Information Technology Reference
In-Depth Information
8
Semantics and Syntactics for Retrieval from
Full Text
Introduction
This chapter is concerned with bringing the models of semantics and syn-
tactics for full-text retrieval, developed in the previous two chapters, into
dialogue with examples of retrieval from full text. To facilitate under-
standing of the material presented, we will maintain a strong parallelism
with the structure of the previous chapters at macro-, intermediate, and
micro-levels. At the macro-level, the material basis for communication
is prioritized in the sequence of discussion, fully revealing the parallels
between retrieval from full text and the semantics and syntactics already
developed. At an intermediate level, we will maintain the sequence of
examples given in chapter 5 and the progress from considering separate
words to searching for phrases, adding a fuller example. At a micro-
level, each example is considered first in relation to the specific semantics
developed, then in connection with syntactics, and finally regarding other
relevant considerations. We carefully preserve the already developed dif-
ferences between semantics and syntactics and exploit their parallelism.
First, we must establish the correspondence between the already devel-
oped semantics and syntactics and retrieval from full text, primarily
through reference to material basis.
Full-Text Description, Semantics, and Syntactics
Recurrent experiences in retrieval from descriptions of the full-text doc-
uments created by algorithmic transformations on the language of the
documents themselves—both for transformations of meaning and for fre-
