IS 2140: Homework Assignment #8 -- Due April 3



1. Using L1 distance, create a GUIDO plot for the following query and profile (draw the boundaries):

Q = 0 0 1 0 0 1 0 0 1 0
P = 1 0 1 1 0 1 1 0 1 1


2. Plot the documents
A = 0 0 0 0 0 0 0 0 0 1
B = 1 1 1 1 1 1 1 1 1 0
C = 0 0 1 1 0 1 1 0 1 0


3. Draw the boundary for the elliptical region defined by the sum of the query and profile distances is less than 6.

4. On a separate plot, shade in the region corresponding to documents that are within a distance of 4 from the query AND 4 from the profile.

5. On a separate plot, shade in the region corresponding to documents that are within a distance of 3 from the query OR 3 from the profile.

6. On a separate plot, shade in the region corresponding to documents in a Cassini Oval such that the product of the distances is less than 12.

7. On a separate plot, shade in the region corresponding to documents in a weighted ellipse, such that the profile has half the weight of the query.

8. The vectors on the left are vectors in Keyword Space (3 POIs and 2 documents).
Find the screen coordinates for the document, given the POI screen coordinates on the right.

           Keyword Space       Screen Coordinates
POI 1:  1  1  0  0  0  0  0         1  0
POI 2:  0  0  1  1  0  0  0         1  2
POI 3:  0  0  0  0  1  1  1         0  1
DOC 1:  1  0  0  1  0  0  0         ?  ?
DOC 2:  1  1  0  0  1  1  1         ?  ?
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