{'fraction_non_alphanumeric': 0.010350318471337579, 'fraction_numerical': 0.0, 'mean_word_length': 5.61578947368421, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Delineating the Relevant Market from Census Industry Classifications

The establishment of the relevant market is of critical importance to the courts in determinating the verdict in merger and monopolization cases. Numerous conceptual problems exist even when the issues are limited to the product market alone. Section I of this paper investigates and clarifies the criteria of product delineating, specifically the roles of supply and demand cross elasticity. Section II introduces the redistribution technique for evaluating the Census Industrial Classification (SIC) system. This approach is based upon the presumption that all five-digit product classes aggregated into a good fourdigit industry should experience similar relative growth or decline in sales for a particular region between census periods. A descriptive statistic is developed which describes the similarity of the product classes in reacting to temporal changes in the determinants of demand. This similarity is expected to be greater for good industry classification. The remaining sections deal with the application of the technique. Section III examines several possible economic relationships which could distort the interpretation of the results. Section IV compares the quality