🍙 Bab-Al 🍙

AI-based Healthy Eating Habits Management Platform

2024.03.06 ~ 2024.11.29

🔽🔽🔽
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🎀 Architecture

🕹️ Tech Stack

• Core Dependencies

  • spring-boot-starter-data-jpa
  • spring-boot-starter-web
  • spring-boot-starter-test
  • spring-boot-starter-validation
  • lombok

• Database

  • mysql-connector-java:8.0.33

• Security & Authentication

  • spring-boot-starter-security
  • jjwt-api:0.11.5
  • jjwt-impl:0.11.5
  • jjwt-jackson:0.11.5

• API Documentation

  • springdoc-openapi-starter-webmvc-ui:2.0.2

• Email

  • spring-boot-starter-mail

• Entity Management

  • javassist:3.15.0-GA

• External Libraries

  • opencsv:5.9
  • jython-slim:2.7.4rc1

🎭 TroubleShooting

🍽️ Improve accuracy and increase diversity of recommendations

Problem : The content-based filtering algorithm using the cosine similarity comparison previously implemented has a limitation in that the accuracy of recommendations is poor and various recommendations cannot be made.

Solution : Using the recbole framework, recommendations based on the neural graph collaborative filtering (NGCF) model provide recipe items that other users like.

Tech Blog

• Analysis of recommendation system research trends 1 : Previously recommended systems
• Analysis of recommendation system research trends 2 : GNN-based
• Analysis of recommendation system research trends 3 : GNN-model

🐍 Using Python in SpringBoot

Problem : It was complicated to operate multiple servers for backend code and ai code when developed in an on-premises environment.

Solution : Integrating back-end and ai servers, and add a 'jython' dependency to use python in spring boot, a back-end framework.

Tech Blog

• Jython

📜 Requirements Installation

Problem : After I clone the RecBole framework to use in Spring Boot, the torch installation fails while executing the command 'pip install -e. --verbose'.

Solution : The Python version should be between 3.8 and 3.10, the Python and Pip versions must match, and the installed Python should be 64-bit.

Tech Blog

• Could not find a version that satisfies the requirement torch>=1.10.0 (from recbole) (from versions: none)

🦾 Preparations for using AI models

Problem : I tried to train the Recbole dataset, but I kept getting this error despite the torch module. 'ModuleNotFoundError: No module named 'torch''.

Solution : Install CUDA and Nvidia Driver, then reinstall PyTorch compatible with the corresponding CUDA version.

Tech Blog

• error: subprocess-exited-with-error ~ ModuleNotFoundError: No module named 'torch'