Abstract: An electronic catalog system monitors browsing actions of users to generate user activity data. A data mining component analyzes the user activity data to generate conditional probability data that is presented to users contextually to assist users in selecting items from the electronic catalog. The conditional probability data reflects the frequencies with which users that have performed specific actions, such as viewing a particular item, set of items or web page, or conducting a specific search, have thereafter acquired specific items from the catalog. For example, in one embodiment, when a user selects a first item for viewing in the catalog, the user is notified, for at least one second item, of a frequency with which users who have viewed the first item and then made a purchase have acquired the second item.

Abstract: Tumor necrosis factors and their receptors have proven usefulness in both basic research and as therapeutics. The present invention provides a new human tumor necrosis factor receptor designated as “Ztnfr12.

Abstract: Tumor necrosis factors and their receptors have proven usefulness in both basic research and as therapeutics. The present invention provides a new human tumor necrosis factor receptor designated as “Ztnfr12.

Abstract: Tumor necrosis factors and their receptors have proven usefulness in both basic research and as therapeutics. The present invention provides a new human tumor necrosis factor receptor designated as “Ztnfr12.

Abstract: Tumor necrosis factors and their receptors have proven usefulness in both basic research and as therapeutics. The present invention provides a new human tumor necrosis factor receptor designated as “Ztnfr12.

Abstract: Tumor necrosis factors and their receptors have proven usefulness in both basic research and as therapeutics. The present invention provides a new human tumor necrosis factor receptor designated as “Ztnfr12.

Abstract: A computer-implemented process identifies useful alternative spellings of search strings submitted to a search engine. The process takes into consideration spelling changes made by users, as detected by programmatically analyzing search string submissions of a population of search engine users. In one embodiment, an assessment of whether a second search string represents a useful alternative spelling of a first search string takes into consideration (1) an edit distance between the first and second search strings, and (2) a likelihood that a user who submits the first search string will thereafter submit the second search string, as determined by monitoring and analyzing actions of users.

Abstract: A method and system for producing an item comparison may initially include obtaining data based on user activity that is indicative of an item and other items likely to be comparable to the item, and recording the data for later access. An item comparison may thereafter present an item of interest to the user along with other items identified based on the recorded data. Prior to producing the item comparison, the user may be provided at least one list of potentially comparable items that can be selected for the item comparison, the list including items in the recorded data that are likely to be comparable to the item of interest. The recorded data may be specific to the user or may include data obtained from other users. Data reflecting user activity with an item comparison may be recorded as additional data indicative of comparable items.