  This talk at Fradkin conference is devoted to brief description of latest
results in two topics I worked on during last years. The multiresolution
analysis and fast wavelet transform became a standard procedure for pattern
recognition and I describe how it has been used for analysis of high energy
nucleus-nucleus interactions. Latest QCD results on multiplicities in quark and
gluon jets are discussed and confronted to experimental data.

High Energy Physics - Phenomenology