Human-based computation

upright=1.35|thumb|This CAPTCHA (GIMPY-R, c. 2005) of "smwm" obscures its message from computer interpretation by twisting the letters and adding a slight background color gradient.

collaborative approach that involves members of the public in scientific research

reCAPTCHA Inc. is a corporation owned by its parent company Google, which produces the CAPTCHA system. It serves to web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page was being downloaded automatically. Since version 3, reCAPTCHA will never interrupt users and is intended to run automatically when users load pages or click buttons.

Guatemalan entrepreneur and computer scientist

crowdsourced astronomy project

micro-work service subsidiary of Amazon

Zooniverse is a global platform for people-powered research, also known as participatory science or citizen science. It is a collaboration between Chicago’s Adler Planetarium, the University of Oxford, and the University of Minnesota. It is home to some of the Internet's largest, most popular and most successful citizen science projects.

web-based proofreading project

citizen science project to find exoplanets

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knowledge market

Microwork is a series of many small tasks which together comprise a large, unified project completed by many people over the Internet. Microwork is considered the smallest unit of work in a virtual assembly line. It is most often used to describe tasks for which no efficient algorithm has been devised and require human intelligence to complete reliably. The term was developed in 2008 by Leila Chirayath Janah of Samasource.

human-guided search engine

Computer Science Technique

type of conditions of computer work

citizen science project

citizen science project