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In 3FGL catalog more than 52 % of the FERMI LAT sources are still unclassified. Learning machine technique is one of the most interesting approach for screening and ranking sources, according with their predicted source class. This study is a part of a wider analysis of unclassified sources listed the Fermi LAT 4-Year Point Source Catalog (3FGL) as described in http://adsabs.harvard.edu/abs/2016ApJ...820....8S , ( Paper1 ) and http://adsabs.harvard.edu/abs/2016MNRAS.462.3180C (Paper2). The final result of this study suggests a new zoo for 3FGL sources where the percentage of uncertain sources drops from 52% to 10 % . and opens new planning for mutiwavelenght observational campaings
Fig. 1 3FGL including classification as in Paper1 and Paper2 before this study
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