Patents by Inventor Manish Parekh
Manish Parekh 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: 11972220Abstract: Techniques for using enhanced logit values for classifying utterances and messages input to chatbot systems in natural language processing. A method can include a chatbot system receiving an utterance generated by a user interacting with the chatbot system and inputting the utterance into a machine-learning model including a series of network layers. A final network layer of the series of network layers can include a logit function. The machine-learning model can map a first probability for a resolvable class to a first logit value using the logit function. The machine-learning model can map a second probability for a unresolvable class to an enhanced logit value. The method can also include the chatbot system classifying the utterance as the resolvable class or the unresolvable class based on the first logit value and the enhanced logit value.Type: GrantFiled: November 29, 2021Date of Patent: April 30, 2024Assignee: Oracle International CorporationInventors: Ying Xu, Poorya Zaremoodi, Thanh Tien Vu, Cong Duy Vu Hoang, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson
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Publication number: 20240126999Abstract: Techniques for using logit values for classifying utterances and messages input to chatbot systems in natural language processing. A method can include a chatbot system receiving an utterance generated by a user interacting with the chatbot system. The chatbot system can input the utterance into a machine-learning model including a set of binary classifiers. Each binary classifier of the set of binary classifiers can be associated with a modified logit function. The method can also include the machine-learning model using the modified logit function to generate a set of distance-based logit values for the utterance. The method can also include the machine-learning model applying an enhanced activation function to the set of distance-based logit values to generate a predicted output. The method can also include the chatbot system classifying, based on the predicted output, the utterance as being associated with the particular class.Type: ApplicationFiled: December 19, 2023Publication date: April 18, 2024Applicant: Oracle International CorporationInventors: Ying Xu, Poorya Zaremoodi, Thanh Tien Vu, Cong Duy Vu Hoang, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson
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Patent number: 11922123Abstract: Techniques for automatically switching between chatbot skills in the same domain. In one particular aspect, a method is provided that includes receiving an utterance from a user within a chatbot session, where a current skill context is a first skill and a current group context is a first group, inputting the utterance into a candidate skills model for the first group, obtaining, using the candidate skills model, a ranking of skills within the first group, determining, based on the ranking of skills, a second skill is a highest ranked skill, changing the current skill context of the chatbot session to the second skill, inputting the utterance into a candidate flows model for the second skill, obtaining, using the candidate flows model, a ranking of intents within the second skill that match the utterance, and determining, based on the ranking of intents, an intent that is a highest ranked intent.Type: GrantFiled: September 30, 2021Date of Patent: March 5, 2024Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Vishal Vishnoi, Xin Xu, Elias Luqman Jalaluddin, Srinivasa Phani Kumar Gadde, Crystal C. Pan, Mark Edward Johnson, Thanh Long Duong, Balakota Srinivas Vinnakota, Manish Parekh
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Publication number: 20230252975Abstract: Techniques are described for invoking and switching between chatbots of a chatbot system. In some embodiments, the chatbot system is capable of routing an utterance received while a user is already interacting with a first chatbot in the chatbot system. For instance, the chatbot system may identify a second chatbot based on determining that (i) such an utterance is an invalid input to the first chatbot or (ii) that the first chatbot is attempting to route the utterance to a destination associated with the first chatbot. Identifying the second chatbot can involve computing, using a predictive model, separate confidence scores for the first chatbot and the second chatbot, and then determining that a confidence score for the second chatbot satisfies one or more confidence score thresholds. The utterance is then routed to the second chatbot based on the identifying of the second chatbot.Type: ApplicationFiled: April 19, 2023Publication date: August 10, 2023Applicant: Oracle International CorporationInventors: Vishal Vishnoi, Xin Xu, Srinivasa Phani Kumar Gadde, Fen Wang, Muruganantham Chinnananchi, Manish Parekh, Stephen Andrew McRitchie, Jae Min John, Crystal C. Pan, Gautam Singaraju, Saba Amsalu Teserra
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Publication number: 20230206004Abstract: The present disclosure relates to chatbot systems, and more particularly, to techniques for obtaining data items for input to a chatbot. In certain embodiments, a chatbot system includes a component that can be invoked by a chatbot in the chatbot system to obtain data items needed by the chatbot. The component can be invoked based on a reference to the component in a dialog flow definition configured for the chatbot. The reference to the component can indicate a composite entity that the component will use to determine how the data items are obtained from a user. The composite entity acts as a container for the data items and may be configured separately from the dialog flow definition of the chatbot. The data items can be obtained based on rules specified in a composite entity definition configured for the composite entity.Type: ApplicationFiled: February 23, 2023Publication date: June 29, 2023Applicant: Oracle International CorporationInventors: Srinivasa Phani Kumar Gadde, Manish Parekh, Steven Martjin Davelaar, Manmohit Rekhi
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Patent number: 11657797Abstract: Techniques are described for invoking and switching between chatbots of a chatbot system. In some embodiments, the chatbot system is capable of routing an utterance received while a user is already interacting with a first chatbot in the chatbot system. For instance, the chatbot system may identify a second chatbot based on determining that (i) such an utterance is an invalid input to the first chatbot or (ii) that the first chatbot is attempting to route the utterance to a destination associated with the first chatbot. Identifying the second chatbot can involve computing, using a predictive model, separate confidence scores for the first chatbot and the second chatbot, and then determining that a confidence score for the second chatbot satisfies one or more confidence score thresholds. The utterance is then routed to the second chatbot based on the identifying of the second chatbot.Type: GrantFiled: April 23, 2020Date of Patent: May 23, 2023Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Vishal Vishnoi, Xin Xu, Srinivasa Phani Kumar Gadde, Fen Wang, Muruganantham Chinnananchi, Manish Parekh, Stephen Andrew McRitchie, Jae Min John, Crystal C. Pan, Gautam Singaraju, Saba Amsalu Teserra
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Patent number: 11651162Abstract: The present disclosure relates to chatbot systems, and more particularly, to techniques for obtaining data items for input to a chatbot. In certain embodiments, a chatbot system includes a component that can be invoked by a chatbot in the chatbot system to obtain data items needed by the chatbot. The component can be invoked based on a reference to the component in a dialog flow definition configured for the chatbot. The reference to the component can indicate a composite entity that the component will use to determine how the data items are obtained from a user. The composite entity acts as a container for the data items and may be configured separately from the dialog flow definition of the chatbot. The data items can be obtained based on rules specified in a composite entity definition configured for the composite entity.Type: GrantFiled: April 24, 2020Date of Patent: May 16, 2023Assignee: Oracle International CorporationInventors: Srinivasa Phani Kumar Gadde, Manish Parekh, Steven Martijn Davelaar, Manmohit Rekhi
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Publication number: 20220171947Abstract: Techniques for using logit values for classifying utterances and messages input to chatbot systems in natural language processing. A method can include a chatbot system receiving an utterance generated by a user interacting with the chatbot system. The chatbot system can input the utterance into a machine-learning model including a set of binary classifiers. Each binary classifier of the set of binary classifiers can be associated with a modified logit function. The method can also include the machine-learning model using the modified logit function to generate a set of distance-based logit values for the utterance. The method can also include the machine-learning model applying an enhanced activation function to the set of distance-based logit values to generate a predicted output. The method can also include the chatbot system classifying, based on the predicted output, the utterance as being associated with the particular class.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Applicant: Oracle International CorporationInventors: Ying Xu, Poorya Zaremoodi, Thanh Tien Vu, Cong Duy Vu Hoang, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson
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Publication number: 20220171946Abstract: Techniques for using enhanced logit values for classifying utterances and messages input to chatbot systems in natural language processing. A method can include a chatbot system receiving an utterance generated by a user interacting with the chatbot system and inputting the utterance into a machine-learning model including a series of network layers. A final network layer of the series of network layers can include a logit function. The machine-learning model can map a first probability for a resolvable class to a first logit value using the logit function. The machine-learning model can map a second probability for a unresolvable class to an enhanced logit value. The method can also include the chatbot system classifying the utterance as the resolvable class or the unresolvable class based on the first logit value and the enhanced logit value.Type: ApplicationFiled: November 29, 2021Publication date: June 2, 2022Applicant: Oracle International CorporationInventors: Ying Xu, Poorya Zaremoodi, Thanh Tien Vu, Cong Duy Vu Hoang, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson
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Publication number: 20220172021Abstract: Disclosed herein are techniques for addressing an overconfidence problem associated with machine learning models in chatbot systems. For each layer of a plurality of layers of a machine learning model, a distribution of confidence scores is generated for a plurality of predictions with respect to an input utterance. A prediction is determined for each layer of the machine learning model based on the distribution of confidence scores generated for the layer. Based on the predictions, an overall prediction of the machine learning model is determined. A subset of the plurality of layers are iteratively processed to identify a layer whose assigned prediction satisfies a criterion. A confidence score associated with the assigned prediction of the layer of the machine learning model is assigned as an overall confidence score to be associated with the overall prediction of the machine learning model.Type: ApplicationFiled: November 16, 2021Publication date: June 2, 2022Applicant: Oracle International CorporationInventors: Cong Duy Vu Hoang, Thanh Tien Vu, Poorya Zaremoodi, Ying Xu, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson
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Publication number: 20220100961Abstract: Techniques for automatically switching between chatbot skills in the same domain. In one particular aspect, a method is provided that includes receiving an utterance from a user within a chatbot session, where a current skill context is a first skill and a current group context is a first group, inputting the utterance into a candidate skills model for the first group, obtaining, using the candidate skills model, a ranking of skills within the first group, determining, based on the ranking of skills, a second skill is a highest ranked skill, changing the current skill context of the chatbot session to the second skill, inputting the utterance into a candidate flows model for the second skill, obtaining, using the candidate flows model, a ranking of intents within the second skill that match the utterance, and determining, based on the ranking of intents, an intent that is a highest ranked intent.Type: ApplicationFiled: September 30, 2021Publication date: March 31, 2022Applicant: Oracle International CorporationInventors: Vishal Vishnoi, Xin Xu, Elias Luqman Jalaluddin, Srinivasa Phani Kumar Gadde, Crystal C. Pan, Mark Edward Johnson, Thanh Long Duong, Balakota Srinivas Vinnakota, Manish Parekh
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Patent number: 11283737Abstract: Techniques for described for invoking a chatbot in a chatbot system, in response to an event notification from a software application. The event notification can be sent to the chatbot system based on the software application determining that one or more conditions associated with an event are satisfied. In certain embodiments, the event notification contains information indicating a dialog flow state for starting a new conversation between a particular chatbot and a user. The event notification can also identify the user and/or the particular chatbot. In some instances, a prompt is output to the user requesting the user to confirm a start of the new conversation. Whether the prompt is output or not can depend on whether there is an existing conversation between the user and a chatbot in the chatbot system.Type: GrantFiled: April 19, 2021Date of Patent: March 22, 2022Assignee: Oracle International CorporationInventors: Manish Parekh, King-Hwa Lee
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Publication number: 20220058347Abstract: A chatbot system is configured to execute code to perform determining, by the chatbot system, a classification result for an utterance and one or more anchors each anchor of the one or more anchors corresponding to one or more anchor words of the utterance. For each anchor of the one or more anchors, one or more synthetic utterances are generated, and one or more classification results for the one or more synthetic utterances are determined. A report is generated by the chatbot system comprising a representation of a particular anchor of the one or more anchors, the particular anchor corresponding to a highest confidence value among the one or more anchors. The one or more synthetic utterances may be used to generate a new training dataset for training a machine-learning model. The training dataset may be refined according to a threshold confidence values to filter out datasets for training.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Applicant: Oracle International CorporationInventors: Gautam Singaraju, Vishal Vishnoi, Manish Parekh, Alexander Wang
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Publication number: 20210304074Abstract: Techniques are disclosed for tuning hyperparameters of a machine-learning model. A plurality of metrics are selected for which hyperparameters of the machine-learning model are to be tuned. Each metric is associated with a plurality of specification parameters including a target score, a penalty factor, and a bonus factor. The plurality of specification parameters are configured for each metric in accordance with a first criterion. The machine-learning model is evaluated using one or more validation datasets to obtain a metric score. A weighted loss function is formulated based on a difference between the metric score and the target score of each metric, the penalty factor or the bonus factor. The hyperparameters associated with the machine-learning model are tuned in order to optimize the weighted loss function. In response to the weighted loss function being optimized, the machine-learning model is provided as a validated machine-learning model.Type: ApplicationFiled: March 29, 2021Publication date: September 30, 2021Applicant: Oracle International CorporationInventors: Poorya Zaremoodi, Ying Xu, Thanh Tien Vu, Vladislav Blinov, Yu-Heng Hong, Yakupitiyage Don Thanuja Samodhye Dharmasiri, Vishal Vishnoi, Elias Luqman Jalaluddin, Manish Parekh, Thanh Long Duong, Mark Edward Johnson, Xin Xu, Cong Duy Vu Hoang
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Publication number: 20210243141Abstract: Techniques for described for invoking a chatbot in a chatbot system, in response to an event notification from a software application. The event notification can be sent to the chatbot system based on the software application determining that one or more conditions associated with an event are satisfied. In certain embodiments, the event notification contains information indicating a dialog flow state for starting a new conversation between a particular chatbot and a user. The event notification can also identify the user and/or the particular chatbot. In some instances, a prompt is output to the user requesting the user to confirm a start of the new conversation. Whether the prompt is output or not can depend on whether there is an existing conversation between the user and a chatbot in the chatbot system.Type: ApplicationFiled: April 19, 2021Publication date: August 5, 2021Applicant: Oracle International CorporationInventors: Manish Parekh, King-Hwa Lee
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Patent number: 11012384Abstract: Techniques for described for invoking a chatbot in a chatbot system, in response to an event notification from a software application. The event notification can be sent to the chatbot system based on the software application determining that one or more conditions associated with an event are satisfied. In certain embodiments, the event notification contains information indicating a dialog flow state for starting a new conversation between a particular chatbot and a user. The event notification can also identify the user and/or the particular chatbot. In some instances, a prompt is output to the user requesting the user to confirm a start of the new conversation. Whether the prompt is output or not can depend on whether there is an existing conversation between the user and a chatbot in the chatbot system.Type: GrantFiled: April 24, 2020Date of Patent: May 18, 2021Assignee: Oracle International CorporationInventors: Manish Parekh, King-Hwa Lee
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Publication number: 20200342850Abstract: Techniques are described for invoking and switching between chatbots of a chatbot system. In some embodiments, the chatbot system is capable of routing an utterance received while a user is already interacting with a first chatbot in the chatbot system. For instance, the chatbot system may identify a second chatbot based on determining that (i) such an utterance is an invalid input to the first chatbot or (ii) that the first chatbot is attempting to route the utterance to a destination associated with the first chatbot. Identifying the second chatbot can involve computing, using a predictive model, separate confidence scores for the first chatbot and the second chatbot, and then determining that a confidence score for the second chatbot satisfies one or more confidence score thresholds. The utterance is then routed to the second chatbot based on the identifying of the second chatbot.Type: ApplicationFiled: April 23, 2020Publication date: October 29, 2020Applicant: Oracle International CorporationInventors: Vishal Vishnoi, Xin Xu, Srinivasa Phani Kumar Gadde, Fen Wang, Muruganantham Chinnananchi, Manish Parekh, Stephen Andrew McRitchie, Jae Min John, Crystal C. Pan, Gautam Singaraju, Saba Amsalu Teserra
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Publication number: 20200344186Abstract: Techniques for described for invoking a chatbot in a chatbot system, in response to an event notification from a software application. The event notification can be sent to the chatbot system based on the software application determining that one or more conditions associated with an event are satisfied. In certain embodiments, the event notification contains information indicating a dialog flow state for starting a new conversation between a particular chatbot and a user. The event notification can also identify the user and/or the particular chatbot. In some instances, a prompt is output to the user requesting the user to confirm a start of the new conversation. Whether the prompt is output or not can depend on whether there is an existing conversation between the user and a chatbot in the chatbot system.Type: ApplicationFiled: April 24, 2020Publication date: October 29, 2020Applicant: Oracle International CorporationInventors: Manish Parekh, King-Hwa Lee
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Publication number: 20200342175Abstract: The present disclosure relates to chatbot systems, and more particularly, to techniques for obtaining data items for input to a chatbot. In certain embodiments, a chatbot system includes a component that can be invoked by a chatbot in the chatbot system to obtain data items needed by the chatbot. The component can be invoked based on a reference to the component in a dialog flow definition configured for the chatbot. The reference to the component can indicate a composite entity that the component will use to determine how the data items are obtained from a user. The composite entity acts as a container for the data items and may be configured separately from the dialog flow definition of the chatbot. The data items can be obtained based on rules specified in a composite entity definition configured for the composite entity.Type: ApplicationFiled: April 24, 2020Publication date: October 29, 2020Applicant: Oracle International CorporationInventors: Srinivasa Phani Kumar Gadde, Manish Parekh, Steven Martijn Davelaar, Manmohit Rekhi