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Assumption. If the difference between the score,evaluated by a user, of a knowledge point and the weighted average score of it exceeds a certain range of the confidence interval, we consider the user¡¯s evaluation is unreasonable and his domain weight should be reduced by punishment according  to that difference.
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As for a knowledge point, if the difference between the score evaluated by a user and the weighted average score exceeds a certain range of the confidence interval£¬we consider the evaluated socre from this user is unreasonable and his/her domain weight should be reduced by punishment according to that difference.

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happymusic(½ð±Ò+2): 2011-08-18 16:07:54
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If the difference between the score evaluated by a user and the weighted average score of a knowledge point exceeds a certain range of the confidence interval£¬we consider that the evaluated socre from the user is unreasonable and that his/her domain weight should be reduced by punishment according to the extent of the difference.
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happymusic(½ð±Ò+3, ·­ÒëEPI+1): 2011-08-18 16:07:47
If the diviation between the score evaluated by a user and the weighted average score of a knowledge point exceeds a certain range of the confidential interval£¬we consider that the evaluated socre from the user is unreasonable and that his/her domain weight should be reduced according to the extent of the diviation as a punishment.  
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