About librespeaker's sample log info

http://respeaker.io/librespeaker_doc/pulse_snowboy_1b_test_8cc-example.html

When I run above sample, the following log display:
collector: 1, vep_1beam: 0, snowboy_kws: 0
collector: 1, vep_1beam: 0, snowboy_kws: 0
collector: 0, vep_1beam: 0, snowboy_kws: 0
collector: 0, vep_1beam: 0, snowboy_kws: 0

what’s mean of this log info?