<DOC>
<DOCNO> SP500215 </DOCNO>
<TITLE> NIST Special Publication 500-215: The Second Text REtrieval Conference (TREC-2) </TITLE>
<SUBTITLE> Appendix B: System Features </SUBTITLE>
<TYPE> Appendix </TYPE>
<PAGE CHAPTER="B" NUMBER="81">
<AUTHOR1> </AUTHOR1>
<PUBLISHER> National Institute of Standards and Technology </PUBLISHER>
<EDITOR1> D. K. Harman </EDITOR1>
<COPYRIGHT MTH="March" DAY="" YEAR="1994" BY="National Institute of Standards and Technology">
</COPYRIGHT>
<BODY>
HL SEARCHING (CON'T)
I importance coefficient (with a value of 0.5, 1,2, or 3) was assigned based on position of the term in the topic statement. Assignments were subject to corr[OCRerr]
manual processing.
rnilarity scores are calculated over sub[OCRerr]ocuments; the maximum score for any sub[OCRerr]ocument is assigned as the score for the whole document.
[OCRerr] (Stage l's subject field code module)
[OCRerr] (Stage 2)
es (the existence and nature of relationship between concepts are important - Stage 2)
es (Stage l's proper noun, complex nominal and text structure boolean criteria matching module)
`es (Stage 2).
</BODY>
</PAGE>
</DOC>