Canonical Title Clusters Explained

What Are Canonical Clusters?

Reach Dog organizes product listings into semantic product neighborhoods. Each neighborhood groups listings that are comparable by meaning, rather than relying only on the category label supplied by a merchant.

The commerce map contains 29.6 million of these neighborhoods across more than 360 million product listings.

A neighborhood is not a guarantee that every member is an identical product. Variants, bundles, materials, sizes, and other differences can still matter. The neighborhood provides a market context in which those differences can be reviewed.

What a Neighborhood Can Show

Depending on the product surface, Reach Dog can use a neighborhood to show:

• comparable product listings
• the range and position of observed prices
• buyer and search language connected to the product type
• competitor and complementary listings
• gaps between a merchant’s catalog and the broader market

This structure lets pricing, gap, and similar-product analysis compare products inside a meaningful market context instead of treating a broad category as if every item were interchangeable.

How Merchants Use It

When a product is resolved into a semantic neighborhood, the merchant can inspect the products buyers are likely to compare, the language around that need, and the market evidence available for that group. The neighborhood narrows the question. The merchant still decides whether the comparison is appropriate for the product at hand.