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Generating TV show episode summaries with GPT-2

With the code in this repo, it is possible to scrape IMDb and Wikipedia to acquire a large number of episode summaries for a TV show, and to use the data to train a GPT-2 model to generate similar summaries. Due to the lack of large-scale datasets, the generated summaries are usually far from perfect, but they are grammatically correct thanks to the pre-training of the GPT-2 networks. Also, as expected, they usually quite funny 😁.

Requirements

To code was written/tested using python3 and the following packages:

  • torch 1.3.1
  • Beautifulsoup 4.8.0
  • pytorch_transformers 1.2.0
  • Scrapy 1.8.0

(plus their prerequisites)

How-To

Clone the repo and install the required packages.

Running the Scrapy spiders/crawlers

IMDb spider

Running the IMDb spider is fairly simple. It only takes a set of keywords as input params:

Examples:

  • python3 run_imdb_spider.py --search_keywords friends -o friends_imdb.json
  • python3 run_imdb_spider.py --search_keywords game of thrones -o got_imdb.json
  • python3 run_imdb_spider.py --search_keywords rupaul\'s drag race -o rupauls_drag_race_imdb.json
  • python3 run_imdb_spider.py --search_keywords south park -o south_park_imdb.json
  • python3 run_imdb_spider.py --search_keywords star trek -o star_trek_imdb.json
  • python3 run_imdb_spider.py --search_keywords walker texas ranger -o walker_imdb.json
Wikipedia spider

The Wiki spider is slightly more complicated than the previous one. The user have to provide a starting page for the recursive search in Wikipedia, a string that will be used to filter out URLs (URLs that do not contain the string will be skipped), and a list of keywords to filter out additional pages based the title of the Wikipedia article.

Examples:

  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/Friends --title_keywords friends --url_substring Friends -o friends_wiki.json
  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/Game_of_Thrones --title_keywords game thrones --url_substring Game_of_Thrones -o got_wiki.json
  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/RuPaul\'s_Drag_Race --title_keywords rupaul drag race --url_substring "RuPaul%27s_Drag_Race" -o rupauls_drag_race_wiki.json
  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/South_Park --title_keywords south park --url_substring South_Park -o south_park_wiki.json
  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/Star_Trek --title_keywords star trek --url_substring Star_Trek -o star_trek_wiki.json
  • python3 run_wiki_spider.py --start_url https://en.wikipedia.org/wiki/Walker,_Texas_Ranger --title_keywords walker texas ranger --url_substring Walker,_Texas_Ranger -o walker_wiki.json

In general, it is probably a good idea to choose TV shows or franchises with at least 100-150 episodes, otherwise we might end up with subpar results.

After the spiders are finished, take a quick look into the output JSON files and verify that they contain the right data.

For additional information, check python3 run_imdb_spider -h and python3 run_wiki_spider -h.

Pre-scapred episode data

I ran the spiders for some TV shows to provide an opportunity for users to train a network without running the spiders first. The data can be found in ./scraped_data/.

Training the network

Call the script train.py to train a GPT-2 network.

For example:

python3 train.py -j scraped_data/star_trek_wiki.json scraped_data/star_trek_imdb.json

The script splits the data into a training and validation subset. During the training, there is a checkpoint at every X step. At these checkpoints, the loss on the validation subset is calculated and a few samples are generated for the user to further monitor the progress. The best model from the training is saved during the process.

Multi-GPU training is currently not implemented.

For more information, check python3 train.py -h.

Generating episode summaries from scratch

After you have a trained model, you can generate episodes with:

python3 generate.py --num_samples <NUMBER_OF_SAMPLES_TO_GENERATE> --random_seed <SEED>

If you want to play around with other parameters of the generation process, check python3 generate.py -h.

If you changed the GPT-2 model size (--gpt2_size) from the default 'gpt2' in the training, you will also have to change it for the generation.

Results

Chandler is shocked to discover that Monica thinks that he is "less special" than Chandler despite the fact that he is the best friend. Chandler tries to get over Monica by making up stories about how different each of them is and how they are all just jealous of Ross. Phoebe has a huge party for her friends and she is very stressed but she doesn't want to go to the doctor as she would have to give an enema.
---
When Chandler and Monica accidentally kiss, Chandler develops a crush on her, but he won't tell Monica.
---
At the museum, Phoebe's character is killed, and Monica tells her that Joey used to live with him, but now he hates Ross and Rachel. When Phoebe gets to know Joey more, she finds out about him having feelings for Rachel, so Monica tries to tell Joey to get over Rachel.
---
It's Thanksgiving weekend and the friends are all hanging out with Rachel's parents where she makes out with Ross. The group ends up going to a museum and Rachel and Ross have a great time together and they end up kissing. Rachel's parents want to get a divorce because of this so Rachel has to agree to be divorced and Ross agrees to be Ross' wife in order to get his mom to agree to divorce.
---
Rachel gets a job opening for a new catering company, but her current boss thinks she is too young to compete. Meanwhile, Monica gets a new roommate - Janine, a stripper with an extremely sexy voice.
---
Rachel is jealous that Ross is seeing Janice at the coffee shop, but Rachel's phone picks up her call, so she has to make a call. Meanwhile, Monica gets very drunk in front of Mike and Chandler, but ends up helping them get rid of their new fridge.
---
Chandler's parents want to hire a nanny, so he takes the job and has a lot of fun. Phoebe is having a hard time being accepted at work; she is very attractive, however, but her co-workers hate her. Ross makes an appointment to be with Monica at 10 a.m., when they both go to a restaurant to eat, but they have to get back because they had a date.
---
When Joey and Phoebe go looking for a new roommate, Joey gets a shock when they realize they are not getting along; Monica gets a shock when she learns Rachel was going out with a former Navy SEAL; and Phoebe, when she learns Rachel is not interested in marriage, gets an unexpected shock when she is told Rachel never married.
Tyrion's army is defeated at the Twins. Stannis is defeated at the Twins. Jon Snow takes Stannis prisoners. Daenerys Targaryen plans to conquer Westeros and sends her army to the North.
---
Arya is rescued by the survivors and she tells about the events at the Eyrie. Catelyn is forced to deal with the aftermath of the Great River Crossing incident, which leaves her with a scar that she has to hide from the Lannister family. Jon and the Night's Watch are attacked by Stannis' forces as he makes his escape, and he meets an unexpected visitor. Meanwhile, the Ironborn continue to fight against the Riverlands in the south.
---
Theon has been captured and killed by the Boltons but Sam has escaped. Tyrion advises Margaery about her sister and she agrees to travel to meet her. Jon decides to go with Rickard to the Wall. Daenerys has a discussion with the Seven Kingdoms' governors but they don't seem interested.
---
Bran leaves Castle Black and takes Arya north. Jon is attacked by a group of Wildlings and saves Bran's life by striking a nerve with him. Tyrion decides to take a different route through the wild places to escape. Theon is captured.
---
Cersei asks Jaime to stay in Winterfell with her, but he says Tyrion has other plans and that Sansa must accompany Jaime. Theon returns to King's Landing after being attacked by the wildlings. At the Eyrie, Joffrey and Varys try to get Jorah the Dreadfort ready for a siege.
---
Tyrion is caught by surprise by an unexpected visitor at the Nightfort, his first, and his first since escaping King's Landing. He is surprised by Jaime's presence and he immediately asks for his leave. Jaime refuses. When Tyrion is about to be imprisoned, he is saved by Podrick. Cersei tries to convince Tyrion to accept the pardon but he declines the request. Jaime and Sansa decide to marry and Tyrion marries Margaery.
---
Tyrion, Daenerys, and Rickon meet with the High Sparrow for advice on the future; the Lannister king asks Cersei and her dragons to help him reclaim the Iron Islands; Stannis confronts the Ironborn on the road; the Seven Kingdoms have an uneasy truce.
---
Arya Stark receives news that the Lannister army has defeated and captured the Ironborn. She also finds Joffrey, Tywin and Littlefinger dead. At Castle Black, a few loyal members of the Watch are being murdered by Stannis Baratheon.
The queens have a roast of the week with guest judges Cheryl Fernandez Valentino, RuPaul, and Miss Congeniality. On this episode, they get emotional talking about the moments that made them and the other queens stand out from the crowd.
---
The queens' runway looks are off-limits, as they must perform in an improv comedy act and create a parody of RuPaul's hit song "Queens Everywhere."
---
After the queens compete for their "biggest and best acting gig ever" in a RuPaul's Drag Race parody, RuPaul makes an appearance to give them some advice.
---
The queens discuss who they think should face the music and who might walk away with the crown. RuPaul reveals some shocking backstage knowledge.
---
In the mini challenge, the queens make puppets of two drag queens, portraying them, and drag queens from both sides of the political divide; the other queens are tasked to create their own puppets of each member of the pair.
---
This week's winner, Valentina is announced as the winner of the title of RuPaul's Next Drag Superstar.
---
The queens are tasked by RuPaul to create couture out of materials found at various flea markets, and transform them into something completely different: a "Sizzly Couture Party."
---
The queens work toward an epic mini-challenge: creating iconic runway looks, and acting in a RuPaul musical. Guest Judges: RuPaul and Gaby Hoffmann.
Cartman's dream of becoming a hero leads him to confront the truth behind the evil of the Internet.
---
Randy Marsh is elected to the local town hall and is the only white person there. When a Muslim student at the school comes to school dressed as a Muslim girl in order to protest her teacher's recent statements about Islam, the Muslim student is mistaken to be a Muslim. A Muslim girl named Aisha becomes upset when she finds out that Aisha has a Muslim identity and takes her home to the Muslim world. Meanwhile, Randy Marsh plots revenge and takes action to stop it.
---
Stan decides it would be funny if the boys made an epic quest to find and destroy the Lord of the Rings, and decides to use the boys as a force for good, so he may finally get back to watching the first film for good.
---
Stan and Kyle have a falling out. They have issues that have nothing to do with the kids, and everything to do with how they are being punished for their sins. The boys try to reunite their father, Stan, but he is not there. The two men are stuck in an interminable standoff, and must decide whether or not to break through the two giant barbed-wire fences to reach the fence.
---
After having been arrested for a minor offense, Eric Cartman is sent to prison. Eric, Kyle and Kenny are sent to a juvenile detention center instead of Cartman. Eric attempts to get the boys to get him a job by saying he likes working on a hot tub. But, Stan refuses to do anything for him.
---
The new kid in town is in town and he wants to go to the movie "A Star Is Born", where he gets to suck Kyle's balls and play with his toys. But the problem with the place is that there's a lot of other kids around.
---
A new man in town comes across a copy of the new movie "Funny Little Toasters," starring Kenny and Craig. The town is upset at the movie, however, because there were children killed by it.
---
Cartman's mom has died. He turns the water faucet on to try and stop the inevitable when the kids come back from school.
The Borg, having escaped from their planet, attack Voyager and attempt to use it as a base of operations. Torres and Janeway beam down to a planet where they encounter a Klingon ship, only to find they are being followed by a mysterious alien.
---
When Captain Picard and Data beam back to Earth they find a planet with almost no life and little or no technology. They soon learn that the planet is actually a replica of Earth from the 20th century and the inhabitants of that replica are all slaves.
---
Sisko and a Klingon ambassador are kidnapped by Jem'Hadar rebels in hopes they will join the Dominion War in a war to the last man.
---
Voyager is trapped on a planet that, while being controlled by humans, has become more or less like another Earth planet when the inhabitants died out.
---
Voyager is attacked by Borg space drones. One of the drones is killed, while another attempts to kill the Borg from Voyager but is shot by Chakotay. Voyager is ordered to destroy the drones before they destroy everything on the ship. Meanwhile the Doctor has a dream of his mother, Tuvok.
---
Captain Kirk and his first officer take a shuttle from the holodeck. They find a man named Michael Kirk who has been transported to the holodeck where he is playing a holo-created version of themselves. Michael has the same freckles as them, but he speaks very little English so the two of them have to learn to communicate.
---
Odo is about to marry a woman who is his mother.
---
Kirk and Spock beam down to a planet of genetically enhanced people where the inhabitants have developed a new culture, an advanced technology for space-faring. They take along the Doctor, who is reluctant to be part of such a project, particularly when he sees some of the people in the planet who seem to be more advanced than everyone else in the area, and is troubled when Kirk asks about a race of beings that seem to be very intelligent with the exception of one, who seems to be extremely rude to those around him
Walker and Trivette go undercover with a Mexican drug lord as he tries to get back at the Rangers with an assassination attempt.
---
Walker and Trivette are on their way to an old friend of Trivette's, and a Mexican Mafia leader. The leader of the gang was a drug dealer who tried to kill Walker when he was still in prison. But when Walker is released, the drug dealer is in prison again and the gang leader tells Trivette that they are not going through. He then kidnaps Trivette's friend and the friend is forced to help Trivette. When Walker and Trivette discover that the man who kidnapped the friend and the leader had ties to the Mexican Mafia, he sends them to kill him as well.
---
A man's son is killed by a group of men while they are camping. Walker tracks down the man who murdered his son. Meanwhile, Alex is at a party and is kidnapped by a group of guys. Alex is then held hostage by the group who threaten to kill her.
---
Walker and Trivette make the perilous trek across the desert to stop a group of Mexican outlaws who've kidnapped his son after he's rescued from being beaten by a rival gang. They also learn there's a deadly ring involving a high-ranking Mexican government agent's wife and two children whom the outlaws use to threaten their enemies.
---
Walker and Trivette take an old family friend from his life. The man reveals a secret he was afraid to speak out about before dying. A local politician who had a personal vendetta against Walker's family is also in the room. Walker and Trivette are able to convince him to go into exile.
---
Walker, who has been tracking down the mob boss behind the crime bosses, is in a car accident. He survives but his driver is killed. His partner Walker is taken prisoner to be killed. They get out alive but he is wounded in the head.
---
After a man who helped build a new jail, is killed in a shootout with guards in a failed attempt, Walker and Trivette attempt to bring to justice the man who ordered the attack.
---
Walker helps him escape from the police station. After they return from the hospital, Walker and Trivette are asked to attend a memorial for the woman she helped kill.

Extras

f6ai was kind enough to create a cool website displaying Star Trek episode summaries generated using the code from this repo. Check out https://todays-star-trek.netlify.com/ and the corresponding repo.

Acknowledgments

Some functions and code snippets were copied from https://github.com/huggingface/transformers