title: information retrieval evaluation python precision, recall, f score, AP,MAP
body: <p>i wrote one program to do the information retrieval and extraction. user enter the query in the search bar, the program can show the relevant txt result such as the relevant sentence and the article which consists the sentence.</p>
  
  <p>I did some research for how to evaluate the result. I might need to calculate the precision, recall, AP, MAP....</p>
  
  <p>However, I am new to that. How to calculate the result. Since my dataset is not labeled and i did not do the classification. The dataset I used was the article from BBC news. there were 200 articles. i named it as 001.txt, 002.txt ...... 200.txt </p>
  
  <p>It would be good if u have any ideas how to do the evaluation in python. Thanks.</p>