Yoav Freund Michael J. Kearns Dana Ron Ronitt Rubinfeld Robert E. Schapire Linda Sellie Efficient learning of typical finite automata from random walks. 315-324 1993 STOC http://doi.acm.org/10.1145/167088.167191 db/conf/stoc/stoc1993.html#FreundKRRSS93