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The conversational AI chatbot app using a pre-trained OpenAI GPT-2

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Conversational AI for Education

The conversational AI chatbot app using pre-trained OpenAI GPT-2 model for beginners who want to learn English. I mainly used Hugging Face's training code which used transfer Learning from an OpenAI GPT and GPT-2 Transformer language model.

Demo

  • Full demo video [ link ]
  • Final Report [ link ]

Chat with Voice Recognition

Situation: Currency Exchange

You can see the result of Similarity and Correct. Similarity means whether you speak well according to the situation. Correct means how much you talk with grammar.


AFL

AFL can check Similarity and Correct.


Quiz

You can easily review the textbook by solving it.

Introduction

Project Process

Dataset

ConvAI2 Data

Project Data

Models

Conversational AI

  • Open AI GPT
  • Open AI GPT2

AFL

AFL stands for Assessment For Learning. This word to refer to a way of evaluating users on an achievement basis, away from traditional learning evaluation methods.

Therefore, the project aimed to score user evaluations for continuous learning and motivation using MRPC, CoLA dataset, and Spell Check API.

  • MRPC (Microsoft Research Paraphrase Corpus)
  • CoLA (Corpus of Linguistic Acceptability)
  • Bing Spell Check API 

Fine-tuning

  • AI Hub Korean-English translation corpus was used for fine tuning. [ link ]
  • Plus, We add the situation data made by English text book.

Parameter Optimization

Argument Default value Modified Value Description
Model Open AI GPT GPT2 Open AI GPT, GPT2
Num_candidates 2 6 candidate group for Next Utterance
Max_history 4 2 Number of previous utterances to keep in history
Gradient_accumulation_steps 8 4 Used to troubleshoot memory problems on GPU during Optimization
Epochs 1 30 Number of Epochs
Train_batch_size 4 2 Batch size for training
Valid_batch_size 4 2 Batch size for validation

Evaluation

Reference

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The conversational AI chatbot app using a pre-trained OpenAI GPT-2

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