Search Results for author: Truyen Tran

Found 95 papers, 26 papers with code

Revisiting the Dataset Bias Problem from a Statistical Perspective

no code implementations5 Feb 2024 Kien Do, Dung Nguyen, Hung Le, Thao Le, Dang Nguyen, Haripriya Harikumar, Truyen Tran, Santu Rana, Svetha Venkatesh

To overcome this challenge, we propose to approximate \frac{1}{p(u|b)} using a biased classifier trained with "bias amplification" losses.

Attribute

Root Cause Explanation of Outliers under Noisy Mechanisms

no code implementations19 Dec 2023 Phuoc Nguyen, Truyen Tran, Sunil Gupta, Thin Nguyen, Svetha Venkatesh

We then represent the functional form of a target outlier leaf as a function of the node and edge noises.

Attribute

LaGR-SEQ: Language-Guided Reinforcement Learning with Sample-Efficient Querying

1 code implementation21 Aug 2023 Thommen George Karimpanal, Laknath Buddhika Semage, Santu Rana, Hung Le, Truyen Tran, Sunil Gupta, Svetha Venkatesh

To address this issue, we introduce SEQ (sample efficient querying), where we simultaneously train a secondary RL agent to decide when the LLM should be queried for solutions.

Decision Making reinforcement-learning +1

Persistent-Transient Duality: A Multi-mechanism Approach for Modeling Human-Object Interaction

no code implementations ICCV 2023 Hung Tran, Vuong Le, Svetha Venkatesh, Truyen Tran

To bridge that gap, this work proposes to model two concurrent mechanisms that jointly control human motion: the Persistent process that runs continually on the global scale, and the Transient sub-processes that operate intermittently on the local context of the human while interacting with objects.

Graph Attention Human-Object Interaction Detection +1

Memory-Augmented Theory of Mind Network

no code implementations17 Jan 2023 Dung Nguyen, Phuoc Nguyen, Hung Le, Kien Do, Svetha Venkatesh, Truyen Tran

Social reasoning necessitates the capacity of theory of mind (ToM), the ability to contextualise and attribute mental states to others without having access to their internal cognitive structure.

Attribute

Momentum Adversarial Distillation: Handling Large Distribution Shifts in Data-Free Knowledge Distillation

no code implementations21 Sep 2022 Kien Do, Hung Le, Dung Nguyen, Dang Nguyen, Haripriya Harikumar, Truyen Tran, Santu Rana, Svetha Venkatesh

Since the EMA generator can be considered as an ensemble of the generator's old versions and often undergoes a smaller change in updates compared to the generator, training on its synthetic samples can help the student recall the past knowledge and prevent the student from adapting too quickly to new updates of the generator.

Data-free Knowledge Distillation

Video Dialog as Conversation about Objects Living in Space-Time

1 code implementation8 Jul 2022 Hoang-Anh Pham, Thao Minh Le, Vuong Le, Tu Minh Phuong, Truyen Tran

To tackle these challenges we present a new object-centric framework for video dialog that supports neural reasoning dubbed COST - which stands for Conversation about Objects in Space-Time.

Object Relational Reasoning +3

Guiding Visual Question Answering with Attention Priors

no code implementations25 May 2022 Thao Minh Le, Vuong Le, Sunil Gupta, Svetha Venkatesh, Truyen Tran

This grounding guides the attention mechanism inside VQA models through a duality of mechanisms: pre-training attention weight calculation and directly guiding the weights at inference time on a case-by-case basis.

Question Answering Visual Grounding +2

Persistent-Transient Duality in Human Behavior Modeling

no code implementations21 Apr 2022 Hung Tran, Vuong Le, Svetha Venkatesh, Truyen Tran

We propose to model the persistent-transient duality in human behavior using a parent-child multi-channel neural network, which features a parent persistent channel that manages the global dynamics and children transient channels that are initiated and terminated on-demand to handle detailed interactive actions.

Human-Object Interaction Detection motion prediction

Learning to Transfer Role Assignment Across Team Sizes

no code implementations17 Apr 2022 Dung Nguyen, Phuoc Nguyen, Svetha Venkatesh, Truyen Tran

In particular, we train a role assignment network for small teams by demonstration and transfer the network to larger teams, which continue to learn through interaction with the environment.

Management Multi-agent Reinforcement Learning +4

Learning Theory of Mind via Dynamic Traits Attribution

no code implementations17 Apr 2022 Dung Nguyen, Phuoc Nguyen, Hung Le, Kien Do, Svetha Venkatesh, Truyen Tran

Inspired by the observation that humans often infer the character traits of others, then use it to explain behaviour, we propose a new neural ToM architecture that learns to generate a latent trait vector of an actor from the past trajectories.

Future prediction Inductive Bias +1

Learning to Discover Medicines

no code implementations14 Feb 2022 Tri Minh Nguyen, Thin Nguyen, Truyen Tran

Discovering new medicines is the hallmark of human endeavor to live a better and longer life.

Drug Discovery Knowledge Graphs +1

Mitigating cold start problems in drug-target affinity prediction with interaction knowledge transferring

1 code implementation16 Jan 2022 Tri Minh Nguyen, Thin Nguyen, Truyen Tran

While the drug or target representation can be learned in an unsupervised manner, it still lacks the interaction information, which is critical in drug-target interaction.

BIG-bench Machine Learning Drug Discovery +1

Balanced Q-learning: Combining the Influence of Optimistic and Pessimistic Targets

no code implementations3 Nov 2021 Thommen George Karimpanal, Hung Le, Majid Abdolshah, Santu Rana, Sunil Gupta, Truyen Tran, Svetha Venkatesh

The optimistic nature of the Q-learning target leads to an overestimation bias, which is an inherent problem associated with standard $Q-$learning.

Q-Learning

Generative Pseudo-Inverse Memory

no code implementations ICLR 2022 Kha Pham, Hung Le, Man Ngo, Truyen Tran, Bao Ho, Svetha Venkatesh

We propose Generative Pseudo-Inverse Memory (GPM), a class of deep generative memory models that are fast to write in and read out.

Denoising

Clustering by Maximizing Mutual Information Across Views

no code implementations ICCV 2021 Kien Do, Truyen Tran, Svetha Venkatesh

We propose a novel framework for image clustering that incorporates joint representation learning and clustering.

Clustering Image Clustering +1

Hierarchical Object-oriented Spatio-Temporal Reasoning for Video Question Answering

no code implementations25 Jun 2021 Long Hoang Dang, Thao Minh Le, Vuong Le, Truyen Tran

Toward reaching this goal we propose an object-oriented reasoning approach in that video is abstracted as a dynamic stream of interacting objects.

Object Question Answering +1

A Spatio-temporal Attention-based Model for Infant Movement Assessment from Videos

1 code implementation20 May 2021 Binh Nguyen-Thai, Vuong Le, Catherine Morgan, Nadia Badawi, Truyen Tran, Svetha Venkatesh

The absence or abnormality of fidgety movements of joints or limbs is strongly indicative of cerebral palsy in infants.

Video Classification

Object-Centric Representation Learning for Video Question Answering

no code implementations12 Apr 2021 Long Hoang Dang, Thao Minh Le, Vuong Le, Truyen Tran

Video question answering (Video QA) presents a powerful testbed for human-like intelligent behaviors.

Object Question Answering +3

Counterfactual Explanation with Multi-Agent Reinforcement Learning for Drug Target Prediction

1 code implementation24 Mar 2021 Tri Minh Nguyen, Thomas P Quinn, Thin Nguyen, Truyen Tran

Methods: We propose a multi-agent reinforcement learning framework, Multi-Agent Counterfactual Drug target binding Affinity (MACDA), to generate counterfactual explanations for the drug-protein complex.

counterfactual Counterfactual Explanation +4

Learning Asynchronous and Sparse Human-Object Interaction in Videos

no code implementations CVPR 2021 Romero Morais, Vuong Le, Svetha Venkatesh, Truyen Tran

Their interactions are sparse in time hence more faithful to the true underlying nature and more robust in inference and learning.

Human-Object Interaction Detection Object

Logically Consistent Loss for Visual Question Answering

no code implementations19 Nov 2020 Anh-Cat Le-Ngo, Truyen Tran, Santu Rana, Sunil Gupta, Svetha Venkatesh

We propose a new model-agnostic logic constraint to tackle this issue by formulating a logically consistent loss in the multi-task learning framework as well as a data organisation called family-batch and hybrid-batch.

Multi-Task Learning Question Answering +1

Goal-driven Long-Term Trajectory Prediction

no code implementations5 Nov 2020 Hung Tran, Vuong Le, Truyen Tran

We design Goal-driven Trajectory Prediction model - a dual-channel neural network that realizes such intuition.

Trajectory Prediction

Toward a Generalization Metric for Deep Generative Models

1 code implementation NeurIPS Workshop ICBINB 2020 Hoang Thanh-Tung, Truyen Tran

In this paper, we investigate the capacity of these metrics in measuring the generalization capacity.

Memorization

GEFA: Early Fusion Approach in Drug-Target Affinity Prediction

1 code implementation25 Sep 2020 Tri Minh Nguyen, Thin Nguyen, Thao Minh Le, Truyen Tran

In addition, previous DTA methods learn protein representation solely based on a small number of protein sequences in DTA datasets while neglecting the use of proteins outside of the DTA datasets.

Unsupervised Anomaly Detection on Temporal Multiway Data

no code implementations20 Sep 2020 Duc Nguyen, Phuoc Nguyen, Kien Do, Santu Rana, Sunil Gupta, Truyen Tran

These include the capacity of the compact matrix LSTM to compress noisy data near perfectly, making the strategy of compressing-decompressing data ill-suited for anomaly detection under the noise.

Unsupervised Anomaly Detection

Theory of Mind with Guilt Aversion Facilitates Cooperative Reinforcement Learning

no code implementations16 Sep 2020 Dung Nguyen, Svetha Venkatesh, Phuoc Nguyen, Truyen Tran

In psychological game theory, guilt aversion necessitates modelling of agents that have theory about what other agents think, also known as Theory of Mind (ToM).

reinforcement-learning Reinforcement Learning (RL)

Learning to Abstract and Predict Human Actions

1 code implementation20 Aug 2020 Romero Morais, Vuong Le, Truyen Tran, Svetha Venkatesh

We propose Hierarchical Encoder-Refresher-Anticipator, a multi-level neural machine that can learn the structure of human activities by observing a partial hierarchy of events and roll-out such structure into a future prediction in multiple levels of abstraction.

Activity Prediction Future prediction

Variational Hyper-Encoding Networks

no code implementations18 May 2020 Phuoc Nguyen, Truyen Tran, Sunil Gupta, Santu Rana, Hieu-Chi Dam, Svetha Venkatesh

Given a target distribution, we predict the posterior distribution of the latent code, then use a matrix-network decoder to generate a posterior distribution q(\theta).

Density Estimation Outlier Detection +1

Dynamic Language Binding in Relational Visual Reasoning

1 code implementation30 Apr 2020 Thao Minh Le, Vuong Le, Svetha Venkatesh, Truyen Tran

We present Language-binding Object Graph Network, the first neural reasoning method with dynamic relational structures across both visual and textual domains with applications in visual question answering.

Object Question Answering +2

Hierarchical Conditional Relation Networks for Video Question Answering

1 code implementation CVPR 2020 Thao Minh Le, Vuong Le, Svetha Venkatesh, Truyen Tran

Video question answering (VideoQA) is challenging as it requires modeling capacity to distill dynamic visual artifacts and distant relations and to associate them with linguistic concepts.

Audio-Visual Question Answering (AVQA) Question Answering +4

Self-Attentive Associative Memory

1 code implementation ICML 2020 Hung Le, Truyen Tran, Svetha Venkatesh

Heretofore, neural networks with external memory are restricted to single memory with lossy representations of memory interactions.

Memorization Question Answering +1

Theory and Evaluation Metrics for Learning Disentangled Representations

2 code implementations ICLR 2020 Kien Do, Truyen Tran

We make two theoretical contributions to disentanglement learning by (a) defining precise semantics of disentangled representations, and (b) establishing robust metrics for evaluation.

Disentanglement Informativeness

Neural Reasoning, Fast and Slow, for Video Question Answering

no code implementations10 Jul 2019 Thao Minh Le, Vuong Le, Svetha Venkatesh, Truyen Tran

While recent advances in lingual and visual question answering have enabled sophisticated representations and neural reasoning mechanisms, major challenges in Video QA remain on dynamic grounding of concepts, relations and actions to support the reasoning process.

Natural Questions Question Answering +2

Improving Generalization and Stability of Generative Adversarial Networks

1 code implementation ICLR 2019 Hoang Thanh-Tung, Truyen Tran, Svetha Venkatesh

We propose a zero-centered gradient penalty for improving the generalization of the discriminator by pushing it toward the optimal discriminator.

Learning to Remember More with Less Memorization

1 code implementation ICLR 2019 Hung Le, Truyen Tran, Svetha Venkatesh

Memory-augmented neural networks consisting of a neural controller and an external memory have shown potentials in long-term sequential learning.

Memorization Sentiment Analysis +2

Towards effective AI-powered agile project management

no code implementations27 Dec 2018 Hoa Khanh Dam, Truyen Tran, John Grundy, Aditya Ghose, Yasutaka Kamei

The rise of Artificial intelligence (AI) has the potential to significantly transform the practice of project management.

Management

Graph Transformation Policy Network for Chemical Reaction Prediction

no code implementations22 Dec 2018 Kien Do, Truyen Tran, Svetha Venkatesh

We address a fundamental problem in chemistry known as chemical reaction product prediction.

Chemical Reaction Prediction

Relational dynamic memory networks

no code implementations10 Aug 2018 Trang Pham, Truyen Tran, Svetha Venkatesh

Neural networks excel in detecting regular patterns but are less successful in representing and manipulating complex data structures, possibly due to the lack of an external memory.

Variational Memory Encoder-Decoder

1 code implementation NeurIPS 2018 Hung Le, Truyen Tran, Thin Nguyen, Svetha Venkatesh

Introducing variability while maintaining coherence is a core task in learning to generate utterances in conversation.

On Catastrophic Forgetting and Mode Collapse in Generative Adversarial Networks

1 code implementation11 Jul 2018 Hoang Thanh-Tung, Truyen Tran

We show that GAN training is a continual learning problem in which the sequence of changing model distributions is the sequence of tasks to the discriminator.

Continual Learning

Dual Control Memory Augmented Neural Networks for Treatment Recommendations

no code implementations11 Feb 2018 Hung Le, Truyen Tran, Svetha Venkatesh

The decoding controller generates a treatment sequence, one treatment option at a time.

DeepProcess: Supporting business process execution using a MANN-based recommender system

1 code implementation3 Feb 2018 Asjad Khan, Hung Le, Kien Do, Truyen Tran, Aditya Ghose, Hoa Dam, Renuka Sindhgatta

Process-aware Recommender systems can provide critical decision support functionality to aid business process execution by recommending what actions to take next.

Activity Prediction Recommendation Systems

A deep tree-based model for software defect prediction

1 code implementation3 Feb 2018 Hoa Khanh Dam, Trang Pham, Shien Wee Ng, Truyen Tran, John Grundy, Aditya Ghose, Taeksu Kim, Chul-Joo Kim

Defects are common in software systems and can potentially cause various problems to software users.

Software Engineering

Knowledge Graph Embedding with Multiple Relation Projections

no code implementations26 Jan 2018 Kien Do, Truyen Tran, Svetha Venkatesh

Knowledge graphs contain rich relational structures of the world, and thus complement data-driven machine learning in heterogeneous data.

Knowledge Graph Embedding Knowledge Graphs +3

Graph Memory Networks for Molecular Activity Prediction

no code implementations8 Jan 2018 Trang Pham, Truyen Tran, Svetha Venkatesh

GraphMem is capable of jointly training on multiple datasets by using a specific-task query fed to the controller as an input.

Activity Prediction Multi-Task Learning

Finding Algebraic Structure of Care in Time: A Deep Learning Approach

no code implementations21 Nov 2017 Phuoc Nguyen, Truyen Tran, Svetha Venkatesh

The interaction between diseases and treatments at a visit is modeled as the residual of the diseases minus the treatments.

Automatic feature learning for vulnerability prediction

no code implementations8 Aug 2017 Hoa Khanh Dam, Truyen Tran, Trang Pham, Shien Wee Ng, John Grundy, Aditya Ghose

Code flaws or vulnerabilities are prevalent in software systems and can potentially cause a variety of problems including deadlock, information loss, or system failure.

Software Engineering

Deep Learning to Attend to Risk in ICU

no code implementations17 Jul 2017 Phuoc Nguyen, Truyen Tran, Svetha Venkatesh

At the reasoning layer, evidences across time steps are weighted and combined.

Decision Making ICU Mortality +2

Learning Deep Matrix Representations

no code implementations4 Mar 2017 Kien Do, Truyen Tran, Svetha Venkatesh

We derive several new deep networks: (i) feed-forward nets that map an input matrix into an output matrix, (ii) recurrent nets which map a sequence of input matrices into a sequence of output matrices.

EEG Face Reconstruction +2

One Size Fits Many: Column Bundle for Multi-X Learning

no code implementations22 Feb 2017 Trang Pham, Truyen Tran, Svetha Venkatesh

Much recent machine learning research has been directed towards leveraging shared statistics among labels, instances and data views, commonly referred to as multi-label, multi-instance and multi-view learning.

MULTI-VIEW LEARNING

Multilevel Anomaly Detection for Mixed Data

no code implementations20 Oct 2016 Kien Do, Truyen Tran, Svetha Venkatesh

We propose MIXMAD, which stands for MIXed data Multilevel Anomaly Detection, an ensemble method that estimates the sparse regions across multiple levels of abstraction of mixed data.

Unsupervised Anomaly Detection

Stabilizing Linear Prediction Models using Autoencoder

no code implementations28 Sep 2016 Shivapratap Gopakumar, Truyen Tran, Dinh Phung, Svetha Venkatesh

Using a linear model as basis for prediction, we achieve feature stability by regularising latent correlation in features.

Column Networks for Collective Classification

1 code implementation15 Sep 2016 Trang Pham, Truyen Tran, Dinh Phung, Svetha Venkatesh

CLN has many desirable theoretical properties: (i) it encodes multi-relations between any two instances; (ii) it is deep and compact, allowing complex functions to be approximated at the network level with a small set of free parameters; (iii) local and relational features are learned simultaneously; (iv) long-range, higher-order dependencies between instances are supported naturally; and (v) crucially, learning and inference are efficient, linear in the size of the network and the number of relations.

Classification General Classification +2

A deep learning model for estimating story points

no code implementations2 Sep 2016 Morakot Choetkiertikul, Hoa Khanh Dam, Truyen Tran, Trang Pham, Aditya Ghose, Tim Menzies

Although there has been substantial research in software analytics for effort estimation in traditional software projects, little work has been done for estimation in agile projects, especially estimating user stories or issues.

Feature Engineering

Outlier Detection on Mixed-Type Data: An Energy-based Approach

1 code implementation17 Aug 2016 Kien Do, Truyen Tran, Dinh Phung, Svetha Venkatesh

We evaluate the proposed method on synthetic and real-world datasets and demonstrate that (a) a proper handling mixed-types is necessary in outlier detection, and (b) free-energy of Mv. RBM is a powerful and efficient outlier scoring method, which is highly competitive against state-of-the-arts.

Outlier Detection Vocal Bursts Type Prediction

Faster Training of Very Deep Networks Via p-Norm Gates

no code implementations11 Aug 2016 Trang Pham, Truyen Tran, Dinh Phung, Svetha Venkatesh

Gates are employed in many recent state-of-the-art recurrent models such as LSTM and GRU, and feedforward models such as Residual Nets and Highway Networks.

Machine Translation Translation

A deep language model for software code

1 code implementation9 Aug 2016 Hoa Khanh Dam, Truyen Tran, Trang Pham

Existing language models such as n-grams for software code often fail to capture a long context where dependent code elements scatter far apart.

Language Modelling

DeepSoft: A vision for a deep model of software

no code implementations30 Jul 2016 Hoa Khanh Dam, Truyen Tran, John Grundy, Aditya Ghose

Although software analytics has experienced rapid growth as a research area, it has not yet reached its full potential for wide industrial adoption.

Feature Engineering

Deepr: A Convolutional Net for Medical Records

no code implementations26 Jul 2016 Phuoc Nguyen, Truyen Tran, Nilmini Wickramasinghe, Svetha Venkatesh

On top of the sequence is a convolutional neural net that detects and combines predictive local clinical motifs to stratify the risk.

Feature Engineering

Learning deep representation of multityped objects and tasks

no code implementations4 Mar 2016 Truyen Tran, Dinh Phung, Svetha Venkatesh

We introduce a deep multitask architecture to integrate multityped representations of multimodal objects.

Image Retrieval Retrieval

Choice by Elimination via Deep Neural Networks

no code implementations17 Feb 2016 Truyen Tran, Dinh Phung, Svetha Venkatesh

We introduce Neural Choice by Elimination, a new framework that integrates deep neural networks into probabilistic sequential choice models for learning to rank.

Learning-To-Rank

Collaborative filtering via sparse Markov random fields

no code implementations9 Feb 2016 Truyen Tran, Dinh Phung, Svetha Venkatesh

Recommender systems play a central role in providing individualized access to information and services.

Collaborative Filtering Movie Recommendation +1

DeepCare: A Deep Dynamic Memory Model for Predictive Medicine

1 code implementation1 Feb 2016 Trang Pham, Truyen Tran, Dinh Phung, Svetha Venkatesh

We introduce DeepCare, an end-to-end deep dynamic neural network that reads medical records, stores previous illness history, infers current illness states and predicts future medical outcomes.

MCMC for Hierarchical Semi-Markov Conditional Random Fields

no code implementations6 Aug 2014 Truyen Tran, Dinh Phung, Svetha Venkatesh, Hung H. Bui

In this contribution, we propose a new approximation technique that may have the potential to achieve sub-cubic time complexity in length and linear time depth, at the cost of some loss of quality.

Human Activity Learning and Segmentation using Partially Hidden Discriminative Models

no code implementations6 Aug 2014 Truyen Tran, Hung Bui, Svetha Venkatesh

Learning and understanding the typical patterns in the daily activities and routines of people from low-level sensory data is an important problem in many application domains such as building smart environments, or providing intelligent assistance.

Boosted Markov Networks for Activity Recognition

no code implementations6 Aug 2014 Truyen Tran, Hung Bui, Svetha Venkatesh

We explore a framework called boosted Markov networks to combine the learning capacity of boosting and the rich modeling semantics of Markov networks and applying the framework for video-based activity recognition.

Activity Recognition feature selection +1

Thurstonian Boltzmann Machines: Learning from Multiple Inequalities

no code implementations1 Aug 2014 Truyen Tran, Dinh Phung, Svetha Venkatesh

We introduce Thurstonian Boltzmann Machines (TBM), a unified architecture that can naturally incorporate a wide range of data inputs at the same time.

Collaborative Filtering Handwritten Digit Recognition

Learning Structured Outputs from Partial Labels using Forest Ensemble

no code implementations24 Jul 2014 Truyen Tran, Dinh Phung, Svetha Venkatesh

Learning structured outputs with general structures is computationally challenging, except for tree-structured models.

Stabilizing Sparse Cox Model using Clinical Structures in Electronic Medical Records

no code implementations23 Jul 2014 Shivapratap Gopakumar, Truyen Tran, Dinh Phung, Svetha Venkatesh

Stability in clinical prediction models is crucial for transferability between studies, yet has received little attention.

feature selection

Permutation Models for Collaborative Ranking

no code implementations23 Jul 2014 Truyen Tran, Svetha Venkatesh

Focusing on the core of the collaborative ranking process, the user and their community, we propose new models for representation of the underlying permutations and prediction of ranks.

Collaborative Filtering Collaborative Ranking

Learning Rank Functionals: An Empirical Study

no code implementations23 Jul 2014 Truyen Tran, Dinh Phung, Svetha Venkatesh

In practical settings, the task often reduces to estimating a rank functional of an object with respect to a query.

Information Retrieval Learning-To-Rank +3

Tree-based iterated local search for Markov random fields with applications in image analysis

no code implementations22 Jul 2014 Truyen Tran, Dinh Phung, Svetha Venkatesh

The \emph{maximum a posteriori} (MAP) assignment for general structure Markov random fields (MRFs) is computationally intractable.

Image Denoising Stereo Matching +1

Global optimization using Lévy flights

no code implementations22 Jul 2014 Truyen Tran, Trung Thanh Nguyen, Hoang Linh Nguyen

This paper studies a class of enhanced diffusion processes in which random walkers perform L\'evy flights and apply it for global optimization.

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