Reference. Julian Kupiec, Jan Pedersen, Francine Chen, “A Trainable Document Summarizer”, SIGIR’95 Seattle WA USA, 1995.
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Julian Kupiec, Jan Pedersen and Francine ChenXerox Palo Alto Research Center
which can be expressed using Bayes’ rule as follows:
Assuming statistical independence of the features:
is a constant and and can be estimated directly from the training set by “counting occurrences”
Xiaodan Zhu and Gerald PennDepartment of Computer Science University of Toronto