# How Groupon Automatically Categorizes Merchant Services Using Text Analysis

> A system that automatically scans merchant websites and uses high-precision search queries to label their services, helping platforms like Groupon organize thousands of business listings.

- **Patent:** US 9330167
- **Original title:** Method, apparatus, and computer program product for classification and tagging of textual data
- **Owner:** Groupon Inc
- **Granted:** 2016
- **Status:** Active
- **Times cited:** 25
- **Field:** software, ai_ml, ecommerce

## What it does

This patent describes a way to teach a computer how to read a merchant's website and figure out what service they offer, such as 'spa' or 'auto repair.' It works by first looking at a large collection of known documents to build search queries that are highly accurate, measured by a precision score. The system calculates this score by dividing the number of 'true positive' results by the total number of results found. Once these high-quality queries are refined, the system applies them to new, unlabeled text from a merchant's site to automatically assign the correct category label.

## What it does NOT cover

- Does not cover general-purpose search engines that do not use a specific precision-threshold-based query selection process.
- Does not cover manual tagging or human-in-the-loop classification systems.
- Does not cover machine learning models that classify text without using the specific feature-index-pair and distance-measure query generation method described.
- Does not cover image-based merchant classification.

## The clever bit

The system generates queries based on 'feature index pairs'—tracking not just the words, but their specific positions in a sentence—and then filters those queries by a precision threshold to ensure only the most reliable indicators are used for classification.

## Real-world examples

1. Automated categorization of local business listings on Groupon
2. Internal merchant classification tools for daily deal platforms
3. Automated tagging of unstructured web content for recommendation engines

## Why it matters

For companies like Groupon that aggregate thousands of local deals, manually categorizing every merchant is impossible. This technology allowed them to scale their marketplace by automating the classification of unstructured text found on merchant websites, ensuring that a user searching for 'massage' actually finds relevant spa deals.

## Frequently asked questions

### What does How Groupon Automatically Categorizes Merchant Services Using Text Analysis cover?

A system that automatically scans merchant websites and uses high-precision search queries to label their services, helping platforms like Groupon organize thousands of business listings.

### Who owns patent US 9330167?

Groupon Inc owns this patent, granted in 2016.

### When does this patent expire?

This patent is expected to expire on May 3, 2036, when the invention enters the public domain.

### What is patent US 9330167 cited by?

This patent has been cited by 25 later patents that build on its ideas.

### What problem does this patent solve?

For companies like Groupon that aggregate thousands of local deals, manually categorizing every merchant is impossible. This technology allowed them to scale their marketplace by automating the classification of unstructured text found on merchant websites, ensuring that a user searching for 'massage' actually finds relevant spa deals.

### What does this patent NOT cover?

Does not cover general-purpose search engines that do not use a specific precision-threshold-based query selection process.

**Full plain-English explainer:** https://patentbrief.org/patent/us/9330167/amazon-rds

**Original patent:** https://patents.google.com/patent/US9330167

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_Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._