Search Results for author: Tiantian Feng

Found 22 papers, 9 papers with code

Partial Federated Learning

no code implementations3 Mar 2024 Tiantian Feng, Anil Ramakrishna, Jimit Majmudar, Charith Peris, Jixuan Wang, Clement Chung, Richard Zemel, Morteza Ziyadi, Rahul Gupta

Federated Learning (FL) is a popular algorithm to train machine learning models on user data constrained to edge devices (for example, mobile phones) due to privacy concerns.

Contrastive Learning Federated Learning

Can Text-to-image Model Assist Multi-modal Learning for Visual Recognition with Visual Modality Missing?

no code implementations14 Feb 2024 Tiantian Feng, Daniel Yang, Digbalay Bose, Shrikanth Narayanan

Specifically, we propose a simple but effective multi-modal learning framework GTI-MM to enhance the data efficiency and model robustness against missing visual modality by imputing the missing data with generative transformers.

Audio-visual child-adult speaker classification in dyadic interactions

no code implementations3 Oct 2023 Anfeng Xu, Kevin Huang, Tiantian Feng, Helen Tager-Flusberg, Shrikanth Narayanan

Building on the foundation of an audio-only child-adult speaker classification pipeline, we propose incorporating visual cues through active speaker detection and visual processing models.

Classification

FedAIoT: A Federated Learning Benchmark for Artificial Intelligence of Things

1 code implementation29 Sep 2023 Samiul Alam, Tuo Zhang, Tiantian Feng, Hui Shen, Zhichao Cao, Dong Zhao, JeongGil Ko, Kiran Somasundaram, Shrikanth S. Narayanan, Salman Avestimehr, Mi Zhang

However, most existing FL works are not conducted on datasets collected from authentic IoT devices that capture unique modalities and inherent challenges of IoT data.

Benchmarking Federated Learning

Scaling Representation Learning from Ubiquitous ECG with State-Space Models

1 code implementation26 Sep 2023 Kleanthis Avramidis, Dominika Kunc, Bartosz Perz, Kranti Adsul, Tiantian Feng, Przemysław Kazienko, Stanisław Saganowski, Shrikanth Narayanan

We train this model in a self-supervised manner with 275, 000 10s ECG recordings collected in the wild and evaluate it on a range of downstream tasks.

Representation Learning

MM-AU:Towards Multimodal Understanding of Advertisement Videos

no code implementations27 Aug 2023 Digbalay Bose, Rajat Hebbar, Tiantian Feng, Krishna Somandepalli, Anfeng Xu, Shrikanth Narayanan

Advertisement videos (ads) play an integral part in the domain of Internet e-commerce as they amplify the reach of particular products to a broad audience or can serve as a medium to raise awareness about specific issues through concise narrative structures.

Robust Self Supervised Speech Embeddings for Child-Adult Classification in Interactions involving Children with Autism

no code implementations31 Jul 2023 Rimita Lahiri, Tiantian Feng, Rajat Hebbar, Catherine Lord, So Hyun Kim, Shrikanth Narayanan

We address the problem of detecting who spoke when in child-inclusive spoken interactions i. e., automatic child-adult speaker classification.

Classification

Learning Behavioral Representations of Routines From Large-scale Unlabeled Wearable Time-series Data Streams using Hawkes Point Process

no code implementations10 Jul 2023 Tiantian Feng, Brandon M Booth, Shrikanth Narayanan

In this work, we propose a novel wearable time-series mining framework, Hawkes point process On Time series clusters for ROutine Discovery (HOT-ROD), for uncovering behavioral routines from completely unlabeled wearable recordings.

Time Series

FedMultimodal: A Benchmark For Multimodal Federated Learning

no code implementations15 Jun 2023 Tiantian Feng, Digbalay Bose, Tuo Zhang, Rajat Hebbar, Anil Ramakrishna, Rahul Gupta, Mi Zhang, Salman Avestimehr, Shrikanth Narayanan

In order to facilitate the research in multimodal FL, we introduce FedMultimodal, the first FL benchmark for multimodal learning covering five representative multimodal applications from ten commonly used datasets with a total of eight unique modalities.

Emotion Recognition Federated Learning +1

GPT-FL: Generative Pre-trained Model-Assisted Federated Learning

1 code implementation3 Jun 2023 Tuo Zhang, Tiantian Feng, Samiul Alam, Dimitrios Dimitriadis, Mi Zhang, Shrikanth S. Narayanan, Salman Avestimehr

Through comprehensive ablation analysis, we discover that the downstream model generated by synthetic data plays a crucial role in controlling the direction of gradient diversity during FL training, which enhances convergence speed and contributes to the notable accuracy boost observed with GPT-FL.

Federated Learning

Understanding Spoken Language Development of Children with ASD Using Pre-trained Speech Embeddings

no code implementations23 May 2023 Anfeng Xu, Rajat Hebbar, Rimita Lahiri, Tiantian Feng, Lindsay Butler, Lue Shen, Helen Tager-Flusberg, Shrikanth Narayanan

This paper proposes applications of speech processing technologies in support of automated assessment of children's spoken language development by classification between child and adult speech and between speech and nonverbal vocalization in NLS, with respective F1 macro scores of 82. 6% and 67. 8%, underscoring the potential for accurate and scalable tools for ASD research and clinical use.

Learning Sequence Descriptor based on Spatio-Temporal Attention for Visual Place Recognition

1 code implementation19 May 2023 Junqiao Zhao, Fenglin Zhang, Yingfeng Cai, Gengxuan Tian, Wenjie Mu, Chen Ye, Tiantian Feng

Visual Place Recognition (VPR) aims to retrieve frames from a geotagged database that are located at the same place as the query frame.

Retrieval Visual Place Recognition

A Review of Speech-centric Trustworthy Machine Learning: Privacy, Safety, and Fairness

no code implementations18 Dec 2022 Tiantian Feng, Rajat Hebbar, Nicholas Mehlman, Xuan Shi, Aditya Kommineni, and Shrikanth Narayanan

Speech-centric machine learning systems have revolutionized many leading domains ranging from transportation and healthcare to education and defense, profoundly changing how people live, work, and interact with each other.

Fairness

Multimodal Estimation of Change Points of Physiological Arousal in Drivers

1 code implementation28 Oct 2022 Kleanthis Avramidis, Tiantian Feng, Digbalay Bose, Shrikanth Narayanan

Detecting unsafe driving states, such as stress, drowsiness, and fatigue, is an important component of ensuring driving safety and an essential prerequisite for automatic intervention systems in vehicles.

Time Series Time Series Analysis

Semi-FedSER: Semi-supervised Learning for Speech Emotion Recognition On Federated Learning using Multiview Pseudo-Labeling

1 code implementation15 Mar 2022 Tiantian Feng, Shrikanth Narayanan

In this work, we propose a semi-supervised federated learning framework, Semi-FedSER, that utilizes both labeled and unlabeled data samples to address the challenge of limited labeled data samples in FL.

Federated Learning Speech Emotion Recognition

Attribute Inference Attack of Speech Emotion Recognition in Federated Learning Settings

1 code implementation26 Dec 2021 Tiantian Feng, Hanieh Hashemi, Rajat Hebbar, Murali Annavaram, Shrikanth S. Narayanan

To assess the information leakage of SER systems trained using FL, we propose an attribute inference attack framework that infers sensitive attribute information of the clients from shared gradients or model parameters, corresponding to the FedSGD and the FedAvg training algorithms, respectively.

Attribute Federated Learning +2

Unsupervised Joint Learning of Depth, Optical Flow, Ego-motion from Video

1 code implementation30 May 2021 Jianfeng Li, Junqiao Zhao, Shuangfu Song, Tiantian Feng

Compared with independent training, joint training can make full use of the geometric relationship between geometric elements and provide dynamic and static information of the scene.

Depth Estimation Optical Flow Estimation +1

Screenplay Quality Assessment: Can We Predict Who Gets Nominated?

no code implementations WS 2020 Ming-Chang Chiu, Tiantian Feng, Xiang Ren, Shrikanth Narayanan

Toward that goal, in this work, we present a method to evaluate the quality of a screenplay based on linguistic cues.

TILES-2018, a longitudinal physiologic and behavioral data set of hospital workers

no code implementations18 Mar 2020 Karel Mundnich, Brandon M. Booth, Michelle L'Hommedieu, Tiantian Feng, Benjamin Girault, Justin L'Hommedieu, Mackenzie Wildman, Sophia Skaaden, Amrutha Nadarajan, Jennifer L. Villatte, Tiago H. Falk, Kristina Lerman, Emilio Ferrara, Shrikanth Narayanan

We designed the study to investigate the use of off-the-shelf wearable and environmental sensors to understand individual-specific constructs such as job performance, interpersonal interaction, and well-being of hospital workers over time in their natural day-to-day job settings.

Privacy Preserving

Occlusion Aware Unsupervised Learning of Optical Flow From Video

1 code implementation4 Mar 2020 Jianfeng Li, Junqiao Zhao, Tiantian Feng, Chen Ye, Lu Xiong

In this paper, we proposed an unsupervised learning method for estimating the optical flow between video frames, especially to solve the occlusion problem.

Optical Flow Estimation

Vision-based Semantic Mapping and Localization for Autonomous Indoor Parking

no code implementations26 Sep 2018 Yewei Huang, Junqiao Zhao, Xudong He, Shaoming Zhang, Tiantian Feng

In this paper, we proposed a novel and practical solution for the real-time indoor localization of autonomous driving in parking lots.

Autonomous Driving Indoor Localization

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