The construction of an empirically based mathematically derived classification system

  title={The construction of an empirically based mathematically derived classification system},
  author={H. Borko},
  booktitle={AIEE-IRE '62 (Spring)},
  • H. Borko
  • Published in AIEE-IRE '62 (Spring) 1 May 1962
  • Computer Science
This study describes a method for developing an empirically based, computer derived classification system. 618 psychological abstracts were coded in machine language for computer processing. The total text consisted of approximately 50,000 words of which nearly 6,800 were unique words. The computer program arranged these words in order of frequency of occurrence. From the list of words which occurred 20 or more times, excluding syntactical terms, such as, and, but, of, etc., the investigator… 
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Modern Factor Analysis, University of Chicago Press, Chicago, lllinois, 1947
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Probabilistic Indexing
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