Abstract: A system determines samples of datasets that are typically processed by big data analysis systems. The samples are for use for development and testing of transformations for preprocessing the datasets in preparation for analysis by big data systems. The system receives one or more transform operations input datasets for the transform operations. The system determines samples associated with the transform operations. According to a sampling strategy, the system determines samples that return at least a threshold number of records in the result set obtained by applying a transformation. According to another sampling strategy, the system receives criteria describing the result of the transform operations and determines sample sets that generate result sets satisfying the criteria as a result of applying the transform operations.

Abstract: A system determines samples of datasets that are typically processed by big data analysis systems. The samples are for use for development and testing of transformations for preprocessing the datasets in preparation for analysis by big data systems. The system receives one or more transform operations input datasets for the transform operations. The system determines samples associated with the transform operations. According to a sampling strategy, the system determines samples that return at least a threshold number of records in the result set obtained by applying a transformation. According to another sampling strategy, the system receives criteria describing the result of the transform operations and determines sample sets that generate result sets satisfying the criteria as a result of applying the transform operations.

Abstract: A system and method identifies rows in a file as uniform rows or outlier rows based on statistics from the file, and displays a sampling of uniform and outlier rows.

Abstract: In one embodiment, for each one of one or more content producers, access a content-producing rate at which the content producer produces one or more items of content; and for each one of one or more content consumers, access a content-consuming rate at which the content consumer consumes one or more items of content. For each one of a plurality of consumer-producer pairs, wherein the consumer-producer pair comprises one of the content consumers and one of the content producers, and the content consumer follows the content producer, select between a push strategy and a pull strategy for delivering one or more items of content from the content producer to the content consumer based on the content-consuming rate of the content consumer and the content-producing rate of the content producer.

Abstract: In one embodiment, for each one of one or more content producers, access a content-producing rate at which the content producer produces one or more items of content; and for each one of one or more content consumers, access a content-consuming rate at which the content consumer consumes one or more items of content. For each one of a plurality of consumer-producer pairs, wherein the consumer-producer pair comprises one of the content consumers and one of the content producers, and the content consumer follows the content producer, select between a push strategy and a pull strategy for delivering one or more items of content from the content producer to the content consumer based on the content-consuming rate of the content consumer and the content-producing rate of the content producer.

Abstract: In one embodiment, for each one of one or more content producers, access a content-producing rate at which the content producer produces one or more items of content; and for each one of one or more content consumers, access a content-consuming rate at which the content consumer consumes one or more items of content. For each one of a plurality of consumer-producer pairs, wherein the consumer-producer pair comprises one of the content consumers and one of the content producers, and the content consumer follows the content producer, select between a push strategy and a pull strategy for delivering one or more items of content from the content producer to the content consumer based on the content-consuming rate of the content consumer and the content-producing rate of the content producer.

Abstract: In one embodiment, for each one of one or more content producers, access a content-producing rate at which the content producer produces one or more items of content; and for each one of one or more content consumers, access a content-consuming rate at which the content consumer consumes one or more items of content. For each one of a plurality of consumer-producer pairs, wherein the consumer-producer pair comprises one of the content consumers and one of the content producers, and the content consumer follows the content producer, select between a push strategy and a pull strategy for delivering one or more items of content from the content producer to the content consumer based on the content-consuming rate of the content consumer and the content-producing rate of the content producer.

Abstract: A subscriber to a wireless service provider can make calls in a conventional manner, and can receive calls from a caller in a mode in which the caller rather than the subscriber is charged. More particularly, a request for connection to the subscriber from the caller is received by an administrating server which determines if the call can be charged to the caller and then generates such a charge. Preferably the administrating server is part of a payment platform provided to generate an account for the subscriber to pay for outgoing (and, selectively, incoming) calls.

Abstract: A subscriber to a wireless service provider can make calls in a conventional manner, and can receive calls from a caller in a mode in which the caller rather than the subscriber is charged. More particularly, a request for connection to the subscriber from the caller is received by an administrating server which determines if the call can be charged to the caller and then generates such a charge. Preferably the administrating server is part of a payment platform provided to generate an account for the subscriber to pay for outgoing (and, selectively, incoming) calls.

Abstract: A paging system is arranged to deliver a page from a caller to a subscriber with an optional vocal message being transcribed into a digital message. The identity of the caller and the digital message, if any, are shown on the screen of a pager associated with the subscriber. The subscriber can contact the caller by calling a special number which is not necessarily the same number as the caller's telephone number. The subscriber is then automatically connected to the caller. The cost of the page and the return call can be charged to either the subscriber or the caller.