Is there a place for publishing ideas (no tangible results)? While working on my thesis in neutron imaging I got an idea for a new approach to data analysis, involving Machine Learning solutions that are not available at the moment (please note that I am a physicist, with little computer science background). I spoke about it with a few colleagues and I got good feedback, even if nobody wanted to collaborate on it (sounds too abstract, I guess). I contacted a few computer scientists, and nobody had time for this ;-)

I am now job hunting and I can't work full time on something where I need to start from scratch, but I still think it would be worth try to publish the idea somewhere (it seems none is working in that direction). Do you know if there is a journal or something similar for publishing suggestions on possible research directions in computer science and/or data analysis and algorithms development? Thanks
While you might struggle to publish something like this in a journal, in Computer Science there are other venues to look out for, such as conferences and workshops. These are smaller (and sometimes less prestigious) than journals, but usually with a tighter focus: you can often publish work-in-progress or position papers. 

Edit: Some conferences are large, prestigious events, and will expect a substantial contribution to the field, so before you decide where to submit, take a look at past papers, and the sort of thing they tend to publish.