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perplexity

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58 Tech
58 Tech
Mar 2, 2020 · Artificial Intelligence

Low-Quality Text Detection Using Unsupervised Language Model Perplexity

This article proposes a method to identify low-quality text in business data by training a large-scale unsupervised language model to compute sentence perplexity, converting the detection problem into a threshold decision, and details model design, challenges, optimizations, and online performance results.

BERTNLPlanguage model
0 likes · 13 min read
Low-Quality Text Detection Using Unsupervised Language Model Perplexity
58 Tech
58 Tech
Feb 20, 2019 · Artificial Intelligence

Building and Deploying Language Models for Text Quality Evaluation and Generation

This article explains the concepts, training pipeline, deployment formats, and practical applications of language models—particularly LSTM‑based models—for evaluating and generating text quality in a real‑world rental listing platform, highlighting data preparation, model training, and online serving techniques.

LSTMTensorFlowdeployment
0 likes · 16 min read
Building and Deploying Language Models for Text Quality Evaluation and Generation
Hulu Beijing
Hulu Beijing
Jan 11, 2018 · Artificial Intelligence

Topic Modeling Explained: pLSA, LDA, and How to Pick the Right Number of Topics

This article introduces the fundamentals of topic modeling, compares the probabilistic latent semantic analysis (pLSA) and latent Dirichlet allocation (LDA) methods, explains their graphical models and inference via EM or Gibbs sampling, and discusses practical strategies for selecting the optimal number of topics using perplexity or hierarchical Dirichlet processes.

LDAmachine learningpLSA
0 likes · 10 min read
Topic Modeling Explained: pLSA, LDA, and How to Pick the Right Number of Topics