 get the syntax wrong (we term these imprecise
diagrams).  Despite these errors, viewers of the diagrams are, more
often than not, able to extract the intended meaning from the diagram.
This is analogous to text, where people are generally able to make
sense of ungrammatical sentences.  </p>

<p>Our research in this is concerned with ways of automatically
finding the meaningful sub-parts of the diagram, inferring their
meaning (perhaps in the face of imprecision), and then combining these
meanings to find t