Search Results for author: Tian Guo

Found 35 papers, 12 papers with code

CleAR: Robust Context-Guided Generative Lighting Estimation for Mobile Augmented Reality

no code implementations4 Nov 2024 Yiqin Zhao, Mallesham Dasari, Tian Guo

To improve the estimation robustness under different lighting conditions, we design a real-time refinement component to adjust lighting estimation results on AR devices.

Hallucination Lighting Estimation

HybridDepth: Robust Metric Depth Fusion by Leveraging Depth from Focus and Single-Image Priors

1 code implementation26 Jul 2024 Ashkan Ganj, Hang Su, Tian Guo

We propose HYBRIDDEPTH, a robust depth estimation pipeline that addresses key challenges in depth estimation, including scale ambiguity, hardware heterogeneity, and generalizability.

Monocular Depth Estimation Zero-shot Generalization

Fine-Tuning Large Language Models for Stock Return Prediction Using Newsflow

no code implementations25 Jul 2024 Tian Guo, Emmanuel Hauptmann

We propose to compare the encoder-only and decoder-only LLMs, considering they generate text representations in distinct ways.

Decoder Portfolio Optimization

CE-NAS: An End-to-End Carbon-Efficient Neural Architecture Search Framework

no code implementations3 Jun 2024 Yiyang Zhao, Yunzhuo Liu, Bo Jiang, Tian Guo

For open-domain NAS tasks, CE-NAS achieves SOTA results with 97. 35% top-1 accuracy on CIFAR-10 with only 1. 68M parameters and a carbon consumption of 38. 53 lbs of CO2.

Neural Architecture Search

Multi-Objective Neural Architecture Search by Learning Search Space Partitions

no code implementations1 Jun 2024 Yiyang Zhao, Linnan Wang, Tian Guo

This results in deep learning model designers leveraging multi-objective optimization to design effective deep neural networks in multiple criteria.

Bayesian Optimization Neural Architecture Search

Mobile AR Depth Estimation: Challenges & Prospects -- Extended Version

1 code implementation22 Oct 2023 Ashkan Ganj, Yiqin Zhao, Hang Su, Tian Guo

In this paper, we investigate the challenges and opportunities of achieving accurate metric depth estimation in mobile AR.

Monocular Depth Estimation

Carbon-Efficient Neural Architecture Search

no code implementations9 Jul 2023 Yiyang Zhao, Tian Guo

This work presents a novel approach to neural architecture search (NAS) that aims to reduce energy costs and increase carbon efficiency during the model design process.

Neural Architecture Search

Learning Mixture Structure on Multi-Source Time Series for Probabilistic Forecasting

no code implementations22 Feb 2023 Tian Guo

In many data-driven applications, collecting data from different sources is increasingly desirable for enhancing performance.

Time Series Time Series Analysis +1

Multi-Camera Lighting Estimation for Photorealistic Front-Facing Mobile Augmented Reality

no code implementations15 Jan 2023 Yiqin Zhao, Sean Fanello, Tian Guo

This lack of support can be attributed to the unique challenges of obtaining 360$^\circ$ HDR environment maps, an ideal format of lighting representation, from the front-facing camera and existing techniques.

Lighting Estimation Virtual Try-on

LitAR: Visually Coherent Lighting for Mobile Augmented Reality

1 code implementation15 Jan 2023 Yiqin Zhao, Chongyang Ma, Haibin Huang, Tian Guo

In this work, we present the design and implementation of a lighting reconstruction framework called LitAR that enables realistic and visually-coherent rendering.

Multi-objective Optimization by Learning Space Partitions

1 code implementation7 Oct 2021 Yiyang Zhao, Linnan Wang, Kevin Yang, Tianjun Zhang, Tian Guo, Yuandong Tian

In this paper, we propose LaMOO, a novel multi-objective optimizer that learns a model from observed samples to partition the search space and then focus on promising regions that are likely to contain a subset of the Pareto frontier.

Neural Architecture Search

Multi-objective Optimization by Learning Space Partition

no code implementations ICLR 2022 Yiyang Zhao, Linnan Wang, Kevin Yang, Tianjun Zhang, Tian Guo, Yuandong Tian

In this paper, we propose LaMOO, a novel multi-objective optimizer that learns a model from observed samples to partition the search space and then focus on promising regions that are likely to contain a subset of the Pareto frontier.

Neural Architecture Search

Xihe: A 3D Vision-based Lighting Estimation Framework for Mobile Augmented Reality

1 code implementation30 May 2021 Yiqin Zhao, Tian Guo

Centering the key idea of 3D vision, in this work, we design an edge-assisted framework called Xihe to provide mobile AR applications the ability to obtain accurate omnidirectional lighting estimation in real time.

Lighting Estimation

Memory-Efficient Deep Learning Inference in Trusted Execution Environments

no code implementations30 Apr 2021 Jean-Baptiste Truong, William Gallagher, Tian Guo, Robert J. Walls

This study identifies and proposes techniques to alleviate two key bottlenecks to executing deep neural networks in trusted execution environments (TEEs): page thrashing during the execution of convolutional layers and the decryption of large weight matrices in fully-connected layers.

Deep Learning Quantization

Sync-Switch: Hybrid Parameter Synchronization for Distributed Deep Learning

1 code implementation16 Apr 2021 Shijian Li, Oren Mangoubi, Lijie Xu, Tian Guo

Further, we observe that Sync-Switch achieves 3. 8% higher converged accuracy with just 1. 23X the training time compared to training with ASP.

Deep Learning

Few-shot Neural Architecture Search

2 code implementations11 Jun 2020 Yiyang Zhao, Linnan Wang, Yuandong Tian, Rodrigo Fonseca, Tian Guo

supernet, to approximate the performance of every architecture in the search space via weight-sharing.

Neural Architecture Search Transfer Learning

ESG2Risk: A Deep Learning Framework from ESG News to Stock Volatility Prediction

no code implementations5 May 2020 Tian Guo, Nicolas Jamet, Valentin Betrix, Louis-Alexandre Piquet, Emmanuel Hauptmann

Incorporating environmental, social, and governance (ESG) considerations into systematic investments has drawn numerous attention recently.

Bayesian Inference

Characterizing and Modeling Distributed Training with Transient Cloud GPU Servers

1 code implementation7 Apr 2020 Shijian Li, Robert J. Walls, Tian Guo

However, it is challenging to determine the appropriate cluster configuration---e. g., server type and number---for different training workloads while balancing the trade-offs in training time, cost, and model accuracy.

PointAR: Efficient Lighting Estimation for Mobile Augmented Reality

1 code implementation ECCV 2020 Yiqin Zhao, Tian Guo

We propose an efficient lighting estimation pipeline that is suitable to run on modern mobile devices, with comparable resource complexities to state-of-the-art mobile deep learning models.

Lighting Estimation

Perseus: Characterizing Performance and Cost of Multi-Tenant Serving for CNN Models

1 code implementation5 Dec 2019 Matthew LeMay, Shijian Li, Tian Guo

Leveraging Perseus, we evaluated the inference throughput and cost for serving various models and demonstrated that multi-tenant model serving led to up to 12% cost reduction.

Characterizing the Deep Neural Networks Inference Performance of Mobile Applications

no code implementations10 Sep 2019 Samuel S. Ogden, Tian Guo

The key idea of CNNSelect is to make inference speed and accuracy trade-offs at runtime using a set of CNN models.

Distributed, Parallel, and Cluster Computing Performance

Confidential Deep Learning: Executing Proprietary Models on Untrusted Devices

no code implementations28 Aug 2019 Peter M. VanNostrand, Ioannis Kyriazis, Michelle Cheng, Tian Guo, Robert J. Walls

Performing deep learning on end-user devices provides fast offline inference results and can help protect the user's privacy.

Deep Learning

Exploring Interpretable LSTM Neural Networks over Multi-Variable Data

3 code implementations28 May 2019 Tian Guo, Tao Lin, Nino Antulov-Fantulin

In this paper, we explore the structure of LSTM recurrent neural networks to learn variable-wise hidden states, with the aim to capture different dynamics in multi-variable time series and distinguish the contribution of variables to the prediction.

Time Series Time Series Analysis

Low-dimensional statistical manifold embedding of directed graphs

1 code implementation ICLR 2020 Thorben Funke, Tian Guo, Alen Lancic, Nino Antulov-Fantulin

We propose a novel node embedding of directed graphs to statistical manifolds, which is based on a global minimization of pairwise relative entropy and graph geodesics in a non-linear way.

Sensing Social Media Signals for Cryptocurrency News

no code implementations27 Mar 2019 Johannes Beck, Roberta Huang, David Lindner, Tian Guo, Ce Zhang, Dirk Helbing, Nino Antulov-Fantulin

The ability to track and monitor relevant and important news in real-time is of crucial interest in multiple industrial sectors.

BIG-bench Machine Learning

Speeding up Deep Learning with Transient Servers

no code implementations28 Feb 2019 Shijian Li, Robert J. Walls, Lijie Xu, Tian Guo

Distributed training frameworks, like TensorFlow, have been proposed as a means to reduce the training time of deep learning models by using a cluster of GPU servers.

Deep Learning

Exploring the interpretability of LSTM neural networks over multi-variable data

no code implementations27 Sep 2018 Tian Guo, Tao Lin

In learning a predictive model over multivariate time series consisting of target and exogenous variables, the forecasting performance and interpretability of the model are both essential for deployment and uncovering knowledge behind the data.

Time Series Time Series Analysis

Multi-variable LSTM neural network for autoregressive exogenous model

no code implementations17 Jun 2018 Tian Guo, Tao Lin

In this paper, we propose multi-variable LSTM capable of accurate forecasting and variable importance interpretation for time series with exogenous variables.

Time Series Time Series Analysis

An interpretable LSTM neural network for autoregressive exogenous model

no code implementations14 Apr 2018 Tian Guo, Tao Lin, Yao Lu

In this paper, we propose an interpretable LSTM recurrent neural network, i. e., multi-variable LSTM for time series with exogenous variables.

Decoder Time Series +1

Bitcoin Volatility Forecasting with a Glimpse into Buy and Sell Orders

no code implementations12 Feb 2018 Tian Guo, Albert Bifet, Nino Antulov-Fantulin

In this paper, we study the ability to make the short-term prediction of the exchange price fluctuations towards the United States dollar for the Bitcoin market.

BIG-bench Machine Learning

Cloud-based or On-device: An Empirical Study of Mobile Deep Inference

no code implementations14 Jul 2017 Tian Guo

To utilize these cloud-based models, mobile apps will have to send input data over the network.

Deep Learning

Robust Online Time Series Prediction with Recurrent Neural Networks

no code implementations26 Dec 2016 Tian Guo, Zhao Xu, Xin Yao, Haifeng Chen, Karl Aberer, Koichi Funaya

Time series forecasting for streaming data plays an important role in many real applications, ranging from IoT systems, cyber-networks, to industrial systems and healthcare.

Time Series Time Series Forecasting +1

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