Abstract: Techniques to operate an experiment (online) over a computer network comprised of computing devices. The experiment may consist of a series of tests on experiment variants of a software application running on the computing devices of which each variant refers to a particular application version or implementation. These techniques may be configured into hardware operative to run such tests over the computer network by selecting one group or multiple groups of computing devices. Other embodiments are described and claimed.

Abstract: Systems, methods, and computer media for efficiently processing user log data are provided. The log data is progressively processed in variable sized windows based on a specified time period. The log data may be anonymized to protect user privacy. A log server processes the windowed log data in phases. The first phase includes fast data like page view log data. Subsequent phases include slow data like session data which may build on the page view data processed in the first phase. The log server identifies metrics based on the log data processed at each phase. Based on the identified metrics, the log server may identify interests across a community of users or for specific users.