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Hierarchical patents



      
           
This page is updated frequently with new Hierarchical-related patent applications. Subscribe to the Hierarchical RSS feed to automatically get the update: related Hierarchical RSS feeds. RSS updates for this page: Hierarchical RSS RSS


Method and system for using a recursive event listener on a node in hierarchical data structure

Hierarchical temporal memory (htm) system deployed as web service

System, method and computer program product for efficient caching of hierarchical items

Date/App# patent app List of recent Hierarchical-related patents
07/24/14
20140208227
 Aggregate and hierarchical display of grouped items spanning multiple storage locations patent thumbnailAggregate and hierarchical display of grouped items spanning multiple storage locations
Techniques for the aggregate and hierarchical display of grouped items spanning multiple storage locations are described. Some techniques may aggregate items in response to user input identifying a scope for item retrieval.
07/24/14
20140207940
 Method and system for using a recursive event listener on a node in hierarchical data structure patent thumbnailMethod and system for using a recursive event listener on a node in hierarchical data structure
Disclosed is a method and system for registering a recursive watch on a node in hierarchical data structure. Embodiments of the disclosed technique may include (i) receiving a request to register an event listener on a source node, the source node being one of a plurality of nodes that are related to each other in a hierarchy; (ii) registering the event listener on the source node, the event listener configured to notify a client of an occurrence of a first event in the source node; and (iii) if the source node has a descendant node in the hierarchy, setting the event listener to notify the client of an occurrence of a second event in the descendant node without requiring registration of another event listener on the descendant node.
07/24/14
20140207842
 Hierarchical temporal memory (htm) system deployed as web service patent thumbnailHierarchical temporal memory (htm) system deployed as web service
A web-based hierarchical temporal memory (htm) system in which one or more client devices communicate with a remote server via a communication network. The remote server includes at least a htm server for implementing a hierarchical temporal memory (htm).
07/24/14
20140207825
 System, method and computer program product for efficient caching of hierarchical items patent thumbnailSystem, method and computer program product for efficient caching of hierarchical items
Embodiments disclosed herein provide a “lazy” approach in caching a hierarchical navigation tree with one or more associated permission trees. In one embodiment, only a portion of a cached permission tree is updated.
07/24/14
20140207754
 Gathering index statistics using sampling patent thumbnailGathering index statistics using sampling
An approach is provided in which a sample point system allocates sample point identifiers to a root node included an index tree that includes multiple leaf nodes. The sample point system distributes the sample point identifiers to the root node's child nodes, and recursively traverses through the index tree's hierarchical index levels and distributes the sample point identifiers from the child nodes to a subset of the index tree's leaf nodes.
07/24/14
20140207725
 Device and method for destination prediction patent thumbnailDevice and method for destination prediction
A device for constructing a hierarchical destination prediction mode includes an extracting unit configured to receive a user's historical location data and extract input data and output data from the user's historical location data. The input data includes a leaving location and associated time for the user and the output data includes an arriving location for the user.
07/24/14
20140207251
 Bio-selective surface textures patent thumbnailBio-selective surface textures
Bio-selective textured surfaces are described which mediate foreign body response, bacterial adhesion, and tissue adhesion on devices implanted in a mammalian body. Hierarchical levels of texture, some capable of establishing a wenzel state others a cassie state, are employed to interface with living structures, either to promote or discourage a particular biological response/interaction.
07/24/14
20140207248
 Hierarchical multiscale fibrous scaffold via 3-d electrostatic deposition prototyping and conventional electrospinning patent thumbnailHierarchical multiscale fibrous scaffold via 3-d electrostatic deposition prototyping and conventional electrospinning
A hierarchical multiscale fibrous scaffold comprises multiple patterned layers of microfibers with one or more layers of nanofibers interleaved therebetween. In a method for making such scaffolds, electrodeposition or near-field electrospinning is used to deposit patterned layers of microfibers in a stack.
07/24/14
20140205004
 Method and apparatus for encoding video and method and apparatus for decoding video, based on hierarchical structure of coding unit patent thumbnailMethod and apparatus for encoding video and method and apparatus for decoding video, based on hierarchical structure of coding unit
An apparatus and method for encoding video data and an apparatus and method for decoding video data are provided. The encoding method includes: splitting a current picture into at least one maximum coding unit; determining a coded depth to output an encoding result by encoding at least one split region of the at least one maximum coding unit according to operating mode of coding tool, respectively, based on a relationship among a depth of at least one coding unit of the at least one maximum coding unit, a coding tool, and an operating mode, wherein the at least one split region is generated by hierarchically splitting the at least one maximum coding unit according to depths; and outputting a bitstream including encoded video data of the coded depth, information regarding a coded depth of at least one maximum coding unit, information regarding an encoding mode, and information regarding the relationship..
07/24/14
20140205003
 Method and apparatus for encoding video and method and apparatus for decoding video, based on hierarchical structure of coding unit patent thumbnailMethod and apparatus for encoding video and method and apparatus for decoding video, based on hierarchical structure of coding unit
An apparatus and method for encoding video data and an apparatus and method for decoding video data are provided. The encoding method includes: splitting a current picture into at least one maximum coding unit; determining a coded depth to output an encoding result by encoding at least one split region of the at least one maximum coding unit according to operating mode of coding tool, respectively, based on a relationship among a depth of at least one coding unit of the at least one maximum coding unit, a coding tool, and an operating mode, wherein the at least one split region is generated by hierarchically splitting the at least one maximum coding unit according to depths; and outputting a bitstream including encoded video data of the coded depth, information regarding a coded depth of at least one maximum coding unit, information regarding an encoding mode, and information regarding the relationship..
07/24/14
20140204960
Methods and arrangements for traffic indication mapping in wireless networks
Embodiments may implement a new hierarchical data structure for traffic indication mapping to facilitate transmissions for wireless communications devices. Many embodiments comprise mac sublayer logic to generate and transmit management frames such as beacon frames with a partial virtual bitmap based upon the hierarchical data structure for traffic indication mapping.
07/24/14
20140204094
Dimensional data chart matrixes with drill operations
A computing device outputs a chart matrix defined by associating a first data dimension with a row edge and a second data dimension with a column edge. Members of the first data dimension are displayed as row headers of the chart matrix, and members of the second data dimension are displayed as column headers of the chart matrix.
07/17/14
20140201560
Hierarchical global clock tree
Methods, systems, and circuits for forming and operating a global hierarchical clock tree are described. The global hierarchical clock tree may comprise a clock circuit that operates to provide clock signals to a core circuit surrounded by the clock circuit.
07/17/14
20140201520
Attribute-based access-controlled data-storage system
The current application is directed to computationally efficient attribute-based access control that can be used to secure access to stored information in a variety of different types of computational systems. Many of the currently disclosed computationally efficient implementations of attribute-based access control employ hybrid encryption methodologies in which both an attribute-based encryption or a similar, newly-disclosed policy-encryption method as well as a hierarchical-key-derivation method are used to encrypt payload keys that are employed, in turn, to encrypt data that is stored into, and retrieved from, various different types of computational data-storage systems..
07/17/14
20140201447
Data processing apparatus and method for handling performance of a cache maintenance operation
A data processing apparatus has data processing circuitry for performing data processing operations on data, and a hierarchical cache structure for storing at least a subset of the data for access by the data processing circuitry. The hierarchical cache structure has first and second level caches, and data evicted from the first level cache is routed to the second level cache under the control of second level cache access control circuitry.
07/17/14
20140201331
Platform for the delivery of content and services to networked connected computing devices
Platform for the delivery of content and services to networked connected computing devices, in which the platform stores content by arranging nodes in a hierarchical data format that is capable of semantically representing content, with each node including a unique id. The hierarchical format acts as an abstraction layer that insulates a content or service creator and the connected computing devices from being restricted (i) to any specific, predefined data format for the content or (ii) to any specific, predefined transport media for exchanging data over the network..
07/17/14
20140201244
Method for representing and storing hierarchical data in a columnar format
A computer implemented system, program product, and method that organizes hierarchical data into a plurality of columns is disclosed. A schema interface is defined for the data and two types of columns, value columns and occurrence columns, are used.
07/17/14
20140201243
Interactive rendering of physical entities
A method for generating a model of a physical entity, in particular the earth, using one or more hierarchically organized multi-resolutional data trees t, each data tree comprising a plurality of nodes nk, each node having a grid with a fixed number of points, wherein each node can store an arbitrary number of data items, each holding scalar field values for each point in the grid, the method comprising the steps of creating a geometry using one or more data trees; and creating an associated overlay using one or more data trees, wherein at least one of the geometry and overlay comprises a formula to be applied to data within one or more data trees. This enables manipulation of the data within the data trees during rendering and increases the adaptability of the model without an increase in the required memory space.
07/17/14
20140201203
System, method and device for providing an automated electronic researcher
A research system, method and device directed to providing a query results tree of logical dependencies in response to one or more user queries. Specifically, the research system includes a searcher module, an inference module, a front-end module and an updater module.
07/17/14
20140200679
Implantable superhydrophobic surfaces
Bio-adhesive textured surfaces are described which allow implants to be localized within a living body. Hierarchical levels of texture on an implantable medical device, some capable of establishing a wenzel state and others a cassie state, are employed to interface with living structures to provide resistance to device migration.
07/17/14
20140198401
Hierarchical control of tiered error recovery for storage devices
A computer program product includes a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code being executable by a processing circuit to cause the processing circuit to perform the following process. A data transfer operation is monitored for detecting one or more temps.
07/10/14
20140196141
Hierarchical rule development and binding for web application server firewall
At least one of an http request message and an http response message is intercepted. A corresponding http message model includes a plurality of message model sections.
07/10/14
20140196030
Hierarchical thresholds-based virtual machine configuration
In response to a performance parameter of a virtual machine (vm) exceeding a threshold, an operation to be performed relative to the vm is identified. A resource requirement of performing the operation is determined using a resource requirement thresholds hierarchy.
07/10/14
20140195760
Storage apparatus and data management method
A storage apparatus for which a hierarchical data management system is adopted is designed so that when receiving a read request for a first logical area to which a first storage area of a first storage device in a virtual volume is allocated, whether or not to migrate data in a first storage area of the first storage device, to a storage area of a second storage device is decided according to an access frequency to the first logical area in synchronization with the read request. When it is decided that the data stored in the first storage area of the first storage device should be migrated to the storage area of the second storage device, the data is migrated to a second storage area of the second storage device and the second storage area thereof is allocated to the first logical area in the virtual volume..
07/10/14
20140195689
Swan: achieving high utilization in networks
Greater network utilization is implemented through dynamic network reconfiguration and allocation of network services and resources based on the data to be transferred and the consumer transferring it. A hierarchical system is utilized whereby requests from lower layers are aggregated before being provided to upper layers, and allocations received from upper layers are distributed to lower layers.
07/10/14
20140195601
Data store interface that facilitates distribution of application functionality across a multi-tier client-server architecture
Methods and systems for facilitating distribution of application functionality across a multi-tier client-server architecture are provided. According to one embodiment, multiple data points from a database associated with a server computer system are cached into a hierarchical data map representing a random access memory-resident data structure.
07/10/14
20140195543
System and method for providing orientation into subject areas of digital information for augmented communities
A system and method for providing orientation into subject areas of digital information for augmented communities is provided. Topics are provided for subject areas.
07/10/14
20140195367
System and process for hierarchical multi-level segmentation and estimate reuse request
The system comprises a request for quote module (rfq module), an estimate module (estimate module) and a request for quote reply module (rfq reply module), and a module for storing and/or communicating existing estimates and quotes (rides module) across hierarchical levels in the purchase process.. .
07/10/14
20140195197
Systems and methods for energy efficient machine condition monitoring of fans, motors, pumps, compressors and other equipment
Methods and systems to achieve highly efficient rotational machine integrity determinations in which at least one sensor (106) senses indicia (105) such as time-varying rotational indicia from a rotational motive apparatus (103) and a processor (108) may provide many different functions including but not limited to operational function energy apportioning decisional processing, data compression, intelligent hierarchical data ranking, differential data processing, or the like perhaps to generate information (109) such as a rotational integrity abridgment transmissor to which an abridgment transmissor electromagnetic signal (112) may be created and perhaps even transmitted from a rotational motive apparatus to facilitate a machine integrity determination.. .
07/10/14
20140193875
Porous polymeric resins
Porous polymeric resins, reaction mixtures and methods that can be used to prepare the porous polymeric resins, and uses of the porous polymeric resin are described. More specifically, the polymeric resins typically have a hierarchical porous structure plus reactive groups that can be used to interact with or react with a variety of different target compounds.
07/10/14
20140192890
Method and apparatus for encoding video by motion prediction using arbitrary partition, and method and apparatus for decoding video by motion prediction using arbitrary partition
A method of decoding a video includes determining coding units having a hierarchical structure being data units in which the encoded image is decoded, and sub-units for predicting the coding units, by using information that indicates division shapes of the coding units and information about prediction units of the coding units, parsed from a received bitstream of a encoded image, wherein the sub-units comprise partitions obtained by splitting at least one of a height and a width of the coding units according to at least one of a symmetric ratio and an asymmetric ratio, and reconstructing the image by performing decoding including motion compensation using the partitions for the coding units, using the encoding information parsed from the received bitstream, wherein the coding units having the hierarchical structure comprise coding units of coded depths split hierarchically according to the coded depths and independently from neighboring coding units.. .
07/10/14
20140192875
Method and apparatus for encoding video by motion prediction using arbitrary partition, and method and apparatus for decoding video by motion prediction using arbitrary partition
An apparatus for decoding a video includes a receiver which receives and obtains a bitstream of an encoded image, a processor which determines coding units having a hierarchical structure being data units in which the encoded image is decoded, and sub-units for predicting the coding units, by using information that indicates division shapes of the coding units and information about prediction units of the coding units, obtained from the received bitstream, wherein the sub-units comprise partitions obtained by splitting at least one of a height and a width of the coding units according to at least one of a symmetric ratio and an asymmetric ratio, and a decoder which reconstructs the image by performing decoding including motion compensation using the partitions for the coding units, using the encoding information parsed from received bitstream, wherein the coding units having the hierarchical structure comprise coding units of coded depths split hierarchically according to the coded depths and independently from neighboring coding units.. .
07/10/14
20140192874
Method and apparatus for encoding video by motion prediction using arbitrary partition, and method and apparatus for decoding video by motion prediction using arbitrary partition
An apparatus for decoding a video including a processor which determines coding units having a hierarchical structure being data units in which the encoded image is decoded, and sub-units for predicting the coding units, by using information that indicates division shapes of the coding units and information about prediction units of the coding units, parsed from a received bitstream of a encoded image, wherein the sub-units comprise partitions obtained by splitting at least one of a height and a width of the coding units according to at least one of a symmetric ratio and an asymmetric ratio, and a decoder which reconstructs the image by performing decoding including motion compensation using the partitions for the coding units, using the encoding information parsed from the received bitstream, wherein the coding units having the hierarchical structure comprise coding units of coded depths split hierarchically according to the coded depths and independently from neighboring coding units.. .
07/10/14
20140192793
Systems and methods for hierarchical time source usage in near-me area network discovery and synchronization
Methods, devices, and computer program products for hierarchical time source usage in near-me area network discovery and synchronization are described herein. In one aspect, a method for determining a discovery period using a hierarchy of external timing sources is provided.
07/10/14
20140192596
Nonvolatile memory with split substrate select gates and heirarchical bitline configuration
Generally, the present disclosure provides a non-volatile memory device having a hierarchical bitline structure for preventing erase voltages applied to one group of memory cells of the memory array from leaking to other groups in which erasure is not required. Local bitlines are coupled to the memory cells of each group of memory cells.
07/10/14
20140191575
Hierarchic macroscopic incentivization for electric utility load balancing
A method of balancing a demand for electricity is disclosed. Consumers of the electricity are organized into a hierarchical set of nodes.
07/03/14
20140189706
Reliability-aware application scheduling
Reliability-aware scheduling of processing jobs on one or more processing entities is based on reliability scores assigned to processing entities and minimum acceptable reliability scores of processing jobs. The reliability scores of processing entities are based on independently derived statistical reliability models as applied to reliability data already available from modern computing hardware.
07/03/14
20140189599
Vehicle multimedia system
A vehicle multimedia system includes a display that displays a hierarchically structured menu. The hierarchically structured menu may have a main menu, a plurality of submenus, and menu items.
07/03/14
20140189450
Hierarchical, distributed built-in self-repair solution
A built-in self-test (bist) circuit to test one or more memory blocks on an integrated circuit. The one or more memory blocks further includes a first memory block and a second memory block a built-in soft-repair controller (bisor) is provided to soft repair the one or more memory blocks.
07/03/14
20140189426
Apparatus and method for fast failure handling of instructions
A processor is described comprising: instruction failure logic to perform a plurality of operations in response to a detected instruction execution failure, the instruction failure logic to be used for instructions which have complex failure modes and which are expected to have a failure frequency above a threshold, wherein the operations include: detecting an instruction execution failure and determining a reason for the failure; storing failure data in a destination register to indicate the failure and to specify details associated with the failure; and allowing application program code to read the failure data and responsively take one or more actions responsive to the failure, wherein the instruction failure logic performs its operations without invocation of an exception handler or switching to a low level domain on a system which employs hierarchical protection domains.. .
07/03/14
20140189028
Automated communications system
Embodiments of the present invention are directed to automated systems for organizing and facilitating information exchange between members of an organization. Automated systems that represent embodiments of the present invention allow for creation and administration of hierarchical groupings of members of the organization to facilitate efficient dissemination of information among members of groups.
07/03/14
20140188958
Data driven hierarchical pages
A method of managing data includes generating a model file containing descriptions of the data, wherein the descriptions of the data in the model file are formatted as a collection of dictionaries, wherein the descriptions of the data are divided into multiple groups that are associated with multiple hierarchical pages, and wherein the multiple groups associated with the multiple hierarchical pages are listed in the model file in a flat structure, and generating a controller file that, when executed by a processor, causes the processor to interpret the model file and present the data in the multiple hierarchical pages to a user, wherein the controller file refers to one of the multiple groups in the model file, wherein the controller file is re-used to interpret the multiple groups in the descriptions of the data and present the data in the multiple hierarchical pages.. .
07/03/14
20140188957
Hierarchical storage system and file management method
The present invention makes it possible to execute file management efficiently even if a situation occurs that real data cannot be acquired because metadata in a lower level system cannot be accessed. In a hierarchical storage system, a higher level system acquires available metadata range information indicative of available and unavailable ranges of metadata, from the lower level system, and identifies inaccessible files that are in a state that reading of substantial data in accordance with a stub file is impossible on the lower level, on the basis of the available metadata range information.
07/03/14
20140188942
Data driven hierarchical pages
A method of managing data includes generating a model file containing descriptions of the data, wherein the descriptions of the data in the model file are formatted as a collection of dictionaries, wherein the descriptions of the data are divided into multiple groups that are associated with multiple hierarchical pages, and wherein the multiple groups associated with the multiple hierarchical pages are listed in the model file in a flat structure, and generating a controller file that, when executed by a processor, causes the processor to interpret the model file and present the data in the multiple hierarchical pages to a user, wherein the controller file refers to one of the multiple groups in the model file, wherein the controller file is re-used to interpret the multiple groups in the descriptions of the data and present the data in the multiple hierarchical pages.. .
07/03/14
20140188812
Restoration of centralized data storage manager, such as data storage manager in a hierarchical data storage system
Systems and methods for restoring a database in an information management system that does not include a secondary copy of the database, are disclosed. The systems and methods may include using metadata stored in non-production storage devices to restore the database.
07/03/14
20140188784
Systems and methods for data-warehousing to facilitate advanced business analytic assessment
Certain embodiments contemplate systems and methods for improving the speed and efficiency of a data warehouse. In some embodiments, an etl process is modified to perform a joined indexing operation which reduces the number of lookup requests required.
07/03/14
20140188780
Knowledge discovery from citation networks
In a corpus of scientific articles such as a digital library, documents are connected by citations and one document plays two different roles in the corpus: document itself and a citation of other documents. A bernoulli process topic (bpt) model is provided which models the corpus at two levels: document level and citation level.
07/03/14
20140188689
Distributed hierarchical control architecture for integrating smart grid assets during normal and disrupted operations
Disclosed herein are representative embodiments of methods, apparatus, and systems for facilitating operation and control of a resource distribution system (such as a power grid). Among the disclosed embodiments is a distributed hierarchical control architecture (dhca) that enables smart grid assets to effectively contribute to grid operations in a controllable manner, while helping to ensure system stability and equitably rewarding their contribution.
07/03/14
20140188574
System and method for objective assessment of learning outcomes
A system for objective assessment of learning outcomes comprising a data repository comprising at least a hierarchical arrangement of a plurality of learning goals, a report generator coupled to the data repository, an analysis engine coupled to the data repository, a rules engine coupled to the data repository, and an application server adapted to receive application-specific requests from a plurality of client applications and coupled to the data repository. The application server is further adapted to provide an administrative interface for viewing, editing, or deleting a plurality of learning goals and relationships between them, learning assessment tools, learning outcome reports, and learning indexes, and the rules engine performs a plurality of consistency checks to ensure alignment between and among learning goals, learning assessment tools, learning outcomes, and learning indexes.
07/03/14
20140188551
Systems and methods for providing navigation tendencies to users of a website
The example systems and methods provide ways for websites to monitor, store, retrieve, and display navigation tendencies of users of websites. More particularly, the systems and methods involve websites displaying measures of user traffic associated with various categories of web content.
07/03/14
20140188456
Dictionary markup system and method
A method for providing the appropriate meaning of an entry in a text is described. The method includes the steps of determining if there are alternative meanings of the entry in an electronic dictionary and if there are alternative meanings determining the dictionary markup theme associated with each of the alternative meanings of the entry.
07/03/14
20140187651
Multi-hierarchical self-assembly of a collagen mimetic peptide
The present disclosure generally relates to collagen, and more particularly compositions and methods related to collagen-mimetic peptides. More specifically, the present disclosure provides a collagen-mimetic peptide and peptide systems comprising the amino acid sequence (pro-lys-gly)4(pro-hyp-gly)4(asp-hyp-gly)4..
07/03/14
20140187427
Quantum processor based systems and methods that minimize an objective function
Quantum processor based techniques minimize an objective function for example by operating the quantum processor as a sample generator providing low-energy samples from a probability distribution with high probability. The probability distribution is shaped to assign relative probabilities to samples based on their corresponding objective function values until the samples converge on a minimum for the objective function.
07/03/14
20140185803
Secure network coding for multi-resolution wireless transmission
Described herein is a method and system for hierarchical wireless video with network coding which limits encryption operations to a critical set of network coding coefficients in combination with multi-resolution video coding. Such a method and system achieves hierarchical fidelity levels, robustness against wireless packet loss and efficient security by exploiting the algebraic structure of network coding..
07/03/14
20140185681
Hierarchical inter-layer prediction in multi-loop scalable video coding
A method for encoding a video sequence in a scalable video encoder to generate a scalable bitstream is provided that includes encoding the video sequence in a first layer encoder of the scalable video encoder to generate a first sub-bitstream, encoding the video sequence in a second layer encoder of the scalable video encoder to generate a second sub-bitstream, wherein portions of the video sequence being encoded in the second layer encoder are predicted using reference portions of the video sequence encoded in the first layer encoder, combining the first sub-bitstream and the second sub-bitstream in the scalable bitstream, and signaling an indication of a highest temporal level of the first sub-bitstream comprising at least one of the reference portions in the scalable bitstream.. .
07/03/14
20140185451
Low pass filter for hierarchical pipelined distributed scheduling traffic manager
A method is implemented by a network element to provide scalable hierarchical traffic management (htm) over a plurality of network layers for a network and eliminate priority leaking caused by quick loopback batch scheduling that analyzes a subset of network layers to shorten processing time and resource requirements when the scalable htm selects data packets to be forwarded. The method and system function as a low pass filter over the selected data packets to prevent low priority data packets being forwarded where higher priority data packets are available to be forwarded..
07/03/14
20140185437
Methods and arrangements for traffic indication mapping in wireless networks
Embodiments may implement a hierarchical data structure for traffic indication mapping. Many embodiments facilitate establishing a number of pages and a number of blocks per page in a bitmap structure.
07/03/14
20140184908
Method and apparatus for multimedia stream synchronization
The method and apparatus for multimedia stream synchronization includes establishing a hierarchical clock system for use in synchronization. The clock system includes establishing at least one parent clock and establishing a child clock for each multimedia stream to be synchronized.
07/03/14
20140184430
Hierarchical entropy encoding and decoding
A particular implementation receives geometry data of a 3d mesh, and represents the geometry data with an octree. The particular implementation partitions the octree into three parts, wherein the symbols corresponding to the middle part of the octree are hierarchical entropy encoded.


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Hierarchical topics: Hierarchical, Digital Network, Distributed, Electrical Signal, Integrated Circuit, Tree Structure, Congestion

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