{'fraction_non_alphanumeric': 0.026124818577648767, 'fraction_numerical': 0.008708272859216255, 'mean_word_length': 5.330275229357798, '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}}
Foundations of Revealed Preference: Introduction

On 19 April 2011, the Royal Economic Society (RES) and the Centre for Microdata Methods and Practice (CeMMAP) held a special session on the Foundations of Revealed Preference at the RES Annual Conference. This session was in honour of Sydney Afriat (University of Siena), Erwin Diewert (University of British Columbia) and Hal Varian (Berkeley), who are three key contributors to the theory of revealed preference. In this article, I briefly discuss some of the contributions to revealed preference theory by these eminent economists and provide a short introduction to the following three articles by their hand in this Conference Volume.