Abstract: Described is a system, a method, and a computer-implemented apparatus for increasing computational efficiency and capacity of data stream processing systems. In one embodiment, executor grouping reduces cross-socket communication in a Non-Uniform Memory Access (NUMA) system. In another embodiment, input batching reduces thread context switches which improves instruction cache performance.

Abstract: Described is a system, a method, and a computer-implemented apparatus for increasing computational efficiency and capacity of data stream processing systems. In one embodiment, executor grouping reduces cross-socket communication in a Non-Uniform Memory Access (NUMA) system. In another embodiment, input batching reduces thread context switches which improves instruction cache performance.

Abstract: A network of environmental sensor nodes is proposed in which data is transmitted wirelessly between the nodes using a rateless erasure code with a redundancy which is matched to the effective data rate, thereby permitting distanceless link transmissions. The wireless sensor networks is suitable to be sparsely deployed over wide area. A communication protocol is proposed to efficiently coordinate the distanceless link transmissions. A new metric (expected distanceless transmission time) is proposed for routing selection. The distanceless transmissions are well-adapted to low duty-cycled sensor networks.

Abstract: Jumbo query plans are generated by applying at least one sharing technique and combining at least two of the pattern queries. Costs of the jumbo query plans may then be estimated and used to search for an optimal query plan. The optimal query plan may then be executed on an input data stream to generate an output data stream.

Abstract: Disclosed herein are technologies for facilitating optimization of pattern queries. In accordance with one aspect, jumbo query plans are generated by applying at least one sharing technique and combining at least two of the pattern queries. Costs of the jumbo query plans may then be estimated and used to search for an optimal query plan. The optimal query plan may then be executed on an input data stream to generate an output data stream.

Abstract: A network of environmental sensor nodes is proposed in which data is transmitted wirelessly between the nodes using a rateless erasure code with a redundancy which is matched to the effective data rate, thereby permitting distanceless link transmissions. The wireless sensor networks is suitable to be sparsely deployed over wide area. A communication protocol is proposed to efficiently coordinate the distanceless link transmissions. A new metric (expected distanceless transmission time) is proposed for routing selection. The distanceless transmissions are well-adapted to low duty-cycled sensor networks.