFR)

...

...


In the TREC 2007 Genomics Track, submissions have employed multiple approaches for retrieval processes, such as query expansion, various levels of passage retrieval granularity, and varying IR models with many different scoring schemes. This table presents five typical and popular meta-features as follows.

Hu et al. BMC Bioinformatics 2011 12(Suppl 5):S6   doi:10.1186/1471-2105-12-S5-S6

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