Search Results for author: Mohammad Kachuee

Found 18 papers, 7 papers with code

GrounDial: Human-norm Grounded Safe Dialog Response Generation

no code implementations14 Feb 2024 Siwon Kim, Shuyang Dai, Mohammad Kachuee, Shayan Ray, Tara Taghavi, Sungroh Yoon

Current conversational AI systems based on large language models (LLMs) are known to generate unsafe responses, agreeing to offensive user input or including toxic content.

In-Context Learning Response Generation

Data Augmentation for Improving Tail-traffic Robustness in Skill-routing for Dialogue Systems

no code implementations7 Jun 2023 Ting-Wei Wu, Fatemeh Sheikholeslami, Mohammad Kachuee, Jaeyoung Do, Sungjin Lee

Large-scale conversational systems typically rely on a skill-routing component to route a user request to an appropriate skill and interpretation to serve the request.

Data Augmentation Long-tail Learning

Scalable and Safe Remediation of Defective Actions in Self-Learning Conversational Systems

no code implementations17 May 2023 Sarthak Ahuja, Mohammad Kachuee, Fateme Sheikholeslami, Weiqing Liu, Jaeyoung Do

Off-Policy reinforcement learning has been a driving force for the state-of-the-art conversational AIs leading to more natural humanagent interactions and improving the user satisfaction for goal-oriented agents.

Off-policy evaluation regression +1

Constrained Policy Optimization for Controlled Self-Learning in Conversational AI Systems

no code implementations17 Sep 2022 Mohammad Kachuee, Sungjin Lee

Based on the experimental results, we demonstrate that the proposed approach is capable of achieving the best balance between the policy value and constraint satisfaction rate.

Multi-Armed Bandits Self-Learning

Domain-Aware Contrastive Knowledge Transfer for Multi-domain Imbalanced Data

no code implementations WASSA (ACL) 2022 Zixuan Ke, Mohammad Kachuee, Sungjin Lee

In many real-world machine learning applications, samples belong to a set of domains e. g., for product reviews each review belongs to a product category.

Transfer Learning

Real-Time Decentralized knowledge Transfer at the Edge

1 code implementation11 Nov 2020 Orpaz Goldstein, Mohammad Kachuee, Derek Shiell, Majid Sarrafzadeh

Transferring knowledge in a selective decentralized approach enables models to retain their local insights, allowing for local flavors of a machine learning model.

Knowledge Distillation Transfer Learning

Group-Connected Multilayer Perceptron Networks

no code implementations20 Dec 2019 Mohammad Kachuee, Sajad Darabi, Shayan Fazeli, Majid Sarrafzadeh

GMLP is based on the idea of learning expressive feature combinations (groups) and exploiting them to reduce the network complexity by defining local group-wise operations.

Representation Learning

Cost-Sensitive Feature-Value Acquisition Using Feature Relevance

no code implementations17 Dec 2019 Kimmo Kärkkäinen, Mohammad Kachuee, Orpaz Goldstein, Majid Sarrafzadeh

The chosen features should increase the prediction accuracy for a low cost, but determining which features will do that is challenging.

Learning-To-Rank

Unsupervised Representation for EHR Signals and Codes as Patient Status Vector

no code implementations4 Oct 2019 Sajad Darabi, Mohammad Kachuee, Majid Sarrafzadeh

In this work, we present a two-step unsupervised representation learning scheme to summarize the multi-modal clinical time series consisting of signals and medical codes into a patient status vector.

Representation Learning Time Series +1

Target-Focused Feature Selection Using a Bayesian Approach

no code implementations15 Sep 2019 Orpaz Goldstein, Mohammad Kachuee, Kimmo Karkkainen, Majid Sarrafzadeh

In many real-world scenarios where data is high dimensional, test time acquisition of features is a non-trivial task due to costs associated with feature acquisition and evaluating feature value.

feature selection

TAPER: Time-Aware Patient EHR Representation

2 code implementations11 Aug 2019 Sajad Darabi, Mohammad Kachuee, Shayan Fazeli, Majid Sarrafzadeh

The data contained in these records are irregular and contain multiple modalities such as notes, and medical codes.

Language Modelling Representation Learning

Generative Imputation and Stochastic Prediction

2 code implementations22 May 2019 Mohammad Kachuee, Kimmo Karkkainen, Orpaz Goldstein, Sajad Darabi, Majid Sarrafzadeh

In order to make imputations, we train a simple and effective generator network to generate imputations that a discriminator network is tasked to distinguish.

Classification General Classification +2

Cost-Sensitive Diagnosis and Learning Leveraging Public Health Data

2 code implementations19 Feb 2019 Mohammad Kachuee, Kimmo Karkkainen, Orpaz Goldstein, Davina Zamanzadeh, Majid Sarrafzadeh

Furthermore, based on the suggested dataset, we provide a comparison of recent and state-of-the-art approaches to cost-sensitive feature acquisition and learning.

Dynamic Feature Acquisition Using Denoising Autoencoders

1 code implementation3 Nov 2018 Mohammad Kachuee, Sajad Darabi, Babak Moatamed, Majid Sarrafzadeh

In real-world scenarios, different features have different acquisition costs at test-time which necessitates cost-aware methods to optimize the cost and performance trade-off.

Denoising Density Estimation +1

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