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Overview
The assignment is sub-divided under the following headings:
- Part 0: Survey and Consent Form
- Part 1: Checkpoint: Pathfinder
- You will write a program to play (and win) the generalized Kevin Bacon trivia game. Your program will take as input ANY two actors/actresses and find the shortest sequence of shared movies between them. Part of this program (unweighted shortest path) is due at the checkpoint deadline.
- Part 2: Final Submission: Pathfinder (Complete) + Actor Connections — Deadline: Monday, November 28
- In addition to completing the weighted shortest path version of Pathfinder, you will write a program that starts with one actor in the graph and adds new movies step-by-step to find the earliest movie year to connect the start actor to the destination actor.
- Part 3: Final Submission: Additional Extension – Deadline: Monday, November 28
- You will write a program that will compute some other interesting statistic or action on a different graph of your choosing. Particularly complex extensions will earn a star point
Abstract
You will explore the “Six Degrees of Kevin Bacon” game. Specifically, you will design and implement the data structures and algorithms necessary to explore degrees of separation between Hollywood actors that act in the same movies. The main focus of this assignment is to design and implement efficient graph-based data structures and use them to explore large graphs.
What is the “Six Degrees of Kevin Bacon” game?
“Six Degrees of Kevin Bacon” is a parlor game based on the “six degrees of separation” concept, which posits that any two people on Earth are six or fewer acquaintance-links apart. That idea eventually morphed into this parlor game wherein movie buffs challenge each other to find the shortest path between an arbitrary actor and prolific Hollywood actor Kevin Bacon. It rests on the assumption that any individual involved in the Hollywood, California, film industry can be linked through his or her film roles to Kevin Bacon within six steps. The game requires a group of players to try to connect any such individual to Kevin Bacon as quickly as possible and in as few links as possible. It can also be described as a trivia game based on the concept of the small world phenomenon.
Link coming up Soon!!
Part 1: Checkpoint: Pathfinder (Unweighted)
We have provided you a tab-separated file movie_casts.tsv that contains the majority of actors/actresses found in IMDb and the movies they have played in. Specifically, the file looks like this (“TAB” denotes a single tab character):
Actor/Actresslt;TABgt;Movielt;TABgt;Year 50 CENTlt;TABgt;BEEFlt;TABgt;2003 50 CENTlt;TABgt;BEFORE I SELF DESTRUCTlt;TABgt;2009 50 CENTlt;TABgt;THE MC: WHY WE DO ITlt;TABgt;2005 50 CENTlt;TABgt;CAUGHT IN THE CROSSFIRElt;TABgt;2010 50 CENTlt;TABgt;THE FROZEN GROUNDlt;TABgt;2013 50 CENTlt;TABgt;BEEF IIIlt;TABgt;2005 50 CENTlt;TABgt;LAST VEGASlt;TABgt;2013 50 CENTlt;TABgt;GUNlt;TABgt;2010 ...
The first column contains the name of the actor/actress, the second column contains the name of a movie they played in, and the last column contains the year the movie was made. Each line defines a single actor→movie relationship in this manner (except for the first line, which is the header). You may assume that actor→movie relationships will be grouped by actor name, but do not assume they will be sorted.
Note that multiple movies made in different years can have the same name, so use movie year as well as title when checking if two are the same. Also note that some actors have a “(I)” appended to their name - so “Kevin Bacon” is really “Kevin Bacon (I)”. Make sure you DO NOT format the names of actors or movies beyond what is given in the tab-separated input file. In other words, each actor’s name should be taken exactly as the actor’s name appears in the movie_casts.tsv file: you do not have to (and should not) mess with it. During grading, the actor’s name in the test file will match the actor’s name in the movie_casts.tsv file.
In your graph, each actor/actress will define a single node. Two nodes (i.e., actors) will be connected by an undirected edge if the corresponding actors played in the same movie.
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For detailed instructions look at the ppt.
We are giving very specific instructions on how to format your programs’ output because our auto-grader will parse your output in these formats, and any deviation from these exact formats will cause the autograder to take off points. There will be no special attention given to submissions that do not output results in the correct format. Although we will still give partial credit to the correctness of your results, if you do not follow the exact formatting described here, you are at risk of losing all the points for that portion of the assignment. NO EXCEPTIONS.