Patents by Inventor Yanchi Liu
Yanchi Liu 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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Publication number: 20240160955Abstract: A computer-implemented method for optimized decision making that includes labeling text data extracted from an inquiry, and linking labeled text to a knowledge graph entity. The method may further include retrieving from the knowledge graph reasoning paths; and removing irrelevant knowledge graph reasoning paths using a language model trained artificial intelligence consistent with the labeling of the text data. The method may further include employing remaining relevant graph reasoning paths to provide an answer prediction.Type: ApplicationFiled: November 7, 2023Publication date: May 16, 2024Inventors: Xujiang Zhao, Yanchi Liu, Wei Cheng, Haifeng Chen
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Publication number: 20240134736Abstract: Methods and systems for anomaly detection include encoding a multivariate time series and a multi-type event sequence using respective transformers and an aggregation network to generate a feature vector. Anomaly detection is performed using the feature vector to identify an anomaly within a system. A corrective action is performed responsive to the anomaly to correct or mitigate an effect of the anomaly. The detected anomaly can be used in a healthcare context to support decision making by medical professionals with respect to the treatment of a patient. The encoding may include machine learning models to implement the transformers and the aggregation network using deep learning.Type: ApplicationFiled: October 23, 2023Publication date: April 25, 2024Inventors: Yuncong Chen, LuAn Tang, Yanchi Liu, Zhengzhang Chen, Haifeng Chen
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Publication number: 20240061998Abstract: A computer-implemented method for employing a time-series-to-text generation model to generate accurate description texts is provided. The method includes passing time series data through a time series encoder and a multilayer perceptron (MLP) classifier to obtain predicted concept labels, converting the predicted concept labels, by a serializer, to a text token sequence by concatenating an aspect term and an option term of every aspect, inputting the text token sequence into a pretrained language model including a bidirectional encoder and an autoregressive decoder, and using adapter layers to fine-tune the pretrained language model to generate description texts.Type: ApplicationFiled: July 26, 2023Publication date: February 22, 2024Inventors: Yuncong Chen, Yanchi Liu, Wenchao Yu, Haifeng Chen
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Publication number: 20240064161Abstract: A computer-implemented method for employing a graph-based log anomaly detection framework to detect relational anomalies in system logs is provided. The method includes collecting log events from systems or applications or sensors or instruments, constructing dynamic graphs to describe relationships among the log events and log fields by using a sliding window with a fixed time interval to snapshot a batch of the log events, capturing sequential patterns by employing temporal-attentive transformers to learn temporal dependencies within the sequential patterns, and detecting anomalous patterns in the log events based on relationships between the log events and temporal context determined from the temporal-attentive transformers.Type: ApplicationFiled: July 26, 2023Publication date: February 22, 2024Inventors: Yanchi Liu, Haifeng Chen, Yufei Li
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Patent number: 11842271Abstract: Methods and systems for allocating network resources responsive to network traffic include modeling spatial correlations between fine spatial granularity traffic and coarse spatial granularity traffic for different sites and regions to determine spatial feature vectors for one or more sites in a network. Temporal correlations at a fine spatial granularity are modeled across multiple temporal scales, based on the spatial feature vectors. Temporal correlations at a coarse spatial granularity are modeled across multiple temporal scales, based on the spatial feature vectors. A traffic flow prediction is determined for the one or more sites in the network, based on the temporal correlations at the fine spatial granularity and the temporal correlations at the coarse spatial granularity. Network resources are provisioned at the one or more sites in accordance with the traffic flow prediction.Type: GrantFiled: August 26, 2020Date of Patent: December 12, 2023Assignee: NEC CorporationInventors: Yanchi Liu, Wei Cheng, Bo Zong, LuAn Tang, Haifeng Chen, Denghui Zhang
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Publication number: 20230252139Abstract: A method for implementing a self-attentive encoder-decoder transformer framework for anomaly detection in event sequences is presented. The method includes feeding event content information into a content-awareness layer to generate event representations, inputting, into an encoder, event sequences of two hierarchies to capture long-term and short-term patterns and to generate feature maps, adding, in the decoder, a special sequence token at a beginning of an input sequence under detection, during a training stage, applying a one-class objective to bound the decoded special sequence token with a reconstruction loss for sequence forecasting using the generated feature maps from the encoder, and during a testing stage, labeling any event representation whose decoded special sequence token lies outside a hypersphere as an anomaly.Type: ApplicationFiled: January 20, 2023Publication date: August 10, 2023Inventors: Yanchi Liu, Xuchao Zhang, Haifeng Chen, Wei Cheng, Shengming Zhang
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Patent number: 11650351Abstract: A method for employing a unified semi-supervised deep learning (DL) framework for turbulence forecasting is presented. The method includes extracting historical and forecasted weather features of a spatial region, calculating turbulence indexes to fill feature cubes, each feature cube representing a grid-based 3D region, and building an encoder-decoder framework based on convolutional long short-term memory (ConvLSTM) to model spatio-temporal correlations or patterns causing turbulence. The method further includes employing a dual label guessing component to dynamically integrate complementary signals from a turbulence forecasting network and a turbulence detection network to generate pseudo-labels, reweighing the generated pseudo-labels by a heuristic label quality detector based on KL-Divergence, applying a hybrid loss function to predict turbulence conditions, and generating a turbulence dataset including the predicted turbulence conditions.Type: GrantFiled: February 2, 2021Date of Patent: May 16, 2023Assignee: NEC CorporationInventors: Yanchi Liu, Jingchao Ni, Bo Zong, Haifeng Chen, Zhengzhang Chen, Wei Cheng, Denghui Zhang
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Publication number: 20230076127Abstract: Systems and methods are provided for adapting a pretrained language model to perform cybersecurity-specific named entity recognition and relation extraction. The method includes introducing a pretrained language model and a corpus of security text to a model adaptor, and generating a fine-tuned language model through unsupervised training utilizing the security text corpus. The method further includes combining a joint extraction model from a head for joint extraction with the fine-tuned language model to form an adapted joint extraction model that can perform entity and relation label prediction. The method further includes applying distant labels to security text in the corpus of security text to produce security text with distant labels, and performing Distant Supervision Training for joint extraction on the adapted joint extraction model using the security text to transform the adapted joint extraction model into a Security Language Model for name-entity recognition (NER) and relation extraction (RE).Type: ApplicationFiled: August 8, 2022Publication date: March 9, 2023Inventors: Xiao Yu, Yanchi Liu, Haifeng Chen, Yufei Li
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Publication number: 20220343068Abstract: A method for detecting business intent from a business intent corpus by employing an Intent Detection via Multi-hop Unified Syntactic Graph (IDMG) is presented. The method includes parsing each text sample representing a business need description to extract syntactic information including at least tokens and words, tokenizing the words of the syntactic information to generate sub-words for each of the words by employing a multi-lingual pre-trained language model, aligning the generated sub-words to the tokens of the syntactic information to match ground-truth intent actions and objects to the tokenized sub-words, generating a unified syntactic graph, encoding, via a multi-hop unified syntactic graph encoder, the unified syntactic graph to generate an output, and predicting an intent action and object from the output.Type: ApplicationFiled: April 12, 2022Publication date: October 27, 2022Inventors: Xuchao Zhang, Yanchi Liu, Haifeng Chen
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Publication number: 20220343159Abstract: Systems and methods are provided for detail matching. The method includes training a feature classifier to identify technical features, and training a neural network model for a trained importance calculator to calculate an importance value for each identified technical feature. The method further includes receiving a specification sheet including a plurality of technical features, and receiving a plurality of descriptive sheets each including a plurality of technical features. The method further includes identifying the technical features in the specification sheet and the plurality of descriptive sheets using the trained feature classifier, and calculating an importance for each identified technical feature using the trained feature importance calculator.Type: ApplicationFiled: April 14, 2022Publication date: October 27, 2022Inventors: Yanchi Liu, Haifeng Chen, Xuchao Zhang
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Publication number: 20220261551Abstract: A method for employing a knowledge-driven pre-training framework for learning product representation is presented. The method includes learning contextual semantics of a product domain by a language acquisition stage including a context encoder and two language acquisition tasks, obtaining multi-faceted product knowledge by a knowledge acquisition stage including a knowledge encoder, skeleton attention layers, and three heterogeneous embedding guided knowledge acquisition tasks, generating local product representations defined as knowledge copies (KC) each capturing one facet of the multi-faceted product knowledge, and generating final product representation during a fine-tuning stage by combining all the KCs through a gating network.Type: ApplicationFiled: January 26, 2022Publication date: August 18, 2022Inventors: Yanchi Liu, Bo Zong, Haifeng Chen, Xuchao Zhang, Denghui Zhang
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Publication number: 20220237377Abstract: Methods and systems for natural language processing include generating an encoder that includes a global part and a local part, where the global part encodes multi-hop relations between words in an input and where the local part encodes one-hop relations between words in the input. The encoder is trained to form a graph that represents tokens of an input text as nodes and that represents relations between the tokens as edges between the nodes.Type: ApplicationFiled: January 24, 2022Publication date: July 28, 2022Inventors: Xuchao Zhang, Bo Zong, Yanchi Liu, Haifeng Chen
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Publication number: 20220237391Abstract: Systems and methods are provided for Cross-lingual Transfer Interpretation (CTI). The method includes receiving text corpus data including premise-hypothesis pairs with a relationship label in a source language, and conducting a source to target language translation. The method further includes performing a feature importance extraction, where an integrated gradient is applied to assign an importance score to each input feature, and performing a cross-lingual feature alignment, where tokens in the source language are aligned with tokens in the target language for both the premise and the hypothesis based on semantic similarity. The method further includes performing a qualitative analysis, where the importance score of each token can be compared between the source language and the target language according to a feature alignment result.Type: ApplicationFiled: January 24, 2022Publication date: July 28, 2022Inventors: Xuchao Zhang, Bo Zong, Haifeng Chen, Yanchi Liu
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Publication number: 20220075945Abstract: A computer-implemented method is provided for cross-lingual transfer. The method includes randomly masking a source corpus and a target corpus to obtain a masked source corpus and a masked target corpus. The method further includes tokenizing, by pretrained Natural Language Processing (NLP) models, the masked source corpus and the masked target corpus to obtain source tokens and target tokens. The method also includes transforming the source tokens and the target tokens into a source dependency parsing tree and a target dependency parsing tree. The method additionally includes inputting the source dependency parsing tree and the target dependency parsing tree into a graph encoder pretrained on a translation language modeling task to extract common language information for transfer. The method further includes fine-tuning the graph encoder and a down-stream network for a specific NLP down-stream task.Type: ApplicationFiled: September 1, 2021Publication date: March 10, 2022Inventors: Xuchao Zhang, Yanchi Liu, Bo Zong, Wei Cheng, Haifeng Chen, Junxiang Wang
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Publication number: 20220044200Abstract: A method performs actions based on business need matching. A set of business need documents are filtered for relevance with respect to a query business need document to remove irrelevant documents based on business need relevance criteria. Hidden business intentions in remaining business need documents are extracted from the set after the filtering. For the query document with respect to the remaining business need documents, the following are computed: a business intention-based matching score, a business entity-based matching score, and an action modeling based matching score. Using an ensemble method, the scores are integrated into a final score, where higher scoring ones of the remaining business need documents more match a business need of the query business need document. Using an automated manufacturing system, a hardware item is co-manufactured responsive to a joint manufacturing venture derived from the final score.Type: ApplicationFiled: August 2, 2021Publication date: February 10, 2022Inventors: Bo Zong, Yanchi Liu, Haifeng Chen, Xuchao Zhang
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Publication number: 20210255363Abstract: A method for employing a unified semi-supervised deep learning (DL) framework for turbulence forecasting is presented. The method includes extracting historical and forecasted weather features of a spatial region, calculating turbulence indexes to fill feature cubes, each feature cube representing a grid-based 3D region, and building an encoder-decoder framework based on convolutional long short-term memory (ConvLSTM) to model spatio-temporal correlations or patterns causing turbulence. The method further includes employing a dual label guessing component to dynamically integrate complementary signals from a turbulence forecasting network and a turbulence detection network to generate pseudo-labels, reweighing the generated pseudo-labels by a heuristic label quality detector based on KL-Divergence, applying a hybrid loss function to predict turbulence conditions, and generating a turbulence dataset including the predicted turbulence conditions.Type: ApplicationFiled: February 2, 2021Publication date: August 19, 2021Inventors: Yanchi Liu, Jingchao Ni, Bo Zong, Haifeng Chen, Zhengzhang Chen, Wei Cheng, Denghui Zhang
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Publication number: 20210064999Abstract: Methods and systems for allocating network resources responsive to network traffic include modeling spatial correlations between fine spatial granularity traffic and coarse spatial granularity traffic for different sites and regions to determine spatial feature vectors for one or more sites in a network. Temporal correlations at a fine spatial granularity are modeled across multiple temporal scales, based on the spatial feature vectors. Temporal correlations at a coarse spatial granularity are modeled across multiple temporal scales, based on the spatial feature vectors. A traffic flow prediction is determined for the one or more sites in the network, based on the temporal correlations at the fine spatial granularity and the temporal correlations at the coarse spatial granularity. Network resources are provisioned at the one or more sites in accordance with the traffic flow prediction.Type: ApplicationFiled: August 26, 2020Publication date: March 4, 2021Inventors: Yanchi Liu, Wei Cheng, Bo Zong, LuAn Tang, Haifeng Chen, Denghui Zhang
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Patent number: 9756518Abstract: Methods and apparatus for detecting a traffic suppression turning point in a communications system based on traffic behavior are provided. Models representing relationship between traffic loads and a key performance indicator of a cell or a cluster of cells may be built and tested to generate a set of prediction errors corresponding to a plurality of traffic load ranges. The prediction errors are examined against a criteria to determine a traffic suppression turning point in terms of traffic loads. The models built may also be used to calculate a set of KPI slope values corresponding to different traffic load ranges. The set of KPI slope values are examined against a criteria to determine a traffic suppression turning point in terms of traffic loads.Type: GrantFiled: May 5, 2016Date of Patent: September 5, 2017Assignee: Futurewei Technologies, Inc.Inventors: Baoling S. Sheen, Jin Yang, Yanchi Liu