Mastering NLP with Promptify

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Introduction

Prompt engineering is an essential skill for effectively utilizing large language models (LLMs) such as GPT-3.5 and PaLM. Promptify is a powerful tool that simplifies prompt generation for various Natural Language Processing (NLP) tasks, making it easier to extract structured outputs without the need for extensive training data.

In this guide, we’ll walk through how to use Promptify for key NLP tasks like Named Entity Recognition (NER), binary classification, sentiment analysis, and topic extraction. You’ll learn how to set up Promptify, understand its key features, and apply it in real-world scenarios with just a few lines of Python code.

Setting Up Promptify

Installation

To install Promptify, run the following command:

!pip install promptify

Setting Up the API Key

Since Promptify interacts with generative AI models, you’ll need an API key. In Google Colab, retrieve it using:

from google.colab import userdata
api_key = userdata.get("OPENAI_API_KEY")

Alternatively, if you're using a local environment, store your key as an environment variable:

import os
api_key = os.getenv("OPENAI_API_KEY")

Named Entity Recognition (NER) with Promptify

Named Entity Recognition (NER) extracts structured information from unstructured text. Here’s how Promptify makes NER effortless:

Code Implementation

from promptify import Prompter, OpenAI, Pipeline

sentence = """The patient is a 93-year-old female with a medical history of chronic right hip pain, osteoporosis, hypertension, depression, and chronic atrial fibrillation admitted for evaluation and management of severe nausea and vomiting and urinary tract infection."""

model = OpenAI(api_key)
prompter = Prompter('ner.jinja')
pipe = Pipeline(prompter, model)

result = pipe.fit(sentence, domain="medical", labels=None)
print(result)

Expected Output

The output is a structured JSON-like list of extracted entities:

[
    {"T": "Age", "E": "93-year-old"},
    {"T": "Gender", "E": "female"},
    {"T": "Medical Condition", "E": "chronic right hip pain"},
    {"T": "Medical Condition", "E": "osteoporosis"},
    {"T": "Medical Condition", "E": "hypertension"},
    {"T": "Medical Condition", "E": "depression"},
    {"T": "Medical Condition", "E": "chronic atrial fibrillation"},
    {"T": "Reason for Admission", "E": "evaluation and management of severe nausea and vomiting and urinary tract infection"}
]

Use Cases

• Extracting structured data from medical reports.
• Automating entity recognition in legal or business documents.
• Improving search and indexing capabilities in text-heavy applications.

Binary Classification Using Promptify

Binary classification assigns a label (e.g., positive/negative) to input text. Here’s how Promptify enables this task:

Code Implementation

labels = ['positive', 'negative']
data = [
    {'text': 'This is great', 'label': 'positive'},
    {'text': 'This is awful', 'label': 'negative'}
]
sent = "The patient is a 93-year-old female..."

model_name = "gpt-3.5-turbo"
model = OpenAI(api_key=api_key, model=model_name)

template_string = """
You are a highly intelligent Binary Classification system. Classify the passage as either {{ label_0 }} or {{ label_1 }}. Output format: [{'C':Category}]

Input: {{ text_input }}
Output:
"""

prompter = Prompter(template=template_string, from_string=True)
pipe = Pipeline(prompter, model)
result = pipe.fit(sent, label_0=labels[0], label_1=labels[1], examples=data)

print(result[0])

Expected Output

{"C": "negative"}

Use Cases

• Sentiment classification in customer reviews.
• Spam detection in email filtering.
• Fraud detection in financial transactions.

Sentiment Analysis with Promptify

Sentiment analysis determines whether text conveys a positive or negative sentiment.

Code Implementation

template = """Classify the sentiment of the following text as positive or negative.
Text: {{text_input}}
Sentiment:"""

prompter = Prompter(template, from_string=True)
pipe = Pipeline(prompter, model, structured_output=False)

text = "This movie was amazing! I loved it."
result = pipe.fit(text)

if result:
    print(f"Sentiment: {result[0]}")

Expected Output

Sentiment: Positive

Use Cases

• Analyzing social media sentiment.
• Monitoring brand reputation.
• Enhancing chatbot responses.

Topic Extraction with Promptify

Topic extraction identifies the main subject of a text.

Code Implementation

template = """Extract the main topic from the following text:
Text: {{text_input}}
Topic:"""

prompter = Prompter(template, from_string=True)
pipe = Pipeline(prompter, model, structured_output=False)

text = "The quick brown fox jumps over the lazy dog."
result = pipe.fit(text)

if result:
    print(f"Topic: {result[0]}")

Expected Output

Topic: English Pangram

Use Cases

• Summarizing news articles.
• Categorizing customer feedback.
• Enhancing content recommendations.

Conclusion

Promptify simplifies NLP tasks like NER, classification, sentiment analysis, and topic extraction with minimal code. By leveraging structured prompts, it ensures accurate and formatted outputs, making it ideal for real-world applications in healthcare, finance, marketing, and more.

To explore further, try experimenting with custom templates and additional Promptify features!

Resources

• Promptify GitHub Repository
• OpenAI API Documentation
• Promptify Notebook with Code

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