Patents by Inventor Heasoo Hwang
Heasoo Hwang 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: 11298067Abstract: A method for classifying types of heartbeats includes obtaining a dataset including multiple heartbeat waveform data, generating, from the dataset, input data regarding a heartbeat waveform for training and generating a learning model to which the generated input data is input and from which a heartbeat type of the heartbeat waveform for training is output, training the learning model by determining a loss weight of each batch sampled from the dataset and determining a loss function based on the loss weight of each batch, and inputting a heartbeat waveform for test to the learning model and classifying a heartbeat type of the heartbeat waveform for test.Type: GrantFiled: June 13, 2019Date of Patent: April 12, 2022Assignee: University of Seoul Industry Cooperation FoundationInventors: Heasoo Hwang, Sellami Ali
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Publication number: 20200289010Abstract: A method for classifying types of heartbeats includes obtaining a dataset including multiple heartbeat waveform data, generating, from the dataset, input data regarding a heartbeat waveform for training and generating a learning model to which the generated input data is input and from which a heartbeat type of the heartbeat waveform for training is output, training the learning model by determining a loss weight of each batch sampled from the dataset and determining a loss function based on the loss weight of each batch, and inputting a heartbeat waveform for test to the learning model and classifying a heartbeat type of the heartbeat waveform for test.Type: ApplicationFiled: June 13, 2019Publication date: September 17, 2020Inventors: HEASOO HWANG, SELLAMI ALI
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Patent number: 10521435Abstract: A method that includes generating, in a query pre-processor, a set of pre-computed materialized sub-graphs by executing a pre-processing dynamic random-walk based search for a bin of terms. The method also includes receiving, in a query processor, a search query having at least one search query term. In response to receiving the search query, the method includes accessing the set of pre-computed materialized sub-graphs. The accessing includes accessing a text index based on the search query term to retrieve a corresponding term group identifier and accessing the corresponding pre-computed materialized sub-graph based on the term group identifier. The method also includes executing a dynamic random-walk based search on only the corresponding pre-computed materialized sub-graph and based on the executing, retrieving nodes in the dataset and transmitting the nodes as results of the query.Type: GrantFiled: September 21, 2015Date of Patent: December 31, 2019Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Andrey Balmin, Heasoo Hwang, Erik Nijkamp, Berthold Reinwald
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Publication number: 20160012059Abstract: A method that includes generating, in a query pre-processor, a set of pre-computed materialized sub-graphs by executing a pre-processing dynamic random-walk based search for a bin of terms. The method also includes receiving, in a query processor, a search query having at least one search query term. In response to receiving the search query, the method includes accessing the set of pre-computed materialized sub-graphs. The accessing includes accessing a text index based on the search query term to retrieve a corresponding term group identifier and accessing the corresponding pre-computed materialized sub-graph based on the term group identifier. The method also includes executing a dynamic random-walk based search on only the corresponding pre-computed materialized sub-graph and based on the executing, retrieving nodes in the dataset and transmitting the nodes as results of the query.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Andrey Balmin, Heasoo Hwang, Erik Nijkamp, Berthold Reinwald
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Patent number: 9171077Abstract: According to one embodiment of the present invention, a method for processing a query is provided. The method includes generating a set of pre-computed materialized sub-graphs from a dataset and receiving a search query having one or more search query terms. A particular one of the pre-computed materialized sub-graphs is accessed and a dynamic authority-based keyword search is executed on the particular one of the pre-computed materialized sub-graphs. Nodes in the dataset are then retrieved based on the executing, and a response to the search query is provided which includes the retrieved nodes.Type: GrantFiled: February 27, 2009Date of Patent: October 27, 2015Assignee: International Business Machines CorporationInventors: Andrey Balmin, Heasoo Hwang, Erik Nijkamp, Berthold Reinwald
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Patent number: 8655435Abstract: An apparatus and a method to generate an atrial fibrillation prediction model, and an apparatus and a method to predict atrial fibrillation are provided. An atrial fibrillation (AF) prediction model generating apparatus includes a feature extractor configured to extract T-wave features in a predetermined time period from electrocardiogram data and generate a T-wave feature profile based on the extracted features, and a prediction model generator configured to classify the generated T-wave feature profile and generate an AF prediction model using the classified feature profile.Type: GrantFiled: July 30, 2012Date of Patent: February 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Heasoo Hwang, Hyoa Kang
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Publication number: 20130204149Abstract: An apparatus and a method to generate an atrial fibrillation prediction model, and an apparatus and a method to predict atrial fibrillation are provided. An atrial fibrillation (AF) prediction model generating apparatus includes a feature extractor configured to extract T-wave features in a predetermined time period from electrocardiogram data and generate a T-wave feature profile based on the extracted features, and a prediction model generator configured to classify the generated T-wave feature profile and generate an AF prediction model using the classified feature profile.Type: ApplicationFiled: July 30, 2012Publication date: August 8, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Heasoo HWANG, Hyoa Kang
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Patent number: 8326847Abstract: A system, method and computer program product for executing a query on linked data sources. Embodiments of the invention generate an instance graph expressing relationships between objects in the linked data sources and receive a query including at least first and second search terms. The first search term is then executed on the instance graph and a summary graph is generated using the results of the executing step. A second search term is then executed on the summary graph.Type: GrantFiled: March 22, 2008Date of Patent: December 4, 2012Assignee: International Business Machines CorporationInventors: Andrey Balmin, Heasoo Hwang, Mir Hamid Pirahesh, Berthold Reinwald
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Publication number: 20100241647Abstract: Described is a search-related technology in which context information regarding a user's prior search actions is used in making query recommendations for a current user action, such as a query or click. To determine whether each set or subset of context information is relevant to the user action, data obtained from a query log is evaluated. More particularly, a query transition (query-query) graph and a query click (query-URL) graph are extracted from the query log; vectors are computed for the current action and each context/sub-context and evaluated against vectors in the graphs to determine current action-to-context similarity. Also described is using similar context to provide the query recommendations, using parameters to control the similarity strictness, and/or whether more recent context information is more relevant than less recent context information, and using context information to distinguish between user sessions.Type: ApplicationFiled: March 23, 2009Publication date: September 23, 2010Applicant: Microsoft CorporationInventors: Alexandros Ntoulas, Heasoo Hwang, Lise C. Getoor, Stelios Paparizos, Hady Wirawan Lauw
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Publication number: 20100223266Abstract: According to one embodiment of the present invention, a method for processing a query is provided. The method includes generating a set of pre-computed materialized sub-graphs from a dataset and receiving a search query having one or more search query terms. A particular one of the pre-computed materialized sub-graphs is accessed and a dynamic authority-based keyword search is executed on the particular one of the pre-computed materialized sub-graphs. Nodes in the dataset are then retrieved based on the executing, and a response to the search query is provided which includes the retrieved nodes.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Andrey Balmin, Heasoo Hwang, Erik Nijkamp, Berthold Reinwald
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Publication number: 20090240682Abstract: A system, method and computer program product for executing a query on linked data sources. Embodiments of the invention generate an instance graph expressing relationships between objects in the linked data sources and receive a query including at least first and second search terms. The first search term is then executed on the instance graph and a summary graph is generated using the results of the executing step. A second search term is then executed on the summary graph.Type: ApplicationFiled: March 22, 2008Publication date: September 24, 2009Applicant: International Business Machines CorporationInventors: Andrey Balmin, Heasoo Hwang, Mir Hamid Pirahesh, Berthold Reinwald