Suppose that an IR system contains only 1000 documents. A query is known to gene

Question

Suppose that an IR system contains only 1000 documents. A query is known to generate 27 relevant documents as listed below: (d, ds, d7, do, dss, d51, d20o, d211, d25o, dsoo, d399, d401, d405, d450, d473, d50o, dso1, d530, d545, d590, dsoo, d735, d7oo, d720, dso0, dsss, d9oo) Two different IR systems are used to retrieve ranked documents for this query. Each system only returns the top 10 ranked documents in order of ranking. Systems 1 and 2 eaclh retrieves documents one at a time in the following order with all 10 documents eventually returned System 1: d22, d211, di50, dss, d37, d, dsoi, dso0, d201, ds. System 2: dio, droo, ds, d2so, dss.dsoo, ds9, d422, dsoo, d. Answer the following and show your work (7 points) Calculate the precision and recall values for each system (for 1 returned, 2 documents returned,..., 10 documents returned). Using table formatting to keep your calculation organized is required. 3 points) Which IR system is better? Justify your answer. ·

Explanation / Answer

lines2 = cv2.computeCorrespondEpilines(pts1.reshape(-1,1,2), 1,F) lines2 = lines2.reshape(-1,3) img3,img4 = drawlines(img2,img1,lines2,pts2,pts1) plt.subplot(121),plt.imshow(img5) plt.subplot(122),plt.imshow(img3) plt.show()

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