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5 Steps to Build Your Own LLM Classification System

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Dave Ebbelaar


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1-Sentence-Summary

Dave Ebbelaar's video details a five-step method to develop a custom LLM classification system for customer support tickets, focusing on automating categorization, ensuring accuracy with structured data models, integrating response mechanisms, and balancing complexity with operational costs to enhance efficiency and customer satisfaction.

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From a system design perspective, it's really important to think about your classification problem, consider where it fits into the business context, and also identify what other types of values, metadata, or keywords you potentially want to extract from the data to overall improve the system.

Key Ideas

  • 📝 The video outlines a method to create an LLM classification system in five steps, using customer care tickets as an example.

  • 🚀 Classification systems are now more accessible, allowing individuals to build them with minimal coding, unlike in the past when machine learning expertise was required.

  • 🎯 Step one emphasizes defining the classification objective within the business context, including accuracy, urgency, sentiment, and extracting key information.

  • 💼 Understanding the business impact of the classification system is crucial, as it can reduce response time, improve customer satisfaction, and increase efficiency.

  • 🔑 The instructor library is a 'secret weapon' for obtaining structured data from large language models, essential for building reliable applications.

  • 📊 Structured data models for classification, sentiment, and urgency are defined using Python's data models or the penic library, with enums ensuring validation against invalid inputs.

  • 🔍 Errors in the classification model are easily interpretable by humans, providing valuable feedback for improving the system.

  • 📈 The system generates actionable metadata, enabling better routing and handling of customer tickets, and can track categories, frequency, and sentiment over time.

  • ⚙️ Providing context and defining categories in the system prompt can influence outcomes, and experimenting with data models is key to improving the system.

  • 💡 Smaller models can handle simple classification tasks, reducing latency and costs, while different models can be used for various tasks within the system.

📃 Video Mini Summary

TL;DR

💨 The video explains how to build an LLM classification system in 5 steps, using customer care tickets as an example.

It covers defining clear objectives (like accuracy, urgency, and sentiment), using the instructor library for structured data, and leveraging Python's data models for validation.

The system integrates everything into a single function, allowing for actionable metadata and analytics. Smaller models can handle simple tasks, reducing costs and latency.

Building an LLM Classification System in Five Steps

📝 The video walks through five steps to create a classification system using LLMs (Large Language Models). The example used is customer care tickets, where the goal is to categorize tickets and extract relevant metadata. The process is simplified, allowing anyone to build such systems with minimal coding.

Classification Systems Are Now Accessible to Everyone

🚀 In the past, building classification systems required machine learning expertise. Now, with tools like OpenAI, anyone can create these systems with just a few lines of code. This shift has made it easier for individuals to build robust classification systems without needing deep technical knowledge.

"Everyone, including you, can build systems like this in a few lines of code."

Defining the Objective: Accuracy, Urgency, and Sentiment

🎯 The first step is to get clear on your objective. For the customer care ticket example, the system needs to classify tickets by category, assess urgency and sentiment, and extract key information for quick resolution. Additionally, the system should provide a confidence score to flag uncertain cases for human review.

Business Impact: Faster Response Times and Better Customer Satisfaction

💼 Understanding the business impact is crucial. A well-designed classification system can reduce response times by routing tickets to the right department, improve customer satisfaction by prioritizing urgent or negative sentiment tickets, and increase efficiency by providing agents with key information upfront.

Instructor Library: The Secret Weapon for Structured Data

🔑 The Instructor Library is described as a "secret weapon" for obtaining structured data from LLMs. It allows developers to easily get structured outputs like JSON, making it easier to integrate LLMs into production systems. This library ensures that the data returned by the model is reliable and structured.

Using Python’s Data Models and Enums for Validation

📊 To ensure that the system only accepts valid inputs, structured data models are defined using Python’s penic library. Enums are used to predefine acceptable categories, urgency levels, and sentiments. If the model returns an invalid category, it throws a validation error, ensuring consistency.

Errors Are Easily Interpretable and Provide Feedback

🔍 Errors in the classification model are easily interpretable by humans. When an invalid input is detected, the system provides clear feedback in natural language. This feedback can be used to improve the system by feeding it back into the LLM for self-correction.

Actionable Metadata for Better Ticket Routing

📈 The system generates actionable metadata, such as ticket category, urgency, sentiment, and key information. This metadata can be used to route tickets more effectively and track trends over time. For example, urgent or angry tickets can be routed directly to senior staff.

Optimizing Prompts and Experimenting with Data Models

⚙️ Optimizing prompts is key to improving the system’s performance. By providing more context in the prompt—such as defining what constitutes "urgent" or "angry"—the system can produce more accurate results. Experimenting with different data models also allows for extracting more or less information as needed.

Smaller Models Can Handle Simple Tasks

💡 For simple classification tasks, smaller models like GPT-3.5 Turbo can be used instead of more powerful models like GPT-4. This reduces latency and costs while still providing accurate results for basic tasks. Different models can be used for different parts of the system depending on complexity.

"Smaller models are generally very capable of handling simple classification tasks."

Conclusion

🌚 By following these steps, you can automate routine classifications, improve customer service efficiency, and extract valuable insights like sentiment and urgency.

The system is flexible, allowing for different models depending on the task, and can be expanded with more data models and validations.

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