Imported from jeremylongshore/tons-of-skills-marketplace (skills/.curated/building-recommendation-systems/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill building-recommendation-systems. Copyright stays with the author (MIT).

Recommendation Engine

Build recommendation systems using collaborative filtering, content-based filtering, or hybrid approaches tailored to specific datasets and use cases.

Overview

design and implement recommendation systems tailored to specific datasets and use cases. It automates the process of selecting appropriate algorithms, preprocessing data, training models, and evaluating performance, ultimately providing users with a functional recommendation engine.

How It Works

1. Analyzing Requirements: Claude identifies the type of recommendation needed (collaborative, content-based, hybrid), data availability, and performance goals.
2. Generating Code: Claude generates Python code using relevant libraries (e.g., scikit-learn, TensorFlow, PyTorch) to build the recommendation model. This includes data loading, preprocessing, model training, and evaluation.
3. Implementing Best Practices: The code incorporates best practices for recommendation system development, such as handling cold starts, addressing scalability, and mitigating bias.

When to Use This Skill

This skill activates when you need to:

• Build a personalized movie recommendation system.
• Create a product recommendation engine for an e-commerce platform.
• Implement a content recommendation system for a news website.

Examples

Example 1: Personalized Movie Recommendations

User request: "Build a movie recommendation system using collaborative filtering."

The skill will:

1. Generate code to load and preprocess movie rating data.
2. Implement a collaborative filtering algorithm (e.g., matrix factorization) to predict user preferences.

Example 2: E-commerce Product Recommendations

User request: "Create a product recommendation engine for an online store, using content-based filtering."

The skill will:

1. Generate code to extract features from product descriptions and user purchase history.
2. Implement a content-based filtering algorithm to recommend similar products.

Best Practices

• Data Preprocessing: Ensure data is properly cleaned and formatted before training the recommendation model.
• Model Evaluation: Use appropriate metrics (e.g., precision, recall, NDCG) to evaluate the performance of the recommendation system.
• Scalability: Design the recommendation system to handle large datasets and user bases efficiently.

Integration

This skill can be integrated with other Claude Code plugins to access data sources, deploy models, and monitor performance. For example, it can use data analysis plugins to extract features from raw data and deployment plugins to deploy the recommendation system to a production environment.

Prerequisites

• Appropriate file access permissions
• Required dependencies installed

Instructions

1. Invoke this skill when the trigger conditions are met
2. Provide necessary context and parameters
3. Review the generated output
4. Apply modifications as needed

Output

The skill produces structured output relevant to the task.

Error Handling

• Invalid input: Prompts for correction
• Missing dependencies: Lists required components
• Permission errors: Suggests remediation steps

Resources

• Project documentation
• Related skills and commands