At a Glance

Name: Explainable AI Meets GenAI: Interact with Decision Trees
Price: Free CAD
Rating: 3.0 (2 reviews)
Author: joseph_santarcangelo, hailey_quach, ricky_shi

Build an explainable (XAI) decision tree classifier with LLM-powered explanations for income prediction. This hands-on project focuses on enhancing interpretability of decision tree classifiers by generating human-readable explanations via an LLM-powered chatbot. Ideal for data scientists working on explainable AI (XAI), this tutorial emphasizes model transparency, user trust, and actionable insights. By the end, you'll improve your skills in building interpretable models, leveraging NLP-driven explanations, and creating real-time AI solutions for practical decision-making.

Project summary

Imagine you're a data scientist assigned to build a machine learning model to classify income levels. After countless hours of fine-tuning, your decision tree model achieves impressive accuracy, and you’re feeling accomplished. But during the stakeholder meeting, things take a turn. Your managers and clients, intrigued by the predictions, ask how the model arrives at its conclusions. As you dive into technical explanations about splits, nodes, and thresholds, their faces glaze over. You realize that while the model works, its complexity creates a wall between its results and the people who need to trust and act on them.

Determined to bridge this gap, you decide to take a new approach: making the model's outputs more transparent. By converting its predictions into simple, human-readable explanations and integrating them into a chatbot powered by a large language model, you enable stakeholders to ask questions, explore insights, and dynamically interact with the model. Suddenly, the black box becomes an open book—instilling trust, improving decision-making, and delivering real value. This journey is about building not just models but trust through explainable AI (XAI).

This project focuses on analyzing a decision tree classifier trained on the Adult dataset to classify individuals based on socio-economic and demographic features such as age, education, marital status, and income levels. The objective is to enhance the interpretability of the decision tree model by converting its outputs into natural language and integrating it with an interactive chatbot for explanation and insights.

Tools and libraries

scikit-learn: For training the decision tree classifier and evaluating its performance.
pandas: For data manipulation and preprocessing.
matplotlib: For visualizing the decision tree and feature distributions.
TreeSplanerClassifier: A custom library to convert decision tree outputs into natural language.
LangChain: For building a chatbot interface to analyze and explain the tree's outputs interactively.
numpy: For efficient numerical data handling.
seaborn (optional): For enhanced visualizations.

Applications of the project

Explainable AI: Provide human-readable explanations for predictions to make machine learning models accessible to non-technical users.
Interactive insights: Use a chatbot to answer questions about the decision tree model, feature importance, and predictions.
Decision support: Help stakeholders understand model predictions and identify actionable steps, such as improving income classifications or feature optimization.
Data analysis: Explore and interpret patterns in the Adult dataset using advanced natural language-based insights

What you’ll build

Over the course of this project, you’ll:

Train a decision tree classifier: Use the Adult dataset to classify individuals based on socio-economic and demographic factors.
Generate human-readable explanations: Convert model outputs into intuitive natural language using advanced NLP techniques.
Develop an interactive chatbot: Build a chatbot powered by a large language model (LLM) to deliver real-time explanations and insights.

By the end of the project

You’ll have:

A fully functional explainable AI solution combining machine learning with advanced NLP.
Hands-on experience integrating decision tree models with interactive LLM-based chatbots.
A scalable framework for building transparent AI solutions that improve trust and usability.

What you’ll need

Basic Python & GenAI Knowledge: Familiarity with Python, machine learning and generative AI concepts.
Web Browser: Chrome, Edge, Firefox, or Safari for running Skills Network's lab environment.

Offered By: IBMSkillsNetwork

Explainable AI Meets GenAI: Interact with Decision Trees