Patent ID: 8452641
Filing Date: 2013-05-28
Classification: G06Q

Abstract:
1. A computer-implemented method for estimating a weighted repeat sales index using a regularized estimator using a computer system that includes a processor, and a database, the method comprising the following steps: calculating, with the processor using information stored in the database, data for estimating adjustments from an aggregated level to a first disaggregated level by marking a first transaction to a second transaction using a repeat sales house price index function at the aggregated level; combining, using the processor, one or more repeat transaction returns into a first set, the one or more repeat transaction returns being based on a price of the first transaction price and a price of the second transaction; determining, using the processor, a second set of one or more regressors based on at least one of a time period the first transaction took place, a time period the second transaction took place, the first transaction being a refinance transaction or not a refinance transaction, or the second transaction being a refinance transaction or not a refinance transaction; determining, with the processor, a regularized estimator in a linear fashion based on the first set and the second set, and storing the regularized estimator in the database; determining, with the processor, using the calculated data and the regularized estimator, a regularized estimate of the deviation between the repeat sales house price index at the aggregated level and a repeat sales house price index at the first disaggregated level; and calculating, with the processor, the repeat sales house price index at the first disaggregated level based on the determined regularized estimate of the deviation from the aggregated level.