1. Overview Crowd-Powered Systems Alexander J. Quinn January 15, 2015

2. Million Minds

3. Human Computation “…a paradigm for utilizing human processing power to solve problems that computers cannot yet solve.” Luis von Ahn. 2005. Human Computation. Doctoral Thesis, CMU.

4. Human Computation

5. Soylent Credit: Michael Bernstein, et al. http://projects.csail.mit.edu/soylent/

6. Crowdsourcing “Crowdsourcing is the act of taking a job traditionally performed by a designated agent (usually an employee) and outsourcing it to an undefined, generally large group of people in the form of an open call.” Jeff Howe. 2007. Crowdsourcing: A Definition. http://crowdsourcing.typepad.com

7. Human Computation Crowdsourcing

8. Monotrans Credit: Chang Hu, et al. http://www.cs.umd.edu/hcil/monotrans/

9. Social Computing “… applications and services that facilitate collective action and social interaction online with rich exchange of multimedia information and evolution of aggregate knowledge…” Parameswaran, M. & Whinston, A.B. 2007. Social Computing: An Overview. CAIS 19:37, (2007), 762-780

10. Human Computation Crowdsourcing Social Computing

11. Data Mining “the application of specific algorithms for extracting patterns from data.” Fayyad, U. et al. 1996. Knowledge Discovery and Data Mining: Towards a Unifying Framework. KDD 1996.

12. Human Computation Crowdsourcing Social Computing Data Mining

13. Collective Intelligence "… groups of individuals doing things collectively that seem intelligent.” Malone et al. 2009. Harnessing Crowds: Mapping The Genome of Collective Intelligence. MIT Sloan Research Paper.

14. Collective Intelligence Human Computation Crowdsourcing Social Computing Data Mining

15. Dimensions  Motivation  Quality control  Aggregation  Human skill  Process order  Task-request cardinality