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Santiago Castro

5 accepted papers

2024

Has It All Been Solved? Open NLP Research Questions Not Solved by Large Language Models

COLING 2024main

Recent progress in large language models (LLMs) has enabled the deployment of many generative NLP applications. At the same time, it has also led to a misleading public discourse that “it’s all been solved.” Not surprisingly, this has, in turn, made many NLP researchers – especially those at the beg…

Cited by 9SourcePDFScholar
2023

Phenaki: Variable Length Video Generation from Open Domain Textual Descriptions

ICLR 2023poster

We present Phenaki, a model capable of realistic video synthesis given a sequence of textual prompts. Generating videos from text is particularly challenging due to the computational cost, limited quantities of high quality text-video data and variable length of videos. To address these issues, we i…

Cited by 440SourcePDFScholar
2022

FIBER: Fill-in-the-Blanks as a Challenging Video Understanding Evaluation Framework

ACL 2022long

We propose fill-in-the-blanks as a video understanding evaluation framework and introduce FIBER – a novel dataset consisting of 28,000 videos and descriptions in support of this evaluation framework. The fill-in-the-blanks setting tests a model’s understanding of a video by requiring it to predict a…

2022

In-the-Wild Video Question Answering

COLING 2022main

Existing video understanding datasets mostly focus on human interactions, with little attention being paid to the “in the wild” settings, where the videos are recorded outdoors. We propose WILDQA, a video understanding dataset of videos recorded in outside settings. In addition to video question ans…

Cited by 0SourcePDFScholar
2021

WhyAct: Identifying Action Reasons in Lifestyle Vlogs

EMNLP 2021main

We aim to automatically identify human action reasons in online videos. We focus on the widespread genre of lifestyle vlogs, in which people perform actions while verbally describing them. We introduce and make publicly available the WhyAct dataset, consisting of 1,077 visual actions manually annota…