... set with thelearned content distribution for that document set’stopic, ζ(z), where z is the topic for the given docu-ment set. Following this method, which we call SBH for “SumBasic with ... pioneer-ing summarization work performed at IBM in the1950’s (Luhn, 1958), methods based on simple wordstatistics continue to outperform more complicatedapproaches to automatic summarization. 3Nenkovaet ... word.3 Our Summarization ModelNenkova et al. (2006) show that using term fre-quency is a powerful approach to modeling human summarization. Nevertheless, for SumBasic to per-form well, stop-words...