Hi Alan, I'm not the author. The author of this re-implementation is a very well known/respected engineer/coder in USA. Karl Malbrain: http://sites.google.com/site/karlmalbrain/
regards Y. Le 9 janv. 2011 à 23:20, Alan Silverstein a écrit : > I like it, although I didn't take the time to read it all. At first > based on the URL I thought maybe Google Itself had taken notice and > written this webpage, but then I realized not, it's a subdomain under > google.com. It's a smaller reimplementation of the library? With some > creative variations in the API. Does it work as well? That's the key > criterium to me. > > The introduction could but does not say why libJudy is special. In my > mind it has to do with the iron-clad by-expanse (radix) approach to > decoding keys (indexes), which is infinitely extensible, coupled with > all the pragmatic tricks employed in the original code to as portably as > possible make the radix method practical, in fact extremely efficient, > in time and space. Digital trees (tries) were always dissed in the past > as inherently inefficient, and we proved that's not true, undermining > decades of complicated work on optimizing the performance of non-radix > (by-population) trees of many kinds. Unfortunately being R&D engineers > rather than academicians, we never "published our work" other than the > source code, which relegated libJudy to the dusty corners of computer > history when HP canceled the project. > > In your reimplementation, did you study the existing code (difficult I > know), or just recreate the interface but probably not as efficiently? > > Cheers, > Alan Silverstein
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