Patents by Inventor Tsai Ching Lu

Tsai Ching Lu 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: 11928971
    Abstract: A method includes obtaining a plurality of data sets, where each data set of the plurality of data sets includes multivariate time series data for a respective sample period of a plurality of sample periods. The method also includes, for each data set of the plurality of data sets, determining recurrence data indicative of recurrent states in the data set and determining, based on the recurrence data, determinism values of a determinism metric and laminarity values of a laminarity metric. The method further includes determining that a particular data set of the plurality of data sets includes data representing an anomalous state based on a determinism-laminarity curve representing the particular data set, where the determinism-laminarity curve is based on the determinism values of the particular data set and the laminarity values of the particular data set. The method also includes generating output data indicating the anomalous state.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: March 12, 2024
    Assignee: BOEING COMPANY
    Inventors: Nigel Stepp, Tsai-Ching Lu, Franz David Betz
  • Patent number: 11907833
    Abstract: A method includes receiving input data including a plurality of feature vectors and labeling each feature vector based on a temporal proximity of the feature vector to occurrence of a fault. Feature vectors that are within a threshold temporal proximity to the occurrence of the fault are labeled with a first label value and other feature vectors are labeled with a second label value. The method includes determining, for each feature vector of a subset, a probability that the label associated with the feature vector is correct. The subset includes feature vectors having labels that indicate the first label value. The method includes reassigning labels of one or more feature vectors of the subset having a probability that fails to satisfy a probability threshold and, after reassigning the labels, training an aircraft fault prediction classifier using supervised training data including the plurality of feature vectors and the labels.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: February 20, 2024
    Assignee: THE BOEING COMPANY
    Inventors: Rashmi Sundareswara, Franz David Betz, Tsai-Ching Lu
  • Publication number: 20230394888
    Abstract: A method, apparatus, system and computer program product for managing a platform. A computer system generates a training dataset comprising historical metric values from historical sensor information for a set of metrics for a part and historical maintenance events for the part. The computer system trains a machine learning model using the training dataset. The computer system determines maintenance thresholds for a metric in the set of metrics for performing maintenance on the part using the machine learning model trained with the training dataset. The computer system selects a maintenance threshold from the maintenance thresholds meeting an objective, wherein the maintenance threshold is used to determine when a maintenance action is needed for the part.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 7, 2023
    Inventors: Alexander Waagen, Tsai-Ching Lu
  • Publication number: 20230394889
    Abstract: A method, apparatus, system, and computer program product for managing a platform. A computer system generates a training dataset comprising historical metric values from historical sensor information for a set of metrics for a part and historical maintenance events for the part. The computer system trains a machine learning model using the training dataset. The computer system determines different maintenance thresholds for maintenance parameters for a metric in the set of metrics for performing maintenance on the part using the machine learning model trained with the training dataset. The computer system selects maintenance thresholds for the maintenance parameters from the maintenance thresholds meeting an objective to form a maintenance plan. The maintenance plan is used to determine when a maintenance action is needed for the part.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 7, 2023
    Inventors: Alexander Waagen, Aruna Jammalamadaka, Alice A. Murphy, Derek S. Fok, Douglas Peter Knapp, Tsai-Ching Lu
  • Publication number: 20230388202
    Abstract: Methods and systems are provided for inferred information propagation for aircraft prognostics. The method includes receiving, by a processor, an original time-series of data points for a component as an input; preprocessing the input to divide the original time-series of data into subsets of data by applying a time-window over the original time-series of data points; and computing, by the processor, a Mutual Information (MI) value for each pair of variables within each subset of data. The method also includes constructing, by the processor, a sequence of relationship graphs using the computed MI values; clustering, by the processor, each relationship graph; and analyzing, by the processor, the time-ordered sequence of clustered relationship graphs to identify features in the component.
    Type: Application
    Filed: August 7, 2023
    Publication date: November 30, 2023
    Inventors: Charles Eugene Martin, Tsai-Ching Lu, Steve Slaughter, Alice A. Murphy
  • Patent number: 11816590
    Abstract: A method, system, and computer program product for predicting abnormal operation of at least one component of a machine is provided. Real time monitoring data from an operating machine is received and monitoring features that are informative of likely abnormal operation are extracted and/or calculated. The monitoring features are applied to a prediction matrix that outputs probabilities of abnormal operation within one or more prediction time horizons. If the output probabilities exceed a threshold probability, then an alert can be output. Maintenance can be automatically scheduled in response to the alert.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: November 14, 2023
    Assignee: The Boeing Company
    Inventors: Shahriar Alam, Qin Jiang, Franz D. Betz, Tsai-Ching Lu, John E. Harrison, John L. Ross
  • Patent number: 11671436
    Abstract: Described is a system for producing indicators and warnings of adversarial activities. The system receives multiple networks of transactional data from different sources. Each node of a network of transactional data represents an entity, and each edge represents a relation between entities. A worldview graph is generated by merging the multiple networks of transactional data. Suspicious subgraph regions related to an adversarial activity are identified in the worldview graph through activity detection. The suspicious subgraph regions are used to generate and transmit an alert of the adversarial activity.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: June 6, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Jiejun Xu, Kang-Yu Ni, Alexei Kopylov, Shane M. Roach, Tsai-Ching Lu
  • Patent number: 11645590
    Abstract: Described is a system for learning and predicting key phrases. The system learns based on a dataset of historical forecasting questions, their associated time-series data for a quantity of interest, and associated keyword sets. The system learns the optimal policy of actions to take given the associated keyword sets and the optimal set of keywords which are predictive of the quantity of interest. Given a new forecasting question, the system extracts an initial keyword set from a new forecasting question, which are perturbed to generate an optimal predictive key-phrase set. Key-phrase time-series data are extracted for the optimal predictive key-phrase set, which are used to generate a forecast of future values for a value of interest. The forecast can be used for a variety of purposes, such as advertising online.
    Type: Grant
    Filed: April 27, 2022
    Date of Patent: May 9, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Victor Ardulov, Aruna Jammalamadaka, Tsai-Ching Lu
  • Patent number: 11625562
    Abstract: A method for generating human-machine hybrid predictions of answers to forecasting problems includes: parsing text of an individual forecasting problem to identify keywords; generating machine models based on the keywords; scraping data sources based on the keywords to collect scraped data relevant to the individual forecasting problem; providing the scraped data to the machine models; receiving machine predictions of answers to the individual forecasting problem from the machine models based on the scraped data; providing, by the computer system via a user interface, the scraped data to human participants; receiving, by the computer system via the user interface, human predictions of answers to the individual forecasting problem from the human participants; aggregating the machine predictions with the human predictions to generate aggregated predictions; and generating and outputting a hybrid prediction based on the aggregated predictions.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: April 11, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: David J. Huber, Tsai-Ching Lu, Nigel D. Stepp, Aruna Jammalamadaka, Hyun J. Kim, Samuel D. Johnson
  • Patent number: 11598880
    Abstract: An apparatus for detecting a fault state of an aircraft is provided. The apparatus accesses a training set of flight data for the aircraft. The training set includes observations of the flight data, each observation of the flight data includes measurements of properties selected and transformed into a set of features. The apparatus builds a generative adversarial network including a generative model and a discriminative model using the training set and the set of features, and builds an anomaly detection model to predict the fault state of the aircraft. The anomaly detection model is trained using the training set of flight data, simulated flight data generated by the generative model, and a subset of features from the set of features. The apparatus deploys the anomaly detection model to predict the fault state of the aircraft using additional observations of the flight data.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: March 7, 2023
    Assignee: The Boeing Company
    Inventors: Tsai-Ching Lu, Charles E. Martin, Stephen C. Slaughter, Richard Patrick
  • Patent number: 11580794
    Abstract: A method includes obtaining sensor data captured by a sensor of an aircraft during a power up event. The sensor data includes multiple parameter values, each corresponding to a sample period. The method further includes determining a set of delta values, each indicating a difference between parameter values for consecutive sample periods of the sensor data. The method further includes determining a set of quantized delta values by assigning the delta values to quantization bins based on magnitudes of the delta values. The method further includes determining a normalized count of delta values for each quantization bin. The method further includes comparing the normalized counts of delta values to anomaly detection thresholds. The method further includes generating, based on the comparisons, output indicating whether the sensor data is indicative of an operational anomaly.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: February 14, 2023
    Assignee: THE BOEING COMPANY
    Inventors: Dmitriy Korchev, Charles E. Martin, Tsai-Ching Lu, Steve C. Slaughter, Alice A. Murphy, Derek Samuel Fok
  • Patent number: 11549611
    Abstract: Systems and methods for fault prediction through a Bayesian framework are provided. Fault prediction for a valve system may be provided by generating a Bayesian framework by collecting a plurality of historical parameters related to opening and closing of a valve across a plurality of operational legs; generating a plurality of historical feature metrics based on the plurality of historical parameters; in response to detecting a fault, defining a prefault state corresponding to the historical feature metrics; monitoring a plurality of operational parameters related to opening and closing of the valve during a given operational phase of an operational leg; generating a plurality of operational feature metrics based on the plurality of operational parameters monitored during the given operational phase; and in response to determining, using the generated Bayesian framework, that the operational feature metrics indicate the prefault state of the subsystem, generating a notification.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: January 10, 2023
    Assignee: THE BOEING COMPANY
    Inventors: Rashmi Sundareswara, Tsai-Ching Lu, Franz D. Betz
  • Patent number: 11551156
    Abstract: A method for computing a human-machine hybrid ensemble prediction includes: receiving an individual forecasting question (IFP); classifying the IFP into one of a plurality of canonical question topics; identifying machine models associated with the canonical question topic; for each of the machine models: receiving, from one of a plurality of human participants: a first task input including a selection of sets of training data; a second task input including selections of portions of the selected sets of training data; and a third task input including model parameters to configure the machine model; training the machine model in accordance with the first, second, and third task inputs; and computing a machine model forecast based on the trained machine model; computing an aggregated forecast from machine model forecasts computed by the machine models; and sending an alert in response to determining that the aggregated forecast satisfies a threshold condition.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 10, 2023
    Assignee: HRL LABORATORIES, LLC.
    Inventors: Aruna Jammalamadaka, David J. Huber, Samuel D. Johnson, Tsai-Ching Lu
  • Publication number: 20220398360
    Abstract: A method for remaining useful life prediction includes generating parameter data related to a performance of an electro-mechanical element. The method includes generating simulated behavior data of the electro-mechanical element by executing a digital-twin simulation model based on estimated operating conditions, and generating deviation data that characterizes how the parameter data deviates from the simulated behavior data. The deviation data includes a deterministic component and a stochastic component. The method includes generating extrapolated deviation data by extrapolating the deterministic component and the stochastic component of the deviation data forward in time, calculating a remaining useful life of the electro-mechanical element in response to the extrapolated deviation data, and reporting the remaining useful life to a person associated with the vehicle.
    Type: Application
    Filed: March 2, 2022
    Publication date: December 15, 2022
    Applicant: The Boeing Company
    Inventors: Nigel D. Stepp, Alexander N. Waagen, Tsai-Ching Lu
  • Publication number: 20220398550
    Abstract: A method, apparatus, system, and computer program product for managing a platform. Sensor information for a platform health of the platform is received from a sensor system for the platform. The sensor information for the platform health of the platform is sent by a computer system into a machine learning model trained using historical sensor information indicating a historical platform health and historical context information corresponding to the historical sensor information in which the historical context information is for a set of operating conditions. A remaining useful life of a component in the platform is received by the computer system from the machine learning model.
    Type: Application
    Filed: March 9, 2022
    Publication date: December 15, 2022
    Inventors: Kang-Yu Ni, Tsai-Ching Lu, Alexander Norman Waagen, Aruna Rani Jammalamadaka, Charles Eugene Martin, Alice Ann Murphy, Derek Samuel Fok, Kirby Joe Keller, Douglas Peter Knapp
  • Patent number: 11475334
    Abstract: Described is a system for large-scale event prediction and a corresponding response. The system, using an agent-based model, predicts how many users (agent accounts) on a social media platform will become activists related to a large-scale event. This process is accomplished using both Before and During models. Before the large-scale event, the system operates to generate agent attributes and a posting network based on posts on the social media platform. During the large-scale event and based on the agent attributes and posting network, the system determines if a social media user (agent account) will become an activist of the large-scale event and a corresponding magnitude of the large-scale event. Depending on the magnitude, the system can implement a responsive measure and control a device based on the prediction of the activists.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: October 18, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Krishna Bathina, Aruna Jammalamadaka, Jiejun Xu, Tsai-Ching Lu
  • Publication number: 20220327943
    Abstract: A method includes obtaining a plurality of data sets, where each data set of the plurality of data sets includes multivariate time series data for a respective sample period of a plurality of sample periods. The method also includes, for each data set of the plurality of data sets, determining recurrence data indicative of recurrent states in the data set and determining, based on the recurrence data, determinism values of a determinism metric and laminarity values of a laminarity metric. The method further includes determining that a particular data set of the plurality of data sets includes data representing an anomalous state based on a determinism-laminarity curve representing the particular data set, where the determinism-laminarity curve is based on the determinism values of the particular data set and the laminarity values of the particular data set. The method also includes generating output data indicating the anomalous state.
    Type: Application
    Filed: December 16, 2021
    Publication date: October 13, 2022
    Inventors: Nigel Stepp, Tsai-Ching Lu, Franz David Betz
  • Publication number: 20220261603
    Abstract: Described is a system for learning and predicting key phrases. The system learns based on a dataset of historical forecasting questions, their associated time-series data for a quantity of interest, and associated keyword sets. The system learns the optimal policy of actions to take given the associated keyword sets and the optimal set of keywords which are predictive of the quantity of interest. Given a new forecasting question, the system extracts an initial keyword set from a new forecasting question, which are perturbed to generate an optimal predictive key-phrase set. Key-phrase time-series data are extracted for the optimal predictive key-phrase set, which are used to generate a forecast of future values for a value of interest. The forecast can be used for a variety of purposes, such as advertising online.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 18, 2022
    Inventors: Victor Ardulov, Aruna Jammalamadaka, Tsai-Ching Lu
  • Patent number: 11394725
    Abstract: Described is a system for network threat detection. The system identifies a targeted sub-network representing a threat within a multi-layer network having members. The targeted sub-network is identified with differential privacy protection, such that privacy of individuals that are not in the targeted sub-network is protected. The system causes an action to be generated, the action being one of generating an alert of a threat, initiating monitoring of the non-benign persons, or disabling network access of the non-benign persons.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: July 19, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Chongwon Cho, Tsai-Ching Lu, Hyun (Tiffany) J. Kim
  • Publication number: 20220198279
    Abstract: A system and method for drift detection is disclosed. The method may comprise training and testing an autoencoder, and using the trained and tested autoencoder to automatically detect data drift. The training may include initializing the autoencoder and training the autoencoder based on a first set of sensor data. The testing of the autoencoder with a second set of sensor data may comprise: for an empirical distribution of the reconstruction errors of the second set of sensor data, determining a value of a reconstruction error at the percentile threshold; determining that data drift is not present when the reconstruction error of the second set of sensor data is less than a threshold; and calculating a deviation output for at least one of the one or more sensors. Using the trained and tested autoencoder to automatically detect data drift in sensor data.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 23, 2022
    Applicant: The Boeing Company
    Inventors: Rashmi Nandipura Sundareswara, James Schimert, Tsai-Ching Lu, Franz David Betz