Using Hugging Face Models with RunPod
Artificial Intelligence (AI) has revolutionized how applications analyze and interact with data. One powerful aspect of AI is sentiment analysis, which allows machines to interpret and categorize emotions expressed in text. In this tutorial, you will learn how to integrate pre-trained Hugging Face models into your RunPod Serverless applications to perform sentiment analysis. By the end of this guide, you will have a fully functional AI-powered sentiment analysis function running in a serverless environment.
Install Required Libraries
To begin, we need to install the necessary Python libraries. Hugging Face’s transformers
library provides state-of-the-art machine learning models, while the torch
library supports these models.
Execute the following command in your terminal to install the required libraries:
This command installs the torch
and transformers
libraries. torch
is used for creating and running models, and transformers
provides pre-trained models.
Import libraries
Next, we need to import the libraries into our Python script. Create a new Python file named sentiment_analysis.py
and include the following import statements:
These imports bring in the runpod
SDK for serverless functions and the pipeline
method from transformers
, which allows us to use pre-trained models.
Load the Model
Loading the model in a function ensures that the model is only loaded once when the worker starts, optimizing the performance of our application. Add the following code to your sentiment_analysis.py
file:
In this function, we use the pipeline
method from transformers
to load a pre-trained sentiment analysis model. The distilbert-base-uncased-finetuned-sst-2-english
model is a distilled version of BERT fine-tuned for sentiment analysis tasks.
Define the Handler Function
We will now define the handler function that will process incoming events and use the model for sentiment analysis. Add the following code to your script:
This function performs the following steps:
- Ensures the model is loaded.
- Retrieves the input text from the incoming event.
- Validates the input to ensure text is provided.
- Uses the loaded model to perform sentiment analysis.
- Returns the sentiment label and score as a dictionary.
Start the Serverless Worker
To run our sentiment analysis function as a serverless worker, we need to start the worker using RunPod’s SDK. Add the following line at the end of your sentiment_analysis.py
file:
This command starts the serverless worker and specifies sentiment_analysis_handler
as the handler function for incoming requests.
Complete Code
Here is the complete code for our sentiment analysis serverless function:
Testing Locally
To test this function locally, create a file named test_input.json
with the following content:
Run the following command in your terminal to test the function:
You should see output similar to the following, indicating that the sentiment analysis function is working correctly:
Conclusion
In this tutorial, you learned how to integrate a pre-trained Hugging Face model into a RunPod serverless function to perform sentiment analysis on text input.
This powerful combination enables you to create advanced AI applications in a serverless environment.
You can extend this concept to use more complex models or perform different types of inference tasks as needed.
In our final lesson, we will explore a more complex AI task: text-to-image generation.