Abstract: Devices and techniques are generally described for sample size prediction for online activity. In various examples, first data related to a first sample of users interacting with an online service during a first time period may be received. In some cases, first key performance indicator (KPI) data related to the first sample of users' interaction with the online service may be received. A predicted sample size of users that will interact with the online service for a second time period following the first time period may be predicted. A predicted statistical power may be determined using the predicted sample size. In some examples, a minimum amount of time to route traffic to the online service may be determined based at least in part on the predicted statistical power.

Abstract: The present disclosure generally relates to systems and methods for generating termination notification of an experiment to be presented through a user interface. In some implementation examples, a termination notification system generates a probability value that is valid as of a time period of an experiment at a predetermined point in time based on at least data sample obtained during the time period, predicted sample sizes of each time period of the experiment, or probability values generated prior to the time period. Responsive to determining that the probability value that is valid as of the time period satisfies a threshold value, the termination notification system causes the user interface to present the termination notification that, when selected, causes the experiment to terminate prior to completion of a predicted duration of the experiment.

Abstract: A 3D metal printing machine or apparatus includes a welder that deposits one or more layers of metal, and a powered cutting tool that may be utilized to remove a portion of the metal deposited by the welder after the metal has solidified. Numerous layers of metal can be deposited and machined to form complex 3D metal parts. During fabrication, a part may be formed on a support whereby the part can be fabricated by welding and machining operations without removing the part from the support. A 3D CAD model of a part may be utilized to generate code that controls the 3D metal printing apparatus. A measuring device such as a probe or laser scanner may be utilized to measure the shape/size of parts in the 3D metal printing machine.

Abstract: A 3D metal printing machine or apparatus includes a welder that deposits one or more layers of metal, and a powered cutting tool that may be utilized to remove a portion of the metal deposited by the welder after the metal has solidified. Numerous layers of metal can be deposited and machined to form complex 3D metal parts. During fabrication, a part may be formed on a support whereby the part can be fabricated by welding and machining operations without removing the part from the support. A 3D CAD model of a part may be utilized to generate code that controls the 3D metal printing apparatus. A measuring device such as a probe or laser scanner may be utilized to measure the shape/size of parts in the 3D metal printing machine.