The paper applied the Partial Least Squares (PLS) approach to multi-evaluate the performance of public sectors. First, the PLS approach was reviewed, the PLS modeling process was interpreted and distinguished with Ordinary Least Square(OLS) on performance assessment of public sectors. Second, the PLS method was utilized to analyze public sector performance evaluated by four different bodies in Shanghai as an example, through analysis it was found that the different evaluated sector had one accord with the weighted order of different evaluation index from the four evaluators, the weighted order from larger to smaller was government openness, the management efficiency, executive fairness, fulfilled responsibility, incorruptibly honest, and the service attitude. Meanwhile, in the midst of the four evaluators,there were different contributions from integrated index of every sectors, the influenced via more to less was followed by the superior evaluator, parallel evaluator, professional evaluator and public evaluator. Finally, it was testified that the PLS was suitable method to multi-evaluate public sectors. These conclusions were meaningful upon researching and conducting performance multi-evaluation to public sectors.
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