validness 

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n. validity

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1. The vectorial angle method is employed to evaluate the validness of every drill-down operation.
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2. The participation degree and justice of this appraisal guarantees the truth, fairness and validness of the activity.
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3. This approach and the tool BCM have been applied into the scenario of college-city supermarket and derive reliable experiment results which proves the validness of the method.
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n.
  1. the quality of having legal force or effectiveness

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validness
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