Patents by Inventor Xiaoxuan Zhang
Xiaoxuan Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10628838Abstract: Systems and methods for modeling and forecasting cyclical demand systems in the presence of dynamic control or dynamic incentives. A method for modeling a cyclical demand system comprises obtaining historical data on one or more demand measurements over a plurality of demand cycles, obtaining historical data on incentive signals over the plurality of demand cycles, constructing a model using the obtained historical data on the one or more demand measurements and the incentive signals, wherein constructing the model comprises specifying a state-space model, specifying variance parameters in the model, and estimating unknown variance parameters.Type: GrantFiled: April 24, 2013Date of Patent: April 21, 2020Assignee: International Business Machines CorporationInventors: Soumyadip Ghosh, Jonathan R. M. Hosking, Ramesh Natarajan, Shivaram Subramanian, Xiaoxuan Zhang
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Publication number: 20190311505Abstract: Selected artifacts, which may be based on distortions or selected attenuation features, may be reduced or removed from a reconstructed image. Various artifacts may occur due to the presence of a metal object in a field of view. The metal object may be identified and removed from a data that is used to generate a reconstruction.Type: ApplicationFiled: April 4, 2019Publication date: October 10, 2019Inventors: Patrick A. Helm, Jeffrey H. Siewerdsen, Ali Uneri, Wojciech Zbijewski, Xiaoxuan Zhang, Joseph W. Stayman, IV
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Patent number: 10282795Abstract: A streams platform is used. Multiple streams of electricity usage data are received, each from an electrical meter providing periodic updates to electrical usage for devices connected to the electrical meter. Weather information is received corresponding to locations where the electrical meters are. Real-time predictive modeling of electricity demand is performed based on the received multiple streams of electricity usage data and the received weather information, at least by performing: updating a state space model for electrical load curves using the usage data from the streams and the weather, wherein the updating uses current load observations for the multiple streams for a current time period; and creating forecast(s) for the electricity demand. The forecast(s) of the electricity demand are output. Appliance-level predictions may be made and used, and substitution effects and load management functions may be performed.Type: GrantFiled: June 22, 2016Date of Patent: May 7, 2019Assignee: International Business Machines CorporationInventors: Soumyadip Ghosh, Jonathan R. Hosking, Ramesh Natarajan, Shivaram Subramanian, Xiaoxuan Zhang
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Publication number: 20180012316Abstract: Embodiments of the disclosure describe a data object information processing method, apparatus, and system.Type: ApplicationFiled: July 3, 2017Publication date: January 11, 2018Inventors: Yuzhou HUANG, Shaohua LI, Guanghua HU, Jing TAN, Xiaoxuan ZHANG, Yanjun LI, Yan GU
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Publication number: 20170371308Abstract: A streams platform is used. Multiple streams of electricity usage data are received, each from an electrical meter providing periodic updates to electrical usage for devices connected to the electrical meter. Weather information is received corresponding to locations where the electrical meters are. Real-time predictive modeling of electricity demand is performed based on the received multiple streams of electricity usage data and the received weather information, at least by performing: updating a state space model for electrical load curves using the usage data from the streams and the weather, wherein the updating uses current load observations for the multiple streams for a current time period; and creating forecast(s) for the electricity demand. The forecast(s) of the electricity demand are output. Appliance-level predictions may be made and used, and substitution effects and load management functions may be performed.Type: ApplicationFiled: June 22, 2016Publication date: December 28, 2017Inventors: Soumyadip Ghosh, Jonathan R. Hosking, Ramesh Natarajan, Shivaram Subramanian, Xiaoxuan Zhang
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Publication number: 20170060109Abstract: A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.Type: ApplicationFiled: November 15, 2016Publication date: March 2, 2017Inventors: Soumyadip GHOSH, Jonathan R. HOSKING, Ramesh NATARAJAN, Shivaram SUBRAMANIAM, Xiaoxuan ZHANG
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Patent number: 9576327Abstract: A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.Type: GrantFiled: June 6, 2013Date of Patent: February 21, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Soumyadip Ghosh, Jonathan R. Hosking, Ramesh Natarajan, Shivaram Subramaniam, Xiaoxuan Zhang
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Patent number: 9563924Abstract: A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.Type: GrantFiled: June 14, 2013Date of Patent: February 7, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Soumyadip Ghosh, Jonathan R. Hosking, Ramesh Natarajan, Shivaram Subramaniam, Xiaoxuan Zhang
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Publication number: 20150235239Abstract: Predicting demand of a newly launched product may comprise obtaining customer sentiment data associated with the newly launched product, the customer sentiment data obtained at least from social media. A mean sentiment lag associated with the customer sentiment data may be determined. A weight given to a predicted PLC effect of the newly launched product relative to customer sentiment identified in the customer sentiment data may be determined. Numerical prediction parameters from parameter values associated with a like-item that is determined to be similar to the newly launched product may be obtained. A product utility valuation may be computed as a weighted combination of the predicted PLC effect and a lagged social media sentiment determined from the customer sentiment data accounted by the mean sentiment lag. The product utility valuation provides an indication of the future demand of the newly launched product.Type: ApplicationFiled: February 19, 2014Publication date: August 20, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Pawan R. Chowdhary, Shivaram Subramanian, Xiaoxuan Zhang
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Publication number: 20150019289Abstract: Systems and methods for forecasting prices of products are provided. A method for forecasting prices of products, comprises obtaining a time series history of a price of a product, imputing a state indicator value for each price data from the time series history, wherein a state is one of a promotional price state and a regular price state, extracting a first price time series for the price data in the promotional state and a second price time series for the price data in the regular state, extracting a promotion duration time series from the time series history, obtaining respective point forecasts for the extracted first price time series, the second price time series and the promotion duration time series, and combining the point forecasts for the extracted first and second price time series and the promotion duration time series to obtain a final price forecast.Type: ApplicationFiled: August 7, 2013Publication date: January 15, 2015Applicant: International Business Machines CorporationInventors: Ramesh Natarajan, Xiaoxuan Zhang
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Publication number: 20150019295Abstract: Systems and methods for forecasting prices of products are provided. A method for forecasting prices of products, comprises obtaining a time series history of a price of a product, imputing a state indicator value for each price data from the time series history, wherein a state is one of a promotional price state and a regular price state, extracting a first price time series for the price data in the promotional state and a second price time series for the price data in the regular state, extracting a promotion duration time series from the time series history, obtaining respective point forecasts for the extracted first price time series, the second price time series and the promotion duration time series, and combining the point forecasts for the extracted first and second price time series and the promotion duration time series to obtain a final price forecast.Type: ApplicationFiled: July 12, 2013Publication date: January 15, 2015Inventors: Ramesh Natarajan, Xiaoxuan Zhang
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Publication number: 20140365022Abstract: A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.Type: ApplicationFiled: June 6, 2013Publication date: December 11, 2014Applicant: International Business Machines CorporationInventors: Soumyadip Ghosh, Jonathan Richard Morley Hosking, Ramesh Natarajan, Shivaram Subramaniam, Xiaoxuan Zhang
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Publication number: 20140365024Abstract: A predictive-control approach allows an electricity provider to monitor and proactively manage peak and off-peak residential intra-day electricity usage in an emerging smart energy grid using time-dependent dynamic pricing incentives. The daily load is modeled as time-shifted, but cost-differentiated and substitutable, copies of the continuously-consumed electricity resource, and a consumer-choice prediction model is constructed to forecast the corresponding intra-day shares of total daily load according to this model. This is embedded within an optimization framework for managing the daily electricity usage. A series of transformations are employed, including the reformulation-linearization technique (RLT) to obtain a Mixed-Integer Programming (MIP) model representation of the resulting nonlinear optimization problem. In addition, various regulatory and pricing constraints are incorporated in conjunction with the specified profit and capacity utilization objectives.Type: ApplicationFiled: June 14, 2013Publication date: December 11, 2014Inventors: Soumyadip Ghosh, Jonathan Richard Morley Hosking, Ramesh Natarajan, Shivaram Subramaniam, Xiaoxuan Zhang
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Publication number: 20140324532Abstract: Systems and methods for modeling and forecasting cyclical demand systems in the presence of dynamic control or dynamic incentives. A method for modeling a cyclical demand system comprises obtaining historical data on one or more demand measurements over a plurality of demand cycles, obtaining historical data on incentive signals over the plurality of demand cycles, constructing a model using the obtained historical data on the one or more demand measurements and the incentive signals, wherein constructing the model comprises specifying a state-space model, specifying variance parameters in the model, and estimating unknown variance parameters.Type: ApplicationFiled: April 24, 2013Publication date: October 30, 2014Applicant: International Business Machines CorporationInventors: Soumyadip Ghosh, Jonathan R.M. Hosking, Ramesh Natarajan, Shivaram Subramanian, Xiaoxuan Zhang
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Patent number: 8626353Abstract: System and method of solving, in a single-period, an optimal dispatching problem for a network of energy generators connected via multiple transmission lines, where it is sought to find the lowest operational cost of dispatching of various energy sources to satisfy demand. The model includes traditional thermal resources and renewable energy resources available generation capabilities within the grid. The method considers demand reduction as a virtual generation source that can be dispatched quickly to hedge against the risk of unforeseen shortfall in supply. Demand reduction is dispatched in response to incentive signals sent to consumers. The control options of the optimization model consist of the dispatching order and dispatching amount energy units at generators together with the rebate signals sent to end-users at each node of the network under a demand response policy. Numerical experiments based on an analysis of representative data illustrate the effectiveness of demand response as a hedging option.Type: GrantFiled: April 12, 2011Date of Patent: January 7, 2014Assignee: International Business Machines CorporationInventors: Soumyadip Ghosh, Jayant R. Kalagnanam, Dmitriy A. Katz-Rogozhnikov, Mark S. Squillante, Xiaoxuan Zhang
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Publication number: 20120185106Abstract: System and method of solving, in a single-period, an optimal dispatching problem for a network of energy generators connected via multiple transmission lines, where it is sought to find the lowest operational cost of dispatching of various energy sources to satisfy demand. The model includes traditional thermal resources and renewable energy resources available generation capabilities within the grid. The method considers demand reduction as a virtual generation source that can be dispatched quickly to hedge against the risk of unforeseen shortfall in supply. Demand reduction is dispatched in response to incentive signals sent to consumers. The control options of the optimization model consist of the dispatching order and dispatching amount energy units at generators together with the rebate signals sent to end-users at each node of the network under a demand response policy. Numerical experiments based on an analysis of representative data illustrate the effectiveness of demand response as a hedging option.Type: ApplicationFiled: April 12, 2011Publication date: July 19, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Soumyadip Ghosh, Jayant R. Kalagnanam, Dmitriy A. Katz-Rogozhnikov, Mark S. Squillante, Xiaoxuan Zhang
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Publication number: 20120078687Abstract: A method, apparatus and computer program product for determining lowest cost aggregate energy demand reduction at multiple network levels such as distribution and feeder networks. An algorithm for an optimal incentive mechanism offered to energy customers (e.g. of a utility power entity) that accounts for heterogeneous customer flexibility in load reduction, with the demand response realized via the utility's rebate signal and, accounts for temporal aspects of demand shift in response for rebates. A mathematical formulation of a cost minimization problem is solved to provide incentives for customers to reduce their demand. A gradient descent algorithm is used to solve for the optimal incentives customized for individual end users.Type: ApplicationFiled: September 24, 2010Publication date: March 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Soumyadip Ghosh, Jayant R. Kalagnanam, Dmitriy A. Katz-Rogozhnikov, Mark S. Squillante, Xiaoxuan Zhang