Patent ID: 8255523

Claim:
A computer-implemented method, comprising: receiving at an analytics data processing apparatus tracking data communications for a single property, the single property including a plurality of sub-properties, each sub-property being associated with a respective account identifier identifying a tracking account, and each tracking data communication including: an account identifier identifying a tracking account; a visitor identifier identifying a visitor to a sub-property associated with the tracking account; an event time; and one or more coupled event statistics, the coupled event statistics being event statistics for at least two of the sub-properties coupled at a single property level that corresponds to the single property; identifying at the analytics data processing apparatus account identifier and visitor identifier pairs from the account identifiers and visitor identifiers in the tracking data communications; and for each account identifier and visitor identifier pair: ordering at the analytics data processing apparatus the coupled event statistics by the corresponding event times in the tracking data communications corresponding to the account identifier and visitor identifier pair; deriving decoupled event statistics from the coupled event statistics ordered by the event times, the decoupled event statistics including statistics for only the sub-property associated with the account identifier; and identifying a plurality of sessions from the decoupled event statistics, each session being an association of decoupled event statistics that meet a session criterion; and wherein the coupled event statistics include referrer data specifying a referrer in the tracking data communication, and wherein deriving decoupled event statistics comprises propagating referrer data specifying a first referrer in a first tracking data communication for a first visitor identifier and a first account identifier to a subsequent second tracking data communication for the first visitor identifier and the first account identifier associated with a first session; and wherein propagating the referrer data comprises propagating the referrer data only in response to determining that the subsequent second tracking data includes referrer data specifying a direct referral to the sub-property associated with the first account identifier.