Recommender System

$5$ points

Consider a table with $4$ user ratings on $8$ items as shown below.

$\backslash$table$[[$userID$/$game$,$WatchDog,GTAV,PUBG,StarCraft,CallOfDuty,FIFA,WOW,MineCraft$],[$firechicken$,3,3,4,,4,2,3,],[$mike$0702,3,5,4,3,3,,4,],[$zephyros$,,4,,5,,2,1,],[$dadvador$,2,,4,4,4,5,,]]$

Treating the utility matrix as boolean $($buy or not buy$),$ compute the Jaccard distance between firechicken and mike$0702.$ Please answer to two decimal places.

Note: It is possible to solve this question mathematically, but it may be easier to solve this question programmatically.

$4.$ Recommender System

$5$ points

Consider a table with $4$ user ratings on $8$ items as shown below.

$\backslash$table$[[$userID$/$game$,$WatchDog,GTAV,PUBG,StarCraft,CallOfDuty,FIFA,WOW,MineCraft$],[$firechicken$,3,3,4,,4,2,3,],[$mike$0702,3,5,4,3,3,,4,],[$zephyros$,,4,,5,,2,1,],[$dadvador$,2,,4,4,4,5,,]]$

Treating the utility matrix as boolean $($buy or not buy$),$ compute the Cosine distance between firechicken and mike$0702.$ Please answer to three decimal places.

Note: It is possible to solve this question mathematically, but it may be easier to solve this question programmatically.

$.$ Kecommenaer system

$5$ points

Consider a table with $4$ user ratings on $8$ items as shown below.

$\backslash$table$[[$userID$/$game$,$WatchDog,GTAV,PUBG,StarCraft,CallOfDuty,FIFA,WOW,MineCraft$],[$firechicken$,3,3,4,,4,2,3,],[$mike$0702,3,5,4,3,3,,4,],[$zephyros$,,4,,5,,2,1,],[$dadvador$,2,,4,4,4,5,,]]$

Now, let's convert user ratings to good vs$.$ bad. We consider it's good $(1)$ if the rating is $3$ or above, and bad $(0)$ otherwise. Compute the Jaccard distance between firechicken and mike$0702.$ Please answer to three decimal places.