Self-Correcting Chatbot via Reinforcement Learning Feedback

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current chatbots are narrow and customized to specific domains, lacking the ability to recognize context and adapt to user preferences, leading to inadequate responses and inefficiencies in achieving user goals, especially due to insufficient training data and inability to retrain models with changing user choices over time.

Innovation Solution

A reinforcement learning (RL)-based chatbot system that continuously learns from user feedback through sentiment analysis, retrains models using positive and negative reward scores, and adjusts recommendations in real-time to better align with user preferences and goals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chatbots are trained based on supervised learning techniques that map dialogues to responses, then the chatbots can provide structured responses, but there is often a lack of labelled samples and annotated data to train machine learning models

Engineering Contradiction:
Improveresponse generation reliabilityVSAvoidtraining data quantity
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The system enables chatbots to self-improve by automatically learning from user feedback and retraining their own models. The reinforcement learning mechanism allows the chatbot to use its own performance data (user responses, satisfaction feedback) to update its training models, eliminating the need for external manual annotation of training data.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements continuous feedback loops where user interactions and feedback are fed back into the training process. The reinforcement learning agent monitors user responses and satisfaction, uses this feedback to calculate reward scores, and retrains the chatbot model accordingly, creating a self-correcting system that improves over time.

Inventive Principle:
Principle #23Feedback

2Adaptability or versatility

If chatbots are customized to a specific domain, then the chatbots can provide domain-specific responses, but these chatbots are not designed to recognize and understand the underlying context of a conversation

Engineering Contradiction:
Improvecontext understanding capabilityVSAvoidmodel complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system transitions from static, domain-fixed chatbot models to dynamic models that continuously adapt to new contexts through reinforcement learning. The chatbot learns from actual user interactions in real-time, allowing it to handle diverse conversation contexts beyond its original training domain while maintaining domain-specific expertise.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If chatbots provide responses based on predefined training data, then the responses are consistent with training patterns, but the chatbots may not perform well when driven as per user preference to achieve a desired goal

Engineering Contradiction:
Improveuser preference adaptationVSAvoidgoal achievement reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The reinforcement learning system continuously monitors user preferences and goal achievement, using this feedback to adjust the chatbot's response generation. The agent learns which responses lead to better user satisfaction and goal completion, dynamically adapting its behavior to match user preferences while maintaining reliable goal achievement.

Inventive Principle:
Principle #23Feedback

4Adaptability or versatility

If chatbot models are trained with initial data, then the models can function initially, but it is infeasible to retrain the current chatbot models with every change of user choice/option over time

Engineering Contradiction:
Improveresponse to user choice changesVSAvoidmodel retraining time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system implements continuous learning where the chatbot model is continuously updated with new user feedback and interaction data. Rather than periodic retraining, the reinforcement learning agent continuously adjusts the model parameters in real-time, ensuring the chatbot always reflects current user preferences and patterns without time loss.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The chatbot system performs self-retraining using its own operational data. The reinforcement learning mechanism automatically processes user feedback, calculates reward scores, and updates the model without requiring external intervention or manual retraining processes, making the system self-sufficient and time-efficient.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11855934B2Chatbot with self-correction on response generation
Publication Date: 2023.12.26 GENPACT USA INC
  • US11855934B2 patent drawing
  • US11855934B2 patent drawing
  • US11855934B2 patent drawing

AI summary

A method and system for generating and correcting chatbot responses based on reinforcement learning (RL) are disclosed. In some embodiments, the method includes receiving user data associated with a user in a chatbot conversation. The method includes providing a first recommendation to the user. The method includes detecting user feedback to the first recommendation in the chatbot conversation. The method then includes determining whether to assign a positive reward or a negative reward to the user feedback based on sentiment analysis performed on the user feedback. If the negative reward is assigned to the user feedback, the method further includes calculating a negative reward score for the first recommendation; retraining the one or more of RL models using one or more of the negative reward score, the user data, the first recommendation, and the user feedback; and determining a second recommendation using the one or more retrained RL models.