TITLE:
Statistically Sufficient Aggregation of Performance Measures under a Normal Distribution
AUTHORS:
Junwook Yoo
KEYWORDS:
Aggregation, Performance Measures, Multiple Tasks, Sufficiency
JOURNAL NAME:
Theoretical Economics Letters,
Vol.9 No.7,
September
17,
2019
ABSTRACT: This study analyzes the minimum dimension of
statistically sufficient aggregation when performance measures are
joint-normally distributed. Statistically sufficient aggregates incur no loss
of information during the aggregation process and provide robustness to
performance evaluation systems. This study shows that there is no
one-dimensional statistically sufficient aggregate in a multi-task setting.