Merge pull request #1 from CyrilPaulus/master

Noms fichiers png en lowercase
Secondary questions: more details
Graphs, learning algorithm, minor corrections
Minor correction
Optimisation problem partially rewritten
Compilation
Minor corrections, correction of ANN regression
Minor corrections
Minor corrections
Minor correction, forgotten line
Minor corrections
Wrong place for a section, minor corrections
Minor corrections, two small new sections
Linear method kernel: illustration
Minor corrections
Correction formule ambiguite
Minor corrections and compilation
Minor corrections
Kernel for ridge regression: more details

Mmmh, math: it's good for you!
Il y a vraiment le .pdf directement dans le git ?