help with roc curves and auc

stephanprabustephanprabu
edited July 2010 in Science & Tech
i am new to matlab.. can anyone help me in classifying a simple dataset... I am using this as an oppurtunity to learn... I need to plot ROC curves and find area under the curve too.. can anyone help me.. i can send the data set..

Comments

  • shwaipshwaip bluffin' with my muffin Icrontian
    edited July 2010
    How you classify data depends greatly on the dataset, what kind of labels you have, and how much data / time you have.

    Also, you're asking for a pretty broad scope of information. Saying "I need to learn to classify data" is basically one or two college courses.

    It would help to know what the dataset is and what you're trying to classify about it.
  • stephanprabustephanprabu
    edited July 2010
    thank you for your reply

    http://archive.ics.uci.edu/ml/machine-learning-databases/wine/wine.data

    the above link has the data set in which the first column is the class and the rest 13 are attributes... I'm taking this as an example with which i need to plot ROC curves. I understand the concept in choosing threshold and calculating true positives,false positives,true negatives,false negatives, sensitivity,specificity. however, I am finding it difficult to plot the same in matlab. Can you help me plot ROC curve?
  • stephanprabustephanprabu
    edited July 2010
    I am finding difficulty with coding
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