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82 results about "Minimum cost path" patented technology

Path selection in wireless networks

In a wireless network, a lowest cost path from a source node to a target node is selected from a plurality of potential paths. The source node sums costs for the links of each potential path. For each link, these costs include a cost of interference, dependent on a number of nodes affected by a signal sent via the respective link. The link costs can also include a cost of transmission, dependent upon a data rate for the respective link, and a cost of coordination for transmissions with other nodes of the network.
Owner:APPLE INC

Method and apparatus for moving in minimum cost path using grid map

A method of moving in a minimum cost path using a grid map, and an apparatus to perform the method, the method including calculating a move cost to a goal, from each of a plurality of cells comprises in a space in which a mobile home appliance moves, and planning a movement path to the goal according to the move cost; determining one or more via points at which a direction changes on the movement path; planning the minimum cost path from the movement path by selecting one or more shortest-distance via points from the via points; and moving from a first shortest-distance via point to a second shortest-distance via point.
Owner:SAMSUNG ELECTRONICS CO LTD

Wireless local area network context control protocol

A Wireless LAN Context Control Protocol (WLCCP) is used to establish and manage a wireless network topology and securely manages the “operational context” for mobile stations in a campus network. The WLCCP registration protocol can automatically create and delete links in the network, securely distribute operational context, and reliably establish Layer 2 forwarding paths on wireless links. A single infrastructure node is established as the central control point for each subnet, and enables APs and MNs to select the parent node that provides the “least-cost path” to a backbone LAN. Context messages provide a general-purpose transport for context and management information. WLCCP “Trace” messages facilitate network diagnostic tools. Ethernet or UDP / IP encapsulation can be used for WLCCP messages. Ethernet encapsulation is employed for intra-subnet (e.g. AP-to-AP or AP-to-SCM) WLCCP messages. IP encapsulation is used for inter-subnet WLCCP messages and may also be used for intra-subnet WLCCP messages.
Owner:CISCO TECH INC

Joint search method for UAV multiobjective path planning in urban low altitude environment

A joint search method for UAV multiobjective path planning in an urban low altitude environment first constructs a static safety index map based on static known obstacles. Meanwhile, based on proactively detected obstacles that are not marked on a geographic map by a UAV, the method constructs online a dynamic safety index map. Second, a multiobjective path planning problem is solved using a joint offline and online search method. Moreover, this method first plans offline the least cost path from a starting point to an end point and then invokes the online search scheme to replan online a changed path when the UAV detects unknown obstacles. Thus, the UAV can avoid dynamic obstacles effectively. The online search scheme has a small search space and can quickly replan a safe path for the UAV, thus satisfying the requirement of UAV on the real-time path planning.
Owner:BEIHANG UNIV

Static dense multicast path and bandwidth management

Improved algorithms are provided for performing path management for a plurality of select data transmission sessions in a multicast network. The algorithms include: constructing a weighted graph which represents topology of the network; assigning load correlated costs to network links; and computing least cost paths for each of the data transmission sessions which accounts for global bandwidth utilization.
Owner:PANASONIC CORP

Systems and methods for multipath routing

A method and system for directing data packets from an origin node to a destination node in a multipath communication network having a plurality of nodes, where each node is connected to at least one other node by links. The apparatus includes a processor for obtaining cost information relating to each link in the network and for determining the least-cost route between the origin node and the destination node based on the cost information relating to each link. The processor establishes a cost margin representing a range of costs above the cost of the least cost route and identifies one or more alternate routes. A data storage device stores the cost information, and a network interface selectively routes the data packets through one or more of the least cost route and the one or more alternate routes falling within the established cost margin thus balancing the network load and providing alternate data paths in case the least-cost path is unavailable.
Owner:AVAYA INC

Pattern discovery in multi-dimensional time series using multi-resolution matching

A method discovers patterns in unknown multi-dimensional data. A time-series of the multi-dimensional data is generated and a point cross-distance matrix is constructed by self-correlating the time-series. All minimum cost paths in the point cross-distance matrix are located at multiple time resolutions. The minimum cost paths are then related to temporal sub-sequences in the multi-dimensional data to discover high-level patterns in the unknown multi-dimensional data.
Owner:MITSUBISHI ELECTRIC RES LAB INC

Texture synthesis and transfer for pixel images

The invention provides an image-based method for generating novel visual appearance in a new image. Synthetic texture is stitching together from small patches in existing images. First, we use a least cost path determination to determine the local boundaries between the patches. Second, we perform texture transfer by rendering an arbitrary object with a synthetic texture taken from a different object. More generally, we provide methods for rendering entire images in styles of different images. The method works directly on pixel images, and does not require 3D information.
Owner:MITSUBISHI ELECTRIC INFORMATION TECH CENT AMERICA ITA +1

Method for determining similarities between data sequences using cross-correlation matrices and deformation functions

A method compares a first data sequence with a second data sequence. A cross-correlation matrix of distances between all possible pairs of values of the first and second data sequences is constructed. A minimum cost path between diagonally opposing corners of the cross-correlation matrix is determined. The minimum cost path is projected onto a transfer function that maps between the first data sequence and the second data sequence. Then, the minimum cost path is projected onto a deformation function that corresponds to a similarity between the first data sequence and the second data sequence.
Owner:MITSUBISHI ELECTRIC RES LAB INC

Load balancing in a network comprising communication paths having different bandwidths

A network comprises a plurality of interconnected switches. At least one pair of switches is interconnected by a trunk formed from a plurality of individual links. A cost value is assigned to the trunk that is equal to the cost of one of the trunk's individual links. As such, a trunk is considered the same as an individual link when shortest path calculations are made. When multiple paths are computed as having the same lowest cost, the system balances load traffic between such lowest cost paths in a way that takes advantage of the higher bandwidth capabilities of trunks.
Owner:AVAGO TECH INT SALES PTE LTD

Modeling Cerebral Aneurysms in Medical Images

Methods and systems for modeling cerebral aneurysm and their incoming and outgoing vessels from 3D image data are disclosed. Aneurysms and vessels are segmented from their background using a graph-cuts method. Begin and end of vessels are determined. Construction of a centerline of the incoming and outgoing vessels using a measure of vesselness in calculating a minimum cost path in a graph with nodes being representation of pixels is also disclosed. Vessel surface models are constructed from sub-voxel cross-sectional segmentation. The interpolation of vessels inside an aneurysm based on smooth continuity is disclosed. Selection of endo-vascular stents based on interpolation results is also provided.
Owner:SIEMENS HEALTHCARE GMBH

Method and system for determining a least cost path for routing international communications traffic

InactiveUS7352852B1Easily and accurately and efficiently determineFacilitate communicationTelephonic communicationIdentifying VariableTelecommunications network
A method, system, and medium for determining a least-cost, international-routing path to communicate data across a telecommunications network are provided. The path implementation variables can be presented on a user interface or used to automatically generate a switch update transaction that implements the path. The method includes identifying variables that affect the determination of a least-cost path, receiving data values that correspond to the variables, and presenting the data values so that the path can be determined in response to observing the variables. Confidence and route testing can be conducted using the present invention.
Owner:SPRINT CORPORATION

Congestion control method and network nodes

The invention discloses a congestion control method and network nodes. The method comprises the following steps: acquiring a plurality of minimum cost paths from one network node to the other networknodes by the network node; computing the congestion index and the congestion tolerability of each grouping priority sequence which is transmitted on each output interface of the network nodes and needs ensuring time delay; judging whether various grouping priority sequences are congested or not according to the congestion index and the congestion tolerability; when the congestion occurs, selectingone output interface which is not congested from output interfaces corresponding to the minimum cost paths according to destination network nodes of various data streams carried by the congested grouping priority sequence; and transmitting the data stream of the congested grouping priority sequence through the grouping priority sequence of the output interface which is not congested. The embodiment of the invention fully utilizes forward resources in the network and ensures that the congested grouping priority sequence correctly transmits.
Owner:THE PLA INFORMATION ENG UNIV

Navigation devices and methods carried out thereon

This invention concerns a method of determining a route using map data comprising a plurality of navigable paths, the map data divided into a plurality of regions. The method comprises using at least one processing apparatus to: receive an origin and a destination on the map data and a selection of one of a plurality of cost functions and determine a route from the origin to the destination using the map data and minimum cost data that identifies minimum cost paths between regions of the map data. The minimum cost data identifies more than one minimum cost path between a pair of the regions if different minimum cost paths exist between the pair of regions for different cost functions and determining a route comprises identifying from the minimum cost paths for the pair of regions comprising the origin and destination, the minimum cost path having a lowest cost for the selected cost function.
Owner:TOMTOM INT BV

Fast alignment of large-scale sequences using linear space techniques

Large scale sequences and other types of patterns may be matched or aligned quickly using a linear space technique. In one embodiment, the invention includes, calculating a similarity matrix of a first sequence against a second sequence, determining a lowest cost path through the matrix, where cost is a function of sequence alignment, dividing the similarity matrix into a plurality of blocks, determining local start points on the lowest cost path, the local start points each corresponding to a block through which the lowest cost path passes, dividing sequence alignment computation for the lowest cost path into a plurality of independent problems based on the local start points, solving each independent problem independently, and concatenating the solutions to generate an alignment path of the first sequence against the second sequence.
Owner:INTEL CORP

Method and software for shape representation with curve skeletons

Embodiments of the invention utilize a variational framework for computing curve skeletons (CS) of objects whose cross section is not necessary tubular. Embodiments utilize an energy function, which is proportional to some medialness function, such that the minimum cost path between any two medial voxels in the shape is a curve skeleton. Different medialness functions include the Euclidean distance field and a modified version of the magnitude of the gradient vector flow (GVF), which results in two different energy functions. The first energy function controls the identification of the topological nodes of the shape from which curve skeletons start, while the second one controls the extraction of the curve skeletons. Preferred embodiments are completely automated since all parameters are analytically estimated. Embodiments are highly less sensitive to boundary noise, are able to extract the entire curve skeletons, as well as only part of it given the starting and the end voxels, and do not require voxels to be isotropic. In addition, computed curve skeletons are highly centered and form a connected graph. Preferred embodiments have been validated the framework both quantitatively and qualitatively against several 3D shapes of different complexity.
Owner:UNIV OF LOUISVILLE RES FOUND INC

Distributional assessment system

A distributional assessment system for assessing the job performance of individuals within an organization. A rater, uses the distributional assessment system to rate the performance of a ratee, such as an employee. The distributional assessment system guides the rater through a job function description process to generate a set of assigned weights and a best feasible performance rating. The weights and best feasible performance rating are used along with an actual performance rating to generate an overall distributional assessment of the ratee. The ratee may use the weights and distributional assessment to determine the lowest cost path to improving personal job performance. In addition, an organization can use aggregate distributional assessments to determine the overall performance rating of an organization and determine the lowest cost path to improving the organization's performance. Individual distributional assessments and new job function weights may be used to identify the most likely candidates for a job promotion.
Owner:KANE JEFFREY S

Text message based waveform concatenation speech synthesis method

The invention relates to a text message based waveform concatenation speech synthesis method. The text message based waveform concatenation speech synthesis method includes steps of S1, extracting acoustic parameters and text parameters of all elements in an original voice frequency through segment cutting, and training a duration prediction model and a weight prediction model according to extracted parameters; S2, using a layered pre-selection method to primarily pre-select the elements in a corpus to obtain candidate elements by means of a target element of text analysis and a duration predicted by the duration prediction model; S3, calculating the target element, the candidate elements, and weight information predicted by the weight prediction model to obtain a target cost; calculating Integrating degrees of two adjacent elements to obtain a concatenation cost; using a viterbi searching method to search the target cost and the concatenation cost to obtain a minimum cost path so as to further obtain an optimum element and obtain synthesis speeches through smooth concatenation.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Cooperative optimization method and system for electrified traffic network and electric system

ActiveCN106042963ALow cost pathFacilitate Co-OptimizationCharging stationsOperating modesElectric power systemTraffic network
The invention provides a cooperative optimization method and system for an electrified traffic network and an electric system. The electrified traffic network of an electric car and the electric network are coupled, an initial path of the electric car and initial price parameters of charging stations are obtained, the position information and residual electric quantity information of the electric car are obtained in real time, a minimum-cost path of the electric car is searched for through a dijkstra algorithm according to the position information, the residual electric quantity information and the initial path of the electric car and the initial price parameters of the charging stations, the electric quantity required by each charging station is worked out, and the electric network is optimized through a Lagrangean relaxation algorithm. The electrified traffic network of the electric car and the electric system are coupled, on the one hand, the path optimization is solved through the dijkstra algorithm, and the sum of charging, transportation and time-consuming cost is reduced, and on the other hand, electric network feedback is optimized through the Lagrangean relaxation algorithm according to the electric quantity required by each charging station, and cooperative optimization of the electrified traffic network and the electric system is achieved.
Owner:SYSU CMU SHUNDE INT JOINT RES INST +1
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