]> 2012-05-27T21:13:58-04:00 Gregory Todd Williams SPARQL BGP Optimization Presentation Joshua Taylor 3 The authors state in '''1. INTRODUCTION''' that "We focus on the ''evaluation of the presented optimization techniques'' without comparing the figures with the performance of alternative implementations." What value then ought we to ascribe to the work the authors performed? If I were to start with an exponential-time algorithm, and invent an optimization that yields an polynomial-time algorithm, and it will seem impressive, but if someone else has recognized that the problem can be solved in linear or constant time, it would be somewhat suspicious if I was not "comparing the figures with the performance of 'alternative implementations'" (single/scare quotes added for emphasis). Gregory Todd Williams SPARQL BGP Optimization Presentation Question for the Presentation Joshua A. Taylor Question asked by Question asked Presentation Questions