open-source

does anyone know about a open source expert system? actually, I'm rather interested in calling its inferential engine from C#. MountainX Both CLIPS and JESS are already mentioned in other answers, so I will supply this link to CLIPS versus JESS: http://www.comp.lancs.ac.uk/~kristof/research/notes/clipsvsjess/ It was written June 4, 1999, and at that time the advantage was clearly with CLIPS. If you don't want to read it all, here are the conclusions: Chapter 3 The conclusions Both CLIPS and JESS are products with a large support on the internet, but CLIPS seems to have a broader audience,

I am looking for a reference implementation of IEEE-754 operations. Is there such a thing? I believe the C libraries SoftFloat and fdlibm are suitable for what you are looking for. Others include Linux (GNU libc, glibc ) or *BSD libc's math functions . Finally, CRlibm should also be of interest to you. Ulrich Drepper has a interesting look at different math libraries , that might be also worth reading through. I must disappoint you: There is practically none. While technically there are IEEE-754 compliant systems because they do not implement non-required features described in the standard, a

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. I googled and came up blank - so it's time to test the good folks at SO again! :) Can anyone recommend an open source library (pref for .NET) that parses and calculates mathematical expressions? e.g. input expression = "2+(n-1)*4" , parameter key/value n=2 , output = 6 . I would take a look at NCalc . Here is a description of the project: NCalc is a mathematical expressions evaluator in .NET. NCalc can parse any

Disclaimer: I did check other questions that seemed related, but this one is much broader and less specific, its goals are completely different, too (so, please do read first before deleting!): Now, while there's " How To Ask Questions The Smart Way ", and also " How to Report Bugs Effectively " (both of which are extremely helpful when interacting with users), there doesn't yet seem to be a similarly comprehensive guide about "how to get successfully involved in an open source project", specifically written for new aspiring contributors. So, what do you think, are the most important factors,

The url shortening service I'm building needs to display some basic click stats to users: # of clicks, conversions, referring domains, and country (filterable by a date range). I'll possibly want more advanced stats in the future. Is there existing open source software that will allow me to pass events to it and then easily display a bar or line graph of that event (for example, a line graph of "conversions" between two specified dates). It seems like something like this should exist and would be much easier then building the whole thing from scratch. I know there are graphing scripts, but