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What Can We Learn from Past Mistakes? Lessons from Data Mining the Fannie Mae Mortgage Portfolio
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What Can We Learn from Past Mistakes? Lessons from Data Mining the Fannie Mae Mortgage Portfolio
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Journal Article
What Can We Learn from Past Mistakes? Lessons from Data Mining the Fannie Mae Mortgage Portfolio
2017
Overview
Fannie Mae has been widely criticized for its role in the recent financial crisis, yet no detailed analysis of the systematic patterns of the mortgage defaults that occurred has been published. To address this knowledge gap, we perform data mining on the Fannie Mae mortgage portfolio of the fourth quarter of 2007, which includes 340,537 mortgages with a total principal value of $69.8 billion. This portfolio had the highest delinquency rate in the agency’s history: 19.4% versus the historical average of 1.7%. We find that although a number of information variables that were available at the time of mortgage acquisition are correlated with the subsequent delinquencies, building an accurate model proves challenging. Identification of the majority of delinquencies in the historical data comes at a cost of low precision.
Publisher
American Real Estate Society at Clemson University,Taylor & Francis Ltd
Subject
