label is positive and sentiscore is in negative

sukh

Hi all,
i am working with sentiment analysis. for that i am using IMDb data set which has two directories one for positive and another one is for negative which further consists text files in each directory. these text files are used for training . but the problem arises when the result comes.
As in results for text files fall in positive directory get the sentiment score as negative.

like  label          Sentiscore      document id
        positive        -0.076            1
        negative        0.34              2

how we can say, whether the document is positive or negative?? 

Thanks ans Regards:
Sukh

Andrew2

Hello

Do you know how the positive and negative sentiments were assigned to the documents in the first place? Do you have any reason to think that a sentiment calculated by you would match the original sentiment?

regards

Andrew