Patents by Inventor Petros Zerfos
Petros Zerfos 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).
-
Patent number: 11966340Abstract: To automate time series forecasting machine learning pipeline generation, a data allocation size of time series data may be determined based on one or more characteristics of a time series data set. The time series data may be allocated for use by candidate machine learning pipelines based on the data allocation size. Features for the time series data may be determined and cached by the candidate machine learning pipelines. Predictions of each of the candidate machine learning pipelines using at least the one or more features may be evaluated. A ranked list of machine learning pipelines may be automatically generated from the candidate machine learning pipelines for time series forecasting based upon evaluating predictions of each of the one or more candidate machine learning pipelines.Type: GrantFiled: March 15, 2022Date of Patent: April 23, 2024Assignee: International Business Machines CorporationInventors: Long Vu, Bei Chen, Xuan-Hong Dang, Peter Daniel Kirchner, Syed Yousaf Shah, Dhavalkumar C. Patel, Si Er Han, Ji Hui Yang, Jun Wang, Jing James Xu, Dakuo Wang, Gregory Bramble, Horst Cornelius Samulowitz, Saket K. Sathe, Wesley M. Gifford, Petros Zerfos
-
Publication number: 20240119116Abstract: A method of detecting seasonality in time series data includes receiving a set of time series data, analyzing the time series data to generate a power spectrum, the power spectrum indicative of power as a function of frequency, and selecting a peak in the power spectrum, the selected peak having a peak power. The method also includes performing an interpolation around the selected peak, and selecting a number of additional peaks having powers within a selected proportion of the peak power. The method further includes, based on the number of additional peaks being less than a threshold number, identifying the selected peak as representing a season having a seasonal length, and determining a seasonal length of the season based on a frequency at the identified peak.Type: ApplicationFiled: March 7, 2023Publication date: April 11, 2024Inventors: David Alvra Wood, III, Petros Zerfos, Syed Yousaf Shah
-
Patent number: 11915123Abstract: Embodiments relate to a system, program product, and method for employing deep learning techniques to fuse data across modalities. A multi-modal data set is received, including a first data set having a first modality and a second data set having a second modality, with the second modality being different from the first modality. The first and second data sets are processed, including encoding the first data set into one or more first vectors, and encoding the second data set into one or more second vectors. The processed multi-modal data set is analyzed, and the encoded features from the first and second modalities are iteratively and asynchronously fused. The fused modalities include combined vectors from the first and second data sets representing correlated temporal behavior. The fused vectors are then returned as output data.Type: GrantFiled: November 14, 2019Date of Patent: February 27, 2024Assignee: International Business Machines CorporationInventors: Xuan-Hong Dang, Syed Yousaf Shah, Petros Zerfos, Nancy Anne Greco
-
Publication number: 20230297881Abstract: Providing time-series forecasting by receiving target variable data and exogenous variable data, training a plurality of time-series models according to the target variable data and the exogenous variable data, determining a historical error for each of the plurality of time series models, and providing a time-series forecasting model having a lowest historical error.Type: ApplicationFiled: March 21, 2022Publication date: September 21, 2023Inventors: SYED YOUSAF SHAH, Petros ZERFOS, Xuan-Hong Dang
-
Publication number: 20230297876Abstract: Selecting a time-series forecasting pipeline by receiving target variable time-series data and exogenous variable time-series data, generating a regular forecasting pipeline comprising a model according to the target variable time-series data, generating an exogenous forecasting pipeline comprising a model according to the target variable time-series data and the exogenous variable time-series data, evaluating the regular forecasting pipeline and the exogenous forecasting pipeline, selecting a pipeline according to the evaluation, and providing the selected pipeline.Type: ApplicationFiled: March 17, 2022Publication date: September 21, 2023Inventors: Xuan-Hong Dang, SYED YOUSAF SHAH, Dhavalkumar C. Patel, Wesley M. Gifford, Petros ZERFOS
-
Patent number: 11763373Abstract: An assistive shopping cart system for guiding a user and monitoring the user's physical and cognitive conditions in a shopping environment is described. The assistive shopping cart system provides assistance and guidance to a user based on a user profile. The assistive shopping cart system routes the user through the shopping environment using a shopping route generated based on the user profile. The assistive shopping cart system also detects and tracks user physical and cognitive conditions and user actions in the shopping environment. The user actions are used to aid in the completion of a purchase/transaction and generate shopping notifications for the user and others to understand the process of the shopping experience.Type: GrantFiled: May 20, 2019Date of Patent: September 19, 2023Assignee: International Business Machines CorporationInventors: Petros Zerfos, Syed Yousaf Shah, Clifford A Pickover
-
Patent number: 11681914Abstract: Techniques regarding multivariate time series data analysis are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a time series analysis component that generates a machine learning model that discovers a dependency between multivariate time series data using an attention mechanism controlled by an uncertainty measure.Type: GrantFiled: May 8, 2020Date of Patent: June 20, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Xuan-Hong Dang, Yunqi Guo, Syed Yousaf Shah, Petros Zerfos
-
Patent number: 11586680Abstract: A system and method are provided for discovering k-nearest-neighbors to a given point within a certain distance d. The method includes constructing an index of geometries using geohashes of geometries as an indexing key to obtain an indexed set of geometries, and calculating a geohash representation of the given point with a resolution equal to a magnitude value of d. The method includes searching for a closest-prefix geometry from the indexed set using the geohash representation of the given point, and identifying geometries from the indexed set having a same prefix as the closest-prefix geometry. The method further includes calculating distances between the given point and the geometries identified from the indexed set having the same prefix as the closest-prefix geometry, and determining k geometries with respective shortest distances less than d from the geometries identified from the indexed set having the same prefix as the closest-prefix geometry.Type: GrantFiled: March 31, 2014Date of Patent: February 21, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Dakshi Agrawal, Raghu K. Ganti, Mudhakar Srivatsa, Petros Zerfos
-
Patent number: 11494720Abstract: Techniques are provided for the automated risk assessment of a document. In one embodiment, the techniques involve mapping, via a risk assessment engine, one or more sentences in a first document to one or more risk categories, identifying, via a classification engine, risk-associated language of the one or more sentences based on the one or more risk categories, mapping, via a risk assessment engine, the risk-associated language of the one or more sentences to one or more risk criterion of a risk criterion document, and generating, via a risk assessment engine, a first risk assessment based on the one or more risk criterion of the risk criterion document.Type: GrantFiled: June 30, 2020Date of Patent: November 8, 2022Assignee: International Business Machines CorporationInventors: Raji Lakshmi Akella, Xuan-Hong Dang, Syed Yousaf Shah, Petros Zerfos, Milton Orlando Laverde Echeverria, Ashley Potter
-
Publication number: 20220327058Abstract: To automate time series forecasting machine learning pipeline generation, a data allocation size of time series data may be determined based on one or more characteristics of a time series data set. The time series data may be allocated for use by candidate machine learning pipelines based on the data allocation size. Features for the time series data may be determined and cached by the candidate machine learning pipelines. Predictions of each of the candidate machine learning pipelines using at least the one or more features may be evaluated. A ranked list of machine learning pipelines may be automatically generated from the candidate machine learning pipelines for time series forecasting based upon evaluating predictions of each of the one or more candidate machine learning pipelines.Type: ApplicationFiled: March 15, 2022Publication date: October 13, 2022Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Long VU, Bei CHEN, Xuan-Hong DANG, Peter Daniel KIRCHNER, Syed Yousaf SHAH, Dhavalkumar C. PATEL, Si Er HAN, Ji Hui YANG, Jun WANG, Jing James XU, Dakuo WANG, Gregory BRAMBLE, Horst Cornelius SAMULOWITZ, Saket K. SATHE, Wesley M. GIFFORD, Petros ZERFOS
-
Publication number: 20220261598Abstract: To rank time series forecasting in machine learning pipelines, time series data may be incrementally allocated from a time series data set for testing by candidate machine learning pipelines based on seasonality or a degree of temporal dependence of the time series data. Intermediate evaluation scores may be provided by each of the candidate machine learning pipelines following each time series data allocation. One or more machine learning pipelines may be automatically selected from a ranked list of the one or more candidate machine learning pipelines based on a projected learning curve generated from the intermediate evaluation scores.Type: ApplicationFiled: October 26, 2021Publication date: August 18, 2022Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Bei CHEN, Long VU, Dhavalkumar C. PATEL, Syed Yousaf SHAH, Gregory BRAMBLE, Peter Daniel KIRCHNER, Horst Cornelius SAMULOWITZ, Xuan-Hong DANG, Petros ZERFOS
-
Publication number: 20210406788Abstract: Techniques are provided for the automated risk assessment of a document. In one embodiment, the techniques involve mapping, via a risk assessment engine, one or more sentences in a first document to one or more risk categories, identifying, via a classification engine, risk-associated language of the one or more sentences based on the one or more risk categories, mapping, via a risk assessment engine, the risk-associated language of the one or more sentences to one or more risk criterion of a risk criterion document, and generating, via a risk assessment engine, a first risk assessment based on the one or more risk criterion of the risk criterion document.Type: ApplicationFiled: June 30, 2020Publication date: December 30, 2021Inventors: Raji Lakshmi AKELLA, Xuan-Hong DANG, Syed Yousaf SHAH, Petros ZERFOS, Milton Orlando LAVERDE ECHEVERRIA, Ashley POTTER
-
Publication number: 20210350225Abstract: Techniques regarding multivariate time series data analysis are provided. For example, one or more embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor, operably coupled to the memory, and that can execute the computer executable components stored in the memory. The computer executable components can comprise a time series analysis component that generates a machine learning model that discovers a dependency between multivariate time series data using an attention mechanism controlled by an uncertainty measure.Type: ApplicationFiled: May 8, 2020Publication date: November 11, 2021Inventors: Xuan-Hong Dang, Yunqi Guo, Syed Yousaf Shah, Petros Zerfos
-
Patent number: 11121909Abstract: A computer-implemented method includes: receiving, using a processor, multiple data session records (DSRs); storing the multiple DSRs in a memory communicatively coupled to the processor; analyzing, using the processor, the stored multiple DSRs for temporal and spatial data; and determining, using the processor, quality degradation by using the temporal and spatial data for the stored multiple DSRs.Type: GrantFiled: April 11, 2019Date of Patent: September 14, 2021Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Parul Gupta, Shivkumar Kalyanaraman, Bong Jun Ko, Vinay Kumar Kolar, Ravi Kothari, Kang-Won Lee, Ramya Raghavendra, Dinesh C. Verma, Petros Zerfos
-
Publication number: 20210150315Abstract: Embodiments relate to a system, program product, and method for employing deep learning techniques to fused data across modalities. A multi-modal data set is received, including a first data set having a first modality and a second data set having a second modality, with the second modality being different from the first modality. The first and second data sets are processed, including encoding the first data set into one or more first vectors, and encoding the second data set into one or more second vectors. The processed multi-modal data set is analyzed, and the encoded features from the first and second modalities are iteratively and asynchronously fused. The fused modalities include combined vectors from the first and second data sets representing correlated temporal behavior. The fused vectors are then returned as output data.Type: ApplicationFiled: November 14, 2019Publication date: May 20, 2021Applicant: International Business Machines CorporationInventors: Xuan-Hong Dang, Syed Yousaf Shah, Petros Zerfos, Nancy Anne Greco
-
Patent number: 10958665Abstract: Methods and systems for tag-based identification include receiving a set of parameters at a user device from a remote server. A counterfeit-proof identification tag is read using a sensor in the user device using the set of parameters. Features of the counterfeit-proof identification tag are extracted in accordance with a feature extraction function, using a processor, to generate a tag bit sequence. A challenge function is applied to the extracted features to generate a result. The result is transmitted to the remote server to authenticate the counterfeit-proof identification tag. The counterfeit-proof identification tag is authenticated with a tag database at the remote server.Type: GrantFiled: September 6, 2019Date of Patent: March 23, 2021Assignee: International Business Machines CorporationInventors: Jean-Olivier Plouchart, Wendy Chong, Alberto Valdes Garcia, Petros Zerfos
-
Publication number: 20200372567Abstract: An assistive shopping cart system for guiding a user and monitoring the user's physical and cognitive conditions in a shopping environment is described. The assistive shopping cart system provides assistance and guidance to a user based on a user profile. The assistive shopping cart system routes the user through the shopping environment using a shopping route generated based on the user profile. The assistive shopping cart system also detects and tracks user physical and cognitive conditions and user actions in the shopping environment. The user actions are used to aid in the completion of a purchase/transaction and generate shopping notifications for the user and others to understand the process of the shopping experience.Type: ApplicationFiled: May 20, 2019Publication date: November 26, 2020Inventors: PETROS ZERFOS, SYED YOUSAF SHAH, CLIFFORD A. PICKOVER
-
Publication number: 20200328934Abstract: A computer-implemented method includes: receiving, using a processor, multiple data session records (DSRs); storing the multiple DSRs in a memory communicatively coupled to the processor; analyzing, using the processor, the stored multiple DSRs for temporal and spatial data; and determining, using the processor, quality degradation by using the temporal and spatial data for the stored multiple DSRs.Type: ApplicationFiled: April 11, 2019Publication date: October 15, 2020Inventors: Parul Gupta, Shivkumar Kalyanaraman, Bong Jun KO, Vinay Kumar Kolar, Ravi Kothari, Kang-Won Lee, Ramya Raghavendra, Dinesh C. Verma, Petros Zerfos
-
Publication number: 20190394213Abstract: Methods and systems for tag-based identification include receiving a set of parameters at a user device from a remote server. A counterfeit-proof identification tag is read using a sensor in the user device using the set of parameters. Features of the counterfeit-proof identification tag are extracted in accordance with a feature extraction function, using a processor, to generate a tag bit sequence. A challenge function is applied to the extracted features to generate a result. The result is transmitted to the remote server to authenticate the counterfeit-proof identification tag. The counterfeit-proof identification tag is authenticated with a tag database at the remote server.Type: ApplicationFiled: September 6, 2019Publication date: December 26, 2019Inventors: Jean-Olivier Plouchart, Wendy Chong, Alberto Valdes Garcia, Petros Zerfos
-
Publication number: 20190354836Abstract: Techniques for determining temporal dependencies and inter-time series dependencies in multi-variate time series data are provided. For example, embodiments described herein can comprise a system, which can comprise a memory that can store computer executable components. The system can also comprise a processor that can execute the computer executable components stored in the memory. The computer executable components can include: a computing component that encodes recurrent neural networks (RNNs) with time series data and determines decoded RNNs based on temporal context vectors, to determine temporal dependencies in time series data; a combining component that combines the decoded RNNs and determines an inter-time series dependence context vector and an RNN dependence decoder; and an analysis component that determines inter-time series dependencies in the time series data and forecast values for the time series data based on the inter-time series dependence context vector and the RNN dependence decoder.Type: ApplicationFiled: May 17, 2018Publication date: November 21, 2019Inventors: Syed Yousaf Shah, Xuan-Hong Dang, Petros Zerfos