Abstract: Techniques are described herein for intelligently identifying and creating user segments based on public data attributes in addition to user data attributes. In certain embodiments, a data analytics platform is disclosed that receives user data associated with users and public event streams from public data sources. The data analytics platform selects a set of public event categories associated with the public event streams to display in a segment builder application for generating user segments associated with the users. The data analytics platform outputs the set of public event categories and the user data associated with the users to enable a user of the segment builder application to generate the user segments based on the user data and the set of one or more public event categories.

Abstract: An automatic liquid transfer system includes a horizontally translatable table and a vertically translatable set of pipettes. The table accommodates a titer tray having a multiplicity of receptacles to be filled, or holding liquid samples to be diluted, and a rack housing plural rows of disposable tips. During each cycle in a serial dilution process, a fresh set of tips are picked up by the pipettes and used to transfer liquid in a sterile manner from a sample or diluent source to a row of wells in the titer tray, or from one row to a succeeding row of wells where it is mixed with diluent. Thereafter, the tips are discharged back into the rack to maintain sterile conditions during the process. A sensor is provided on the machine to detect whether all of the tips in each set are disengaged and another set successfully picked up.