Duplicate entries in online communities waste time and resources for both users and moderators. Users spend more time searching for information, reducing satisfaction and engagement. Moderators spend extra time moderating, taking away from other tasks and potentially creating confusion. 

Waste Time and Resources for Users and the Moderators.

Duplicate entries in online communities can damage the quality fo content available to user. They can harm content quality by creating confusion and inconsistency in the information presented to users. Furthermore, they can also amplify the spread of inaccurate information, potentially leading to the rapid spread of misinformation.

Duplicate Entries Compromises Content Quality

Duplicate entries in online communities can exacerbate conflicts among users. When users engage in duplicated discussions, it can lead to differences in opinion or misunderstandings that may escalate into conflicts.

Exacerbating Conflicts Among Users

Duplicate entries can make an online community appear disorganized and its information unreliable. When copies repeat or contradict one another, users may lose trust in the community, reducing engagement and participation.

Reputational Harm Caused by Duplicate Entries in Online Communities

- Content quality control
- Limit resource cost
- Limit conflicts among users
- Protect Reputation

San Jose State University

University of Michigan - Ann Arbor

Duplicate knowledge entities in online communities occur when multiple sources—such as articles, books, websites, or videos—repeat the same existing knowledge. Two entities are considered duplicates if their core topics are identical, even if they are not exact, 100% copies of one another.

Duplicate Knowledge Entities in Online Communities

- Disconnected Knowledge Entities
- Stand Alone Learning Content

Causes of Dupicate Knowledge Entities in Online Communities 

Duplicate knowledge entities can be used to create an illusion of credibility, where false or misleading information is repeated enough times that it becomes accepted as true. This may create the perception of consensus and credibility around false or misleading claims. This is particularly problematic in the case of disinformation, where the intent is to intentionally deceive or manipulate an audience.

Duplicate knowledge entities --> Vulnerability to Misinformation and Disinformation in Online Communities

- Stack Overflow
- Quora
- Reddit
- Wikipedia
- etc

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