Search Results for author: Zhen Jia

Found 13 papers, 5 papers with code

Complex Temporal Question Answering on Knowledge Graphs

1 code implementation18 Sep 2021 Zhen Jia, Soumajit Pramanik, Rishiraj Saha Roy, Gerhard Weikum

This work presents EXAQT, the first end-to-end system for answering complex temporal questions that have multiple entities and predicates, and associated temporal conditions.

16k Entity Embeddings +2

Manifoldron: Direct Space Partition via Manifold Discovery

2 code implementations14 Jan 2022 Dayang Wang, Feng-Lei Fan, Bo-Jian Hou, Hao Zhang, Zhen Jia, Boce Zhou, Rongjie Lai, Hengyong Yu, Fei Wang

A neural network with the widely-used ReLU activation has been shown to partition the sample space into many convex polytopes for prediction.

BIG-bench Machine Learning

Multi-Semantic Fusion Model for Generalized Zero-Shot Skeleton-Based Action Recognition

1 code implementation18 Sep 2023 Ming-Zhe Li, Zhen Jia, Zhang Zhang, Zhanyu Ma, Liang Wang

In order to solve this dilemma, we propose a multi-semantic fusion (MSF) model for improving the performance of GZSSAR, where two kinds of class-level textual descriptions (i. e., action descriptions and motion descriptions), are collected as auxiliary semantic information to enhance the learning efficacy of generalizable skeleton features.

Action Recognition Generalized Zero Shot skeletal action recognition +1

DynaPipe: Optimizing Multi-task Training through Dynamic Pipelines

2 code implementations17 Nov 2023 Chenyu Jiang, Zhen Jia, Shuai Zheng, Yida Wang, Chuan Wu

This paper proposes a dynamic micro-batching approach to tackle sequence length variation and enable efficient multi-task model training.

Language Modelling Large Language Model +3

TEQUILA: Temporal Question Answering over Knowledge Bases

no code implementations9 Aug 2019 Zhen Jia, Abdalghani Abujabal, Rishiraj Saha Roy, Jannik Stroetgen, Gerhard Weikum

An important case, addressed here, is that of temporal questions, where cues for temporal relations need to be discovered and handled.

Question Answering

Focal and Efficient IOU Loss for Accurate Bounding Box Regression

no code implementations20 Jan 2021 Yi-Fan Zhang, Weiqiang Ren, Zhang Zhang, Zhen Jia, Liang Wang, Tieniu Tan

(ii) Most of the loss functions ignore the imbalance problem in BBR that the large number of anchor boxes which have small overlaps with the target boxes contribute most to the optimization of BBR.

object-detection Object Detection +2

DRAformer: Differentially Reconstructed Attention Transformer for Time-Series Forecasting

no code implementations11 Jun 2022 Benhan Li, Shengdong Du, Tianrui Li, Jie Hu, Zhen Jia

Time-series forecasting plays an important role in many real-world scenarios, such as equipment life cycle forecasting, weather forecasting, and traffic flow forecasting.

Time Series Time Series Forecasting +1

Human Image Generation: A Comprehensive Survey

no code implementations17 Dec 2022 Zhen Jia, Zhang Zhang, Liang Wang, Tieniu Tan

Image and video synthesis has become a blooming topic in computer vision and machine learning communities along with the developments of deep generative models, due to its great academic and application value.

Data Augmentation Image Generation +2

Soft-IntroVAE for Continuous Latent space Image Super-Resolution

no code implementations18 Jul 2023 Zhi-Song Liu, Zijia Wang, Zhen Jia

Continuous image super-resolution (SR) recently receives a lot of attention from researchers, for its practical and flexible image scaling for various displays.

Denoising Image Restoration +1

Arbitrary point cloud upsampling via Dual Back-Projection Network

no code implementations18 Jul 2023 Zhi-Song Liu, Zijia Wang, Zhen Jia

Point cloud upsampling is an approach to increase the density of the point cloud so that detailed geometric information can be restored.

point cloud upsampling set matching

Faithful Temporal Question Answering over Heterogeneous Sources

no code implementations23 Feb 2024 Zhen Jia, Philipp Christmann, Gerhard Weikum

The method has three stages: (i) understanding the question and its temporal conditions, (ii) retrieving evidence from all sources, and (iii) faithfully answering the question.

Question Answering

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