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Examining emotion interactions as an emotion network in social media offers key insights into human psychology, yet few studies have explored how fluctuations in such emotion network evolve during crises and normal times. This study…

社会与信息网络 · 计算机科学 2025-10-30 Qianyun Wu , Orr Levy , Yoed N. Kenett , Yukie Sano , Hideki Takayasu , Shlomo Havlin , Misako Takayasu

We perform a statistical analysis of emotionally annotated comments in two large online datasets, examining chains of consecutive posts in the discussions. Using comparisons with randomised data we show that there is a high level of…

NLP tasks are often limited by scarcity of manually annotated data. In social media sentiment analysis and related tasks, researchers have therefore used binarized emoticons and specific hashtags as forms of distant supervision. Our paper…

机器学习 · 统计学 2019-11-19 Bjarke Felbo , Alan Mislove , Anders Søgaard , Iyad Rahwan , Sune Lehmann

Background: The COVID-19 pandemic has affected our society and human well-being in various ways. In this study, we investigate how the pandemic has influenced people's emotions and psychological states compared to a pre-pandemic period…

计算与语言 · 计算机科学 2023-09-19 Tian Yan , Fang Liu

Studies of affect labeling, i.e. putting your feelings into words, indicate that it can attenuate positive and negative emotions. Here we track the evolution of individual emotions for tens of thousands of Twitter users by analyzing the…

社会与信息网络 · 计算机科学 2018-07-26 Rui Fan , Ali Varamesh , Onur Varol , Alexander Barron , Ingrid van de Leemput , Marten Scheffer , Johan Bollen

We present a survey to evaluate crypto-political, crypto-economic, and crypto-governance sentiment in people who are part of a blockchain ecosystem. Based on 3710 survey responses, we describe their beliefs, attitudes, and modes of…

计算机与社会 · 计算机科学 2023-01-10 Lucia M. Korpas , Seth Frey , Joshua Tan

The objective of this research is to examine how sentiment analysis can be employed to generate trading signals for the Foreign Exchange (Forex) market. The author assessed sentiment in social media posts and news articles pertaining to the…

统计金融 · 定量金融 2024-03-05 Oluwafemi F Olaiyapo

Research in emotion analysis is scattered across different label formats (e.g., polarity types, basic emotion categories, and affective dimensions), linguistic levels (word vs. sentence vs. discourse), and, of course, (few well-resourced…

计算与语言 · 计算机科学 2021-11-09 Sven Buechel , Luise Modersohn , Udo Hahn

The issue related to the quantification of the tail risk of cryptocurrencies is considered in this paper. The statistical methods used in the study are those concerning recent developments in Extreme Value Theory (EVT) for weakly dependent…

风险管理 · 定量金融 2023-11-30 Andrea Teruzzi

Reddit is a major venue for mental-health information interaction and peer support, where privacy concerns increasingly surface in user discourse. Thus, we analyze privacy-related discussions across 14 mental-health and regulatory…

计算机与社会 · 计算机科学 2025-12-19 Jai Kruthunz Naveen Kumar , Aishwarya Umeshkumar Surani , Harkirat Singh , Sanchari Das

Cryptocurrencies, especially Bitcoin (BTC), which comprise a new digital asset class, have drawn extraordinary worldwide attention. The characteristics of the cryptocurrency/BTC include a high level of speculation, extreme volatility and…

统计金融 · 定量金融 2020-09-24 Ai Jun Hou , Weining Wang , Cathy Y. H. Chen , Wolfgang Karl Härdle

Microblogs are widely used to express people's opinions and feelings in daily life. Sentiment analysis (SA) can timely detect personal sentiment polarities through analyzing text. Deep learning approaches have been broadly used in SA but…

计算与语言 · 计算机科学 2019-12-06 Yuni Lai , Linfeng Zhang , Donghong Han , Rui Zhou , Guoren Wang

A key challenge for Bitcoin cryptocurrency holders, such as startups using ICOs to raise funding, is managing their FX risk. Specifically, a misinformed decision to convert Bitcoin to fiat currency could, by itself, cost USD millions. In…

风险管理 · 定量金融 2018-05-15 Cuneyt Akcora , Matthew Dixon , Yulia Gel , Murat Kantarcioglu

The development of emotion detection technology has emerged as a highly valuable possibility in the corporate sector due to the nearly limitless uses of this new discipline, particularly with the unceasing propagation of social data. In…

In order to develop more precise and functional affective applications, it is necessary to achieve a balance between the psychology and the engineering applied to emotions. Signals from the central and peripheral nervous systems have been…

人机交互 · 计算机科学 2019-05-02 Jennifer Sorinas , Jose Manuel Ferrández , Eduardo Fernandez

This paper will propose a novel machine learning based portfolio management method in the context of the cryptocurrency market. Previous researchers mainly focus on the prediction of the movement for specific cryptocurrency such as the…

机器学习 · 计算机科学 2025-12-10 Zijiang Yang

This paper describes a large global dataset on people's discourse and responses to the COVID-19 pandemic over the Twitter platform. From 28 January 2020 to 1 June 2022, we collected and processed over 252 million Twitter posts from more…

计算与语言 · 计算机科学 2022-06-28 Raj Kumar Gupta , Ajay Vishwanath , Yinping Yang

Blockchain finance has become a part of the world financial system, most typically manifested in the attention to the price of Bitcoin. However, a great deal of work is still limited to using technical indicators to capture Bitcoin price…

统计金融 · 定量金融 2022-05-03 Panpan Li , Shengbo Gong , Shaocong Xu , Jiajun Zhou , Yu Shanqing , Qi Xuan

To understand the relationship between news sentiment and company stock price movements, and to better understand connectivity among companies, we define an algorithm for measuring sentiment-based network risk. The algorithm ranks companies…

风险管理 · 定量金融 2018-05-16 Thomas Forss , Peter Sarlin

Bitcoin has increased investment interests in people during the last decade. We have seen an increase in the number of posts on social media platforms about cryptocurrency, especially Bitcoin. This project focuses on analyzing user tweet…

人工智能 · 计算机科学 2024-12-04 Ashutosh Hathidara , Gaurav Atavale , Suyash Chaudhary
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