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The Linguist's Shoebox

Integrated data management and analysis for the field linguist


Filtering using And and Or might match different records than you intend.

The ordinary meanings of And and Or are the opposites of the mathematical meanings that are used in Shoebox filters. For example, suppose you want to use a filter to display the records in a bibliographic database that refer to books published in North and South Carolina. The filter would have to be something like \state NC Or \state SC. Although we interpret And as combining two groups of books, Shoebox would check whether each individual record matches both filtering criteria (i.e., is this a book that is published in both NC and SC?). When you build a filter from multiple elements, think of a few sample records to be included and to be excluded, then test it by matching them in your mind according to the mathematical meanings:

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