Search Results for author: Handong Li

Found 6 papers, 2 papers with code

COSA: Concatenated Sample Pretrained Vision-Language Foundation Model

2 code implementations15 Jun 2023 Sihan Chen, Xingjian He, Handong Li, Xiaojie Jin, Jiashi Feng, Jing Liu

Due to the limited scale and quality of video-text training corpus, most vision-language foundation models employ image-text datasets for pretraining and primarily focus on modeling visually semantic representations while disregarding temporal semantic representations and correlations.

Question Answering Retrieval

Enhancing Vision-Language Pre-Training with Jointly Learned Questioner and Dense Captioner

1 code implementation19 May 2023 Zikang Liu, Sihan Chen, Longteng Guo, Handong Li, Xingjian He, Jing Liu

In this paper, we propose a novel method called Joint QA and DC GEneration (JADE), which utilizes a pre-trained multimodal model and easily-crawled image-text pairs to automatically generate and filter large-scale VQA and dense captioning datasets.

Dense Captioning Image Captioning +4

Value-at-Risk forecasting model based on normal inverse Gaussian distribution driven by dynamic conditional score

no code implementations6 Oct 2021 Shijia Song, Handong Li

Under the framework of dynamic conditional score, we propose a parametric forecasting model for Value-at-Risk based on the normal inverse Gaussian distribution (Hereinafter NIG-DCS-VaR), which creatively incorporates intraday information into daily VaR forecast.

A Method for Predicting VaR by Aggregating Generalized Distributions Driven by the Dynamic Conditional Score

no code implementations6 Oct 2021 Shijia Song, Handong Li

Constructing a more effective value at risk (VaR) prediction model has long been a goal in financial risk management.


Research on Portfolio Liquidation Strategy under Discrete Times

no code implementations29 Mar 2021 Qixuan Luo, Yu Shi, Handong Li

The permanent impact generated by an asset in the portfolio during the liquidation will affect all assets, and the temporary impact generated by one asset will only affect itself.

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