I am about to submit an article to an international conference (http://www.mldm.de/). I am thinking also to submit to arXiv as well. Is there any problem with this?
2 Answers
The way journals handle arXiv submissions depends entirely on the journal. Generally, it should be allowed since arXiv is a well established service. The only way to know for sure is to read the FAQ/Terms and Conditions or ask the publisher/editor.
MLDM seems to publish the oral papers in LNCS, see oral presentations. LNCS allows preprints on arXiv: LNCS on Sherpa/RoMEO. See also the Springer Authors' Rights
If you want to submit for a poster presentation, you should contact the editor. I couldn't find their policies so far.