Sunday, December 12, 2010

Reading #16: Graph based symbol recognizer

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  • Lee et al. present a graph-based system for combining primitives into symbols and matching them to templates. They investigate four approaches to computing the best matching between primitives in the symbol to be recognized and the primitives in the template.

    This paper would probably benefit from, well, taking a class like Introduction to Search 101. Stochastic Search is like a super-weakened version of simulated annealing. Error-based search is just a heuristic search, but doesn't use any framework/structure for heuristic searches like A*. The authors might consider a real implementation of simulated annealing, or maybe beefing up Greedy search into a beam search.

    There's a polynomial-time exact solution to the matching problem. It's often slower than search techniques, but it does provide a much better solution.

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