Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 1 Day Ago
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 27 Aug 2017 My Price 8.00

utility matrix

Figure 9.8 is a utility matrix, representing the ratings, on a 1–5 star scale, of eight items, a through h, by three users A, B, and C. Compute the following from the data of this matrix.

(a) Treating the utility matrix as boolean, compute the Jaccard distance between each pair of users.

(b) Repeat Part (a), but use the cosine distance.

(c) Treat ratings of 3, 4, and 5 as 1 and 1, 2, and blank as 0. Compute the Jaccard distance between each pair of users.

(d) Repeat Part (c), but use the cosine distance.

(e) Normalize the matrix by subtracting from each nonblank entry the average value for its user.

(f) Using the normalized matrix from Part (e), compute the cosine distance between each pair of users.

Answers

Maurice Tutor
(5)
Status NEW Posted 27 Aug 2017 09:08 PM My Price 8.00

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