如何检测来自社交媒体的宣传? 利用语义和微调的语言模型
Muhammad Shahid Iqbal Malik1,2, Tahir Imran2, Jamjoom Mona Mamdouh3
1Department of Computer Science, School of Data Analysis and Artificial Intelligence, Higher School of Economics, Moscow, Russia.
PeerJ. Computer science
|June 22, 2023
概括
这项研究引入了使用机器学习的强大宣传检测框架. 将字符三图与BERT和特征选择相结合,在识别在线宣传方面获得了超过97.60%的准确性.
科学领域:
- 计算社会科学 计算社会科学
- 自然语言处理自然语言处理.
- 机器学习 机器学习
背景情况:
- 在线宣传对公共卫生和民主机构构成重大威胁.
- 有效地检测宣传对于减轻其社会影响至关重要.
研究的目的:
- 开发和评估一个强大的宣传检测框架,使用二进制分类模型.
- 探索各种功能工程技术和深度学习模型,以提高检测准确度.
主要方法:
- 调查了多个特征模型,包括部分语音,LIWC,词n-grams,ELMo,FastText,word2vec,LSA和字符三字.
- 微调BERT模型并探索过量采样技术 (SMOTE ENN) 来检测数据集不平衡.
- 集成的功能选择以提高模型性能.
主要成果:
- 字符三图形特征展示了卓越的独立性能.
- 字符三图形+BERT和字符三图形+word2vec的组合表现优于现有的基线.
- 精心调整的320个序列长度的BERT被证明是有效的.
- 功能选择进一步提高了性能,实现了超过97.60%的回忆,F1得分和AUC.
结论:
- 拟议的框架,特别是字符三角形和BERT,为在线宣传检测提供了一个非常有效的解决方案.
- 这些发现可以帮助组织公共新闻网站的新闻内容,并打击错误信息.
相关概念视频
Stereotype Content Model
14.8K
The Stereotype Content Model (SCM) was first proposed by Susan Fiske and her colleagues (Fiske, Cuddy, Glick & Xu, 2002; see also Fiske, 2012 and Fiske, 2017). The SCM specifies that when someone encounters a new group, they will stereotype them based on two metrics: warmth—or that group’s perceived intent, and how likely they are to provide help or inflict harm—and competence—or their ability to carry out that objective. Depending on the warmth-competence...
14.8K
Social Proof
27.7K
Social proof is a form of persuasion based on comparison and conformity. People compare their behavior and actions to what others are doing and will change to conform to do what their peers do.
27.7K
Routes of Persuasion
64.2K
Persuasion is the process of changing our attitude toward something based on some kind of communication. Much of the persuasion we experience comes from outside forces. How do people convince others to change their attitudes, beliefs, and behaviors? What communications do you receive that attempt to persuade you to change your attitudes, beliefs, and behaviors?
64.2K
Social Traps
22.4K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
22.4K
Nonconscious Mimicry
4.6K
Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
4.6K
Group Polarization
34.4K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.4K


