Towards the Topmost: A Topic Modeling System Tookit
Project description
TopMost provides complete lifecycles of topic modeling, including datasets, preprocessing, models, training, and evaluations. It covers the most popular topic modeling scenarios, like basic, dynamic, hierarchical, and cross-lingual topic modeling.
Overview
TopMost offers the following topic modeling scenarios with models, evaluation metrics, and datasets:
Scenario |
Model |
Evaluation Metric |
Datasets |
---|---|---|---|
Basic Topic Modeling
|
TC
TD
Clustering
Classification
|
20NG
IMDB
NeurIPS
ACL
NYT
Wikitext-103
|
|
Hierarchical
Topic Modeling
|
TC over levels
TD over levels
Clustering over levels
Classification over levels
|
20NG
IMDB
NeurIPS
ACL
NYT
Wikitext-103
|
|
Dynamic
Topic Modeling
|
TC over time slices
TD over time slices
Clustering
Classification
|
NeurIPS
ACL
NYT
|
|
Cross-lingual
Topic Modeling
|
TC (CNPMI)
TD over languages
Classification (Intra and Cross-lingual)
|
ECNews
Amazon
Review Rakuten
|
Quick Start
Install TopMost
Install topmost with pip as
$ pip install topmost
Discover topics from your own datasets
We can get the top words of discovered topics, topic_top_words` and the topic distributions of documents, doc_topic_dist. The preprocessing steps are configurable. See our documentations.
import topmost
from topmost.preprocessing import Preprocessing
# Your own documents
docs = [
"This is a document about space, including words like space, satellite, launch, orbit.",
"This is a document about Microsoft Windows, including words like windows, files, dos.",
# more documents...
]
device = 'cuda' # or 'cpu'
preprocessing = Preprocessing()
dataset = topmost.data.RawDatasetHandler(docs, preprocessing, device=device, as_tensor=True)
model = topmost.models.ProdLDA(dataset.vocab_size, num_topics=2)
model = model.to(device)
trainer = topmost.trainers.BasicTrainer(model)
topic_top_words, doc_topic_dist = trainer.fit_transform(dataset, num_top_words=15, verbose=False)
Usage
Download a preprocessed dataset
import topmost
from topmost.data import download_dataset
download_dataset('20NG', cache_path='./datasets')
Train a model
device = "cuda" # or "cpu"
# load a preprocessed dataset
dataset = topmost.data.BasicDatasetHandler("./datasets/20NG", device=device, read_labels=True, as_tensor=True)
# create a model
model = topmost.models.ProdLDA(dataset.vocab_size)
model = model.to(device)
# create a trainer
trainer = topmost.trainers.BasicTrainer(model)
# train the model
trainer.train(dataset)
Evaluate
# get theta (doc-topic distributions)
train_theta, test_theta = trainer.export_theta(dataset)
# get top words of topics
topic_top_words = trainer.export_top_words(dataset.vocab)
# evaluate topic diversity
TD = topmost.evaluations.compute_topic_diversity(top_words)
# evaluate clustering
clustering_results = topmost.evaluations.evaluate_clustering(test_theta, dataset.test_labels)
# evaluate classification
classification_results = topmost.evaluations.evaluate_classification(train_theta, test_theta, dataset.train_labels, dataset.test_labels)
Test new documents
import torch
from topmost.preprocessing import Preprocessing
new_docs = [
"This is a new document about space, including words like space, satellite, launch, orbit.",
"This is a new document about Microsoft Windows, including words like windows, files, dos."
]
parsed_new_docs, new_bow = preprocessing.parse(new_docs, vocab=dataset.vocab)
new_doc_topic_dist = trainer.test(torch.as_tensor(new_bow, device=device).float())
Installation
Stable release
To install TopMost, run this command in your terminal:
$ pip install topmost
This is the preferred method to install TopMost, as it will always install the most recent stable release.
From sources
The sources for TopMost can be downloaded from the Github repository. You can clone the public repository by
$ git clone https://github.com/BobXWu/TopMost.git
Then install the TopMost by
$ python setup.py install
Tutorials
We provide tutorials for different usages:
Name |
Link |
---|---|
Quickstart |
|
How to preprocess datasets |
|
How to train and evaluate a basic topic model |
|
How to train and evaluate a hierarchical topic model |
|
How to train and evaluate a dynamic topic model |
|
How to train and evaluate a cross-lingual topic model |
Notice
Differences from original implementations
Oringal implementations may use different optimizer settings. For simplicity and brevity, our package by default uses the same setting for different models.
Disclaimer
This library includes some datasets for demonstration. If you are a dataset owner who wants to exclude your dataset from this library, please contact Xiaobao Wu.
Contributors
How to cite our work
If you want to use our toolkit, please cite as
@article{wu2023topmost, title={Towards the TopMost: A Topic Modeling System Toolkit}, author={Wu, Xiaobao and Pan, Fengjun and Luu, Anh Tuan}, journal={arXiv preprint arXiv:2309.06908}, year={2023} } @article{wu2023survey, title={A Survey on Neural Topic Models: Methods, Applications, and Challenges}, author={Wu, Xiaobao and Nguyen, Thong and Luu, Anh Tuan}, journal={Artificial Intelligence Review}, url={https://doi.org/10.1007/s10462-023-10661-7}, year={2024}, publisher={Springer} }
Acknowledgments
If you want to add any models to this package, we welcome your pull requests.
If you encounter any problem, please either directly contact Xiaobao Wu or leave an issue in the GitHub repo.
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