社会计算复习 之 Crowsourcing Wisdom of crowds prediction markets

什么是Crowdsourcing,众包

众包是一种获取资源的一种模式,个人和组织可以利用网络用户来获取需要的服务和想法

因为群体可以比个人做的好,大群体可以比小群体做的好

4 characteristics of smart crowds

  • Diversity of opinion,每个人都要有一些的private information
  • Independent, 每个人的意见不受其他人的影响
  • Decentralization, 每个人都是专注的地方和自己的知识 (local knowledge)
  • Aggregation,将私人判断转换为集体决定

有时候会受到peer pressure和authority interfere

Information Cascade 随大流

自然的和不自然的跟从别人的行为,因为人类的个体通过学习别人的生存技能而得以生存。

随大流的开始者和结束者

都是overconfident people, 因为他们相比大家的选择,他们对自己的选择更加有信心

Overconfident people – who value their own private information more than the public one

Decentralization 的问题

有时候,需要有一个机制可以将不同的信息和意见统一成一个。

The prediction Market

用来收集信息的市场,输赢取决于某一特殊事件,明天美股大盘上升还是下降

小团体和Wise crowd的不同点

people think themselves as members of a team, while in a market, think of themselves as Independent actors.

When are small group productive

  • When there is a clear answer
  • Diversity of group is important
  • the order of speaking is important

Crowd Sourcing

Crowd + outsourcing = crowdsourcing
Main concept is getting something done using others help.

Crowdwork

Microwork, is breaking a large task into smaller tasks and sub tasks. Then is ditributed to internet participants.
即,分包,将一个项目分为多个人做完

Macrowork, is task can be done by independently, and usually takes a determined amount of time, like deadline.
即,整包,将一个项目给一个人做完


想要看到更多玮哥的学习笔记、考试复习资料、面试准备资料?想要看到IBM工作时期的技术积累和国外初创公司的经验总结?

image

敬请关注:

玮哥的博客 —— CSDN的传送门

玮哥的博客 —— 的传送门

玮哥的博客 —— 博客园的传送门

玮哥的博客 —— 51Testing的传送门

你可能感兴趣的:(社会计算复习 之 Crowsourcing Wisdom of crowds prediction markets)