发明名称 |
METHODS AND APPARATUS TO CALIBRATE A CHOICE FORECASTING SYSTEM FOR USE IN MARKET SHARE FORECASTING |
摘要 |
Methods and apparatus to calibrate a choice forecasting system for use in market share forecasting are disclosed. An example disclosed method comprises obtaining market research data to determine a plurality of choice probabilities and a plurality of segment weights, each choice probability representing a probability that a respective population segment will choose a respective alternative from a plurality of alternatives and each segment weight representing a weight of a respective population segment in an overall population, and performing a calibration procedure to calibrate the plurality of choice probabilities and plurality of segment weights, the calibration procedure configured to preserve before and after calibration relative contributions of a pair of population segments to a first choice share corresponding to a first alternative, the first choice share for the first alternative determinable from the plurality of segment weights and a subset of the plurality of choice probabilities corresponding to the first alternative. |
申请公布号 |
WO2010025252(A2) |
申请公布日期 |
2010.03.04 |
申请号 |
WO2009US55199 |
申请日期 |
2009.08.27 |
申请人 |
THE NIELSEN COMPANY (US), LLC |
发明人 |
WAGNER, JOHN GERARD;ZIMMERMAN, WILLIAM, KELLY |
分类号 |
G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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