Recommender System

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

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 zephyros. Please answer to three decimal places.

$5$ points