Patent attributes
Techniques for determining a metric for an item that represents a condition of the item are described herein. For example, a request for a metric determination for an item may be received where the request is associated with a user identifier. Browsing history information and purchase history information from a website may be obtained based at least in part on the user identifier. The browsing history information and the purchase history information may be filtered to obtain a data set based at least in part on a plurality of item categories associated with items included in the browsing history information and the purchase history information. A metric for the item may be determined based at least in part on the data set and a base metric for the item.