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Table 2 OSS evaluation indicator proposed in the prior studies. “Evaluation Indicator” denotes the used evaluation indicators for investigation, “Static” indicates whether the authors used data at a single point to represent the whole time

From: Evaluation indicators for open-source software: a review

Study

Year

Evaluation Indicator

Static

  

Project activity

 

Crowston et al.(2004)

2004

Developer number

Yes

  

Bug fixing time

 
  

Download number

 
  

Developer type

 
  

Developer satisfaction

 
  

User satisfaction

 

Crowston et al. (2003)

2003

Users’ participation

Yes

  

Quality

 
  

Project process

 
  

Project recognition codes

 
  

Developer number

 

Garousi (2009)

2009

Download number

No

  

Bug-fixing performance

 
  

License type

 
  

Project age

 

Sen (2006)

2006

Project status

Yes

  

Potential users

 
  

Project system compatibility

 
  

Concurrent Versioning Systems (CVS) code commit

 
  

Download number

 

Grewal (2006)

2006

Bugs closed per month

Yes

  

Support requests per month

 
  

Number of page views

 
  

Add new features

 

Raymond (1999)

1999

Fix bugs

Yes

  

Release new versions

 
  

Output of each contributor

 
  

License type

 

Fershtman et al. (2004)

2004

Program language

Yes

  

Operating system

 
  

Target users

 
  

Ranking of activity percentile

 

Lerner (2005)

2005

Developers number

Yes

  

Bugs or errors number

 

Midha et al. (2012)

2012

Download number

No

  

Concurrent Versioning Systems (CVS) code commit

 

Colazo (2005)

2005

Developer number

Yes

  

Developer contribution

 

Tsay et al. (2012)

2012

Developer interest

No

  

Developer contribution

 
  

Project activity

 

Subramaniam (2009)

2009

Developer interest

Yes

  

User interest

 
  

Project size

 

Beecher (2008)

2008

Developer

Yes

  

Project activity

 
  

Hit number

 

Comino et al. (2007)

2007

Project status

Yes

Giuri et al. (2004)

 

Developer capability

Yes

  

Project age

 

Schweik (2009)

2009

Project activity

Yes

  

Downloads number

 
  

Developer interest

 
  

Project activity

 

Ghapanchi (2015)

2015

User interest

Yes

  

Developer pernancement

 
  

Developer pernancement

 

Chang (2018)

2018

Developer satisfaction

Yes

  

Project status

 

Feitelson et al. (2006)

2006

Download number

Yes

Israeli and Feitelson (2007)

2007

Download number

Yes

  

Release new version

 

Emanuel et al. (2010)

2010

Download number

Yes

  

Developer contribution

 

Ke et al. (2011)

2011

Developer capability

Yes

  

User satisfaction

 

Margan and Čandrlić (2015)

2015

Developer capability

Yes

  

Developer interest

 
  

Developer number

 

Joy et al. (2018)

2018

Project size

Yes

  

Project age

 

Peng (2019

2019

Connected projects

Yes

  

Watching number

 

Crowston and Shamshurin (2017)

2017

Volume of communication

Yes