Amazon Technologies, Inc.

Roger Scott Jenke

Rama Krishna Sandeep Pokkunuri

Yi Zhang

Meghana Puvvadi

Yahor Pushkin

Harshal Pimpalkhute

Peng Zhang

Rashmi Gangadharaiah

Ganesh Kumar Gella

Yaser Al-Onaizan

Vasanth Philomin

Saab Mansour

Arshit Gupta

Shang-Wen Daniel Li

Swaminathan Sivasubramanian

Hassan Sawaf

Katrin Kirchhoff

Rishita Rajal Anubhai

Swapandeep Singh

Atul Deo

Ajay Kumar Mishra

Kalpesh N Sutaria

Rajesh Goli

Kalpit Dixit

Miguel Ballesteros Martinez

Manikya Pavan Kiran Pothukuchi

Jason Krone

Santosh Kumar Ameti

Salvatore Romeo

Garima Lalwani

Trevor Andrew Morse

Kartik Natarajan

Dan Roth

Niranjhana Nayar

Yi-An Lai

Subhojit Das

Sudip Dutta

Chengshun Zhang

Elman Mansimov

Sebastien Jean

Aditi Tripathi

Sandeep Srinivasan

Saurabh Giri

Yassine Benajiba

Mona Diab

Raghavendraprasad Raghunath Prasad

Adel A Youssef

Shinichi Kato

A plurality of concepts is identified from utterances of a user of a service using a set of machine learning models. The plurality of concepts includes a primary concept representing an offering included in a catalog of the service, and a non-primary concept which provides additional information about the offering. A logical relationship is inferred among a pair of concepts using the set of machine learning models. A service order for the service is populated based at least in part on the relationship.

Machine learning techniques for dialog-based service order acquisition

Extraction of portions of natural language communications is performed to populate tables. An obtained communication may be associated with one, or more tables. The communication may include natural language data which may extracted and evaluated to predict different value mappings to the table. The value mappings may be confirmed or automatically made to the table.

Extracting data to populate tables from natural language communications

A natural language processing system may implement one or more composite slot types. The natural language processing system may receive a request to create a composite parameter type for causing performance by the natural language processing system of an intended action. The natural language processing system determines based on the request, a plurality of sub-parameters of the composite parameter type and generates a Boolean expression that relates two or more sub-parameters. The natural language processing system may apply the composite parameter type to determine that the pluralities of sub-parameters in an input text satisfies the Boolean expression to initiate performance of the intended action.

Composite slot type for natural language processing

Techniques for updating a machine learning model based on user interactions are described. In particular, in some examples, user interactions with a chatbot provide aspects of a data set to be used to train or fine-tune a ML model. In some examples, this is accomplished by collecting data from a first plurality of interactions with a machine learning (ML) model; generating a variant of the ML model using the collected data by: filtering the collected data to create a first data set, training the ML model based on the first data set to generate an adapted ML model, and fine-tuning the adapted ML model on a second data set, different than the first data set to generate the variant of the ML model.

Adaptations of task-oriented agents using user interactions

A system receives one or more transcripts of communications between entities. The system identifies a requested action in the communications based at least in part on a mapping between the requested action and an application programming interface. The system identifies one or more statements eliciting information, based on parameters to the application programming interface. The system generates a definition of an artificial agent based, at least in part, on the requested action and the one more statements eliciting information.

Artificial agent generator

Using a first set of machine learning models, a communication from a user of a restaurant is analyzed at an order coordinator linked via a network to resources of an order management service at a provider network. A response to the communication is prepared using another set of models at the provider network and presented to the user. An order of the user for one or more restaurant menu items is fulfilled, based at least partly on analysis of a second communication received from the user after the response is presented.

Distributed system for automated restaurant order acquisition

Techniques are described for a contextual natural language understanding (cNLU) framework that is able to incorporate contextual signals of variable history length to perform joint intent classification (IC) and slot labeling (SL) tasks. A user utterance provided by a user within a multi-turn chat dialog between the user and a conversational agent is received. The user utterance and contextual information associated with one or more previous turns of the multi-turn chat dialog is provided to a machine learning (ML) model. An intent classification and one or more slot labels for the user utterance are then obtained from the ML model. The cNLU framework described herein thus uses, in addition to a current utterance itself, various contextual signals as input to a model to generate IC and SL predictions for each utterance of a multi-turn chat dialog.

Contextual natural language understanding for conversational agents

Techniques for generating conversational training data are described. In some instances, a request to generate conversational training data for a goal-oriented conversation model is received, a transitional graph of intents is traversed to generate a conversation template for each intent of the transitional graph, each intent being a task to fulfill a request and comprising one or more slot to be filled by a user of the bot machine learning model, the conversation template including a path including at least one placeholder for an utterance or a slot level utterance, and at least utterances from one or more dictionaries are sampled to fill in the placeholders for the utterances of the path to generate conversational training data.

Goal-oriented conversational training data generation

Techniques for creating and calibrating natural-language understanding (NLU) machine learning models are described. In certain embodiments, a training service tunes parameters of a function, taking the output from an NLU machine learning model as an input of the function, to calibrate the NLU machine learning model's output to optimize the interpretability of the resulting output, e.g., confidence score(s). Embodiments herein include generating, by the NLU machine learning model, an output based at least in part on an input (e.g., utterance) from a user, and applying a tuned, output modifying function to the output from the NLU machine learning model to generate a modified output. An inference may be generated based at least in part on the modified output.

Confidence calibration for natural-language understanding models that provides optimal interpretability

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Durham, NC, United States of America

Roger Scott Jenke