Abstract: This disclosure relates generally to data processing, and more particularly to a method and system for generating ground truth labels for ambiguous domain specific tasks. The system generates reference data corresponding to a regulation statement being processed, using a crowd sourcing mechanism and then processes the reference data using an Expectation Maximization (EM) model. The EM model determines consensus with respect to ambiguity of terms/phrases, validity of questions, and validity of answers, and then based on the determined consensus, provides questions and answers to disambiguate the regulation statement.

Abstract: This disclosure relates generally to data processing, and more particularly to a method and system for generating ground truth labels for ambiguous domain specific tasks. The system generates reference data corresponding to a regulation statement being processed, using a crowd sourcing mechanism and then processes the reference data using an Expectation Maximization (EM) model. The EM model determines consensus with respect to ambiguity of terms/phrases, validity of questions, and validity of answers, and then based on the determined consensus, provides questions and answers to disambiguate the regulation statement.

Abstract: A method is provided for estimating the header of a data packet in a wireless communication system. The method includes: maintaining a list of data packets received without an error at a receiver; receiving at the receiver a corrupt data packet having errors in its header; computing a likelihood score for the header of the corrupt data packet in relation to each entry in the list of data packets; and selecting an entry having the highest likelihood score as an estimated header for the corrupt data packet.

Abstract: An improved routing scheme is provided for data packets in a network. Upon receiving incoming data packets at an intermediate routing node of the network, the incoming data packets are processed in accordance with a cross-layer protocol. In addition, network coding is applied to the incoming data packets to form a combined data packet which is in turn broadcast over the network.

Abstract: A method is provided for adapting models on the basis of link quality indicators. A plurality of statistical models which predict whether a given data bit in a stream of data bits is in error are first defined, where each model includes an indicator of bit errors in the bit stream used to train the model. The method then includes: receiving a data packet at a receiver in a wireless network; determining an indicator of bit errors for the received data packet; and processing the data packet at the receiver using a model from the plurality of models which correlates to the bit error indicator for the data packet.

Abstract: A method is provided for improving error recovery of corrupt data packets in a wireless communication system. The method includes: receiving a plurality of incoming data packets over a wireless medium at a receiver; capturing an indicator of bit errors for each of the data packets at a layer of the receiver below an application layer; passing the bit error indicator for each of the data packets to the application layer of the receiver; and performing an error recovery operation in relation to a given data packet at the application layer using the bit error indicator associated with the given data packet.

Abstract: A coding system and method employs a Partial Reed Solomon (PRS) code profile of order s having an s-partition on a set of parity symbols and a (s+1)-partition on a set of message symbols. In other aspects, an adaptive forward error correction scheme keeps block length and transmission rate fixed, while changing an underlying code profile based on received feedback information about a probability of erasure p from a channel.

Abstract: A multicast packet video system includes a codec placement module placing codecs in nodes of a multicasting network. In some aspects, the placement includes receiving, at a parent node of the network, feedback from its child nodes indicating a number of the child nodes unable to decode FEC blocks, and placing a codec at the parent node if the number exceeds a threshold. In alternative or additional aspects, the placement includes placing codecs in nodes of a multicasting tree of the network by recursively performing a search of a network topology T to find an optimum node c at which to place a codec in order to obtain a maximum improvement in average video-packet throughput over nodes of the tree as a result of the codec recovering lost video and parity packets and transmitting them downstream.