Constructing high-level representations

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** Next:** Lexical analysis and
**Up:** Recognizing high-level document
** Previous:** Refining the quasi-prefix

This section describes the techniques used to extract
high-level models from the La)TeX source. A recursive
descent parsing algorithm is used to construct the tree structure for document
content conforming to the model described
in s:high-level-models. This algorithm is modified to
construct the quasi-prefix form. These
refinements enable our recognizer to correctly handle ambiguous
mathematical notation, as in the expression [tex2html_wrap5368].
We use a modified version of the conventional operator-precedence
approach for constructing the quasi-prefix form. With the
refinements and heuristics outlined in this section, our algorithm
successfully recognizes written mathematical notation from a wide
variety of sources.

* TV Raman *

Thu Mar 9 20:10:41 EST 1995