Abstract: A gas infusion tank for a beverage machine includes a tank body defining a holding space for accommodating beverages. A mixing element includes a mixing chamber, an ascending pipe, and a descending pipe. A top of the ascending pipe is fluidly connected to the mixing chamber and a bottom of the ascending pipe has a liquid inlet. The liquid inlet is fluidly connected to the holding space. A top of the descending pipe is fluidly connected to the mixing chamber and a bottom of the descending pipe includes a liquid outlet in fluid communication with the nozzle. A gas intake hole connects the holding space with the mixing chamber.

Abstract: A method, system, and computer program product for determining customer migration: obtain first feature data for a plurality of users associated with a first time period; segment the plurality of users into a plurality of groups based on the first feature data; identify a center point of each group based on the feature data; obtain second feature data for one or more users of the plurality of users associated with a second time period; determine a distance between the one or more users and each center point of each group based on the second feature data; and assign the one or more users to a group of the plurality of groups based on the distance between the one or more users and each center point of each group.

Abstract: Provided is a computer-implemented method for linking datasets using at least two keys, including matching a second key of a first dataset with a second key of a second dataset to identify a plurality of matching records, linking the plurality of matching records from the first dataset and the second dataset, matching the first key of the first dataset with the first key of the second dataset to identify a second plurality of matching records, and linking the second plurality of matching records from the first dataset and the second dataset.

Abstract: A method, system, and computer program product for determining customer migration obtain first feature data for a plurality of users associated with a first time period; segment the plurality of users into a plurality of groups based on the first feature data; identify a center point of each group based on the feature data; obtain second feature data for one or more users of the plurality of users associated with a second time period; determine a distance between the one or more users and each center point of each group based on the second feature data; and assign the one or more users to a group of the plurality of groups based on the distance between the one or more users and each center point of each group.

Abstract: Provided is a computer-implemented method for linking datasets using at least two keys, including matching a second key of a first dataset with a second key of a second dataset to identify a plurality of matching records, linking the plurality of matching records from the first dataset and the second dataset, matching the first key of the first dataset with the first key of the second dataset to identify a second plurality of matching records, and linking the second plurality of matching records from the first dataset and the second dataset.