Abstract: A method for a protocol in digital asset trading includes step as follow. Trading information is exchanged between the first and the second nodes, in which a first digital currency belonging to the first node and a second digital currency belonging to the second node are expected to be exchanged, and prices of the first and second digital currencies are time-dependent. An atomic swap script and a smart contract are generated. A compensation fee to be paid to the second node by the first node is computed. A redeeming or refunding event is performed in response to the atomic swap script and the smart contract with paying the compensation fee to the second node, in which the compensation fee is dependent on the prices of the first and second digital currencies such that is time-dependent.

Abstract: Described is a computing system comprising: a quantum computer comprising a quantum computer controller; and one or more quantum processors; and a classical computer comprising: a memory storing machine-readable instructions; and a processor for executing the machine-readable instructions. When the processor executes the machine-readable instructions, it configures the classical computer to model a physical system; and to implement the steps in said computing system of: transforming a plurality of non-linear equations into differential equations whose non-linear terms are defined by polynomials; encoding the polynomials as probability amplitudes of a quantum state of a quantum system; evolving the quantum system into a new quantum system comprising message qubits and at least one ancilla qubit; and utilizing a quantum iterative optimization algorithm to solve the plurality of differential equations.

Abstract: The present disclosure describes methods, devices, and non-transitory computer readable storage medium for recognizing a human action using a graph convolutional network (GCN). The method includes obtaining, by a device, a plurality of joint poses. The device includes a memory storing instructions and a processor in communication with the memory. The method also includes normalizing, by the device, the plurality of joint poses to obtained a plurality of normalized joint poses; extracting, by the device, a plurality of rough features using a modified spatial-temporal GCN (ST-GCN) from the plurality of normalized joint poses; reducing, by the device, a feature dimension of the plurality of rough features to obtain a plurality of dimension-shrunk features; refining, by the device, the plurality of dimension-shrunk features based on a self-attention model to obtain a plurality of refined features; and recognizing, by the device, a human action based on the plurality of refined features.

Abstract: A method for a protocol in digital asset trading includes step as follow. Trading information is exchanged between the first and the second nodes, in which a first digital currency belonging to the first node and a second digital currency belonging to the second node are expected to be exchanged, and prices of the first and second digital currencies are time-dependent. An atomic swap script and a smart contract are generated. A compensation fee to be paid to the second node by the first node is computed. A redeeming or refunding event is performed in response to the atomic swap script and the smart contract with paying the compensation fee to the second node, in which the compensation fee is dependent on the prices of the first and second digital currencies such that is time-dependent.

Abstract: A system and a method for evaluating transport of data segments of media content bitstream over a peer-to-peer network by streaming data chunks of a media content through a peer-to-peer network, generating network transport distortion on the data chunks using live experiments, simulation, or artificial generation, determining a playback strategy of each of the data segment at the receiver end, and evaluating a playback performance of the media content bitstream under the playback strategy.

Abstract: Disclosed are systems and methods which establish a referral gateway for facilitating multi-media content, or other rich content, exchange among users and user devices. Embodiments connect a WLAN, or any specific local area network, with a mobile cellular network for efficiently transmitting messages including rich content. In operation, a sending user does not need to download particular content to form a message, but instead sends a code to a referral gateway which compiles the message and arranges for delivery, such as over a fixed network, a cellular network, etcetera. Using such systems and methods neither the receiver nor the sender are limited by their respective network and/or user device capabilities.

Abstract: A content distribution method with broadcast encryption, comprising an encryption process that includes the computation of a ciphertext using a differential ciphertext generation method. The ciphertext needs to be recomputed whenever the subscriber set changes. The differential ciphertext generation method computes the new ciphertext by reusing previously preserved computational results of a previous ciphertext, thereby improving the efficiency of the system. A content distribution method with broadcast encryption also comprises a decryption process that includes the reconstruction of the encryption secret that is used for decrypting the encrypted content. A wide window point addition method is used in the encryption secret reconstruction. The wide window point addition method reuses previously preserved computational results of group-divided point additions of public parameters, thereby improving the efficiency of the system.

Abstract: A content distribution method with broadcast encryption, comprising: executing a setup process, comprising: generating public domain parameters, generating a server secret, and generating one or more client private keys, one for each content receiving client; executing an encryption process, comprising: generating a cipher text using the server secret, a subscriber set, and a randomness, the cipher text being constant and independent of total number of content receiving clients in a distribution network, generating a plain text using the server secret and the randomness, encrypting an original content into an encrypted content using the plain text; distributing the client private keys to the content receiving clients; distributing the cipher text to the content receiving clients; broadcasting the encrypted content through the distribution network; and executing a decryption process on the encrypted content by each of the content receiving clients in the distribution network.

Abstract: The claimed invention relates to system and method for providing encrypted content via a distribution network 630 with efficient key distribution and distribution network assignment. The claimed invention assigns users to content-specific distribution network in which the content is broadcast. This makes the content access much more efficient by conducting the authorization at the time of joining the content-specific distribution network and providing the content to entitled users through broadcasting. The claimed invention provides additional security by removing a user from the content-specific distribution network when his entitlement is no longer valid.

Abstract: A content distribution method with broadcast encryption, comprising: executing a setup process, comprising: generating public domain parameters, generating a server secret, and generating one or more client private keys, one for each content receiving client; executing an encryption process, comprising: generating a cipher text using the server secret, a subscriber set, and a randomness, the cipher text being constant and independent of total number of content receiving clients in a distribution network, generating a plain text using the server secret and the randomness, encrypting an original content into an encrypted content using the plain text; distributing the client private keys to the content receiving clients; distributing the cipher text to the content receiving clients; broadcasting the encrypted content through the distribution network; and executing a decryption process on the encrypted content by each of the content receiving clients in the distribution network.

Abstract: A content distribution method with broadcast encryption, comprising an encryption process that includes the computation of a ciphertext using a differential ciphertext generation method. The ciphertext needs to be recomputed whenever the subscriber set changes. The differential ciphertext generation method computes the new ciphertext by reusing previously preserved computational results of a previous ciphertext, thereby improving the efficiency of the system. A content distribution method with broadcast encryption also comprises a decryption process that includes the reconstruction of the encryption secret that is used for decrypting the encrypted content. A wide window point addition method is used in the encryption secret reconstruction. The wide window point addition method reuses previously preserved computational results of group-divided point additions of public parameters, thereby improving the efficiency of the system.

Abstract: A system and a method for evaluating transport of data segments of media content bitstream over a peer-to-peer network by streaming data chunks of a media content through a peer-to-peer network, generating network transport distortion on the data chunks using live experiments, simulation, or artificial generation, determining a playback strategy of each of the data segment at the receiver end, and evaluating a playback performance of the media content bitstream under the playback strategy.

Abstract: The present invention relates to method and apparatus for scalable video coding. In particular, the present invention describes a scalable video coding method and a layered video representation that achieves better video quality with more efficient bitstream representation and scalability, and yet is compliant with various codec standard from base layer to enhancement layers so that it incurs minimum modification to existing hardware or system deployed in the field.

Abstract: The claimed invention relates to system and method for providing encrypted content via a distribution network 630 with efficient key distribution and distribution network assignment. The claimed invention assigns users to content-specific distribution network in which the content is broadcast. This makes the content access much more efficient by conducting the authorization at the time of joining the content-specific distribution network and providing the content to entitled users through broadcasting. The claimed invention provides additional security by removing a user from the content-specific distribution network when his entitlement is no longer valid.

Abstract: Some representative embodiments are directed to systems and methods for compressing a data set. In one embodiment, a method comprises receiving a frame of data to be encoded, generating a residual frame that represents a difference between the received frame and one or several reference frames, performing a respective sum of absolute differences (SAD) calculation for each block within the residual frame, and applying a transform function to each data value within the residual frame, wherein the transform function is at least a function of a SAD value calculated for the block containing the respective data value.

Abstract: Some representative embodiments are directed to systems and methods for compressing a data set. In one embodiment, a method comprises receiving a frame of data to be encoded, generating a residual frame that represents a difference between the received frame and one or several reference frames, performing a respective sum of absolute differences (SAD) calculation for each block within the residual frame, and applying a transform function to each data value within the residual frame, wherein the transform function is at least a function of a SAD value calculated for the block containing the respective data value.

Abstract: Disclosed are systems and methods which establish a referral gateway for facilitating multi-media content, or other rich content, exchange among users and user devices. Embodiments connect a WLAN, or any specific local area network, with a mobile cellular network for efficiently transmitting messages including rich content. In operation, a sending user does not need to download particular content to form a message, but instead sends a code to a referral gateway which compiles the message and arranges for delivery, such as over a fixed network, a cellular network, etcetera. Using such systems and methods neither the receiver nor the sender are limited by their respective network and/or user device capabilities.