4.2 Search Engine Requirements

To meet the imminent search needs of the DLMF, we pragmatically opted for the augmentation approach. The first step was to find a text search engine which has a wide range of capabilities and features to make it amenable to augmentation for math search. The second step was to carry out the actual augmentation.

There are a number of search systems, some of which are in the public domain [16,20,12,15,19] while many others are commercially available³. Clearly, what is important is not which specific system to go with, but what features are the most relevant and useful for adaptation and augmentation to math search.

In our experience, we found that to ease augmentation to math search, certain capabilities and features are particularly desirable to have in a text search system. These capabilities and features are described in the next 4 subsections.

Footnotes

... available³

Identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that these systems are necessarily the best available for the purpose