- 2024 PPP15 - NCTS, Taipei
- 2022 PPP14 - Tamkang U., Tamsui
- 2019 PPP13 - NTNU, Taipei
- 2017 PPP12 - NCTU, Hsinchu
- 2015 PPP11 - organised by ASIOP hosted at Tamkang U.
- 2013 PPP10 - CYCU, Zhongli
- 2011 PPP9 - NCU, Zhongli
- 2009 PPP8 - NCKU, Tainan
- 2007 PPP7 - NTU, Taipei
- 2005 PPP6 - NTHU, Hsinchu
- 2000 PPP5 - Taitung (proceedings)
- 1998 PPP4 - NSYSU, Kaohshiung (proceedings)
- 1996 PPP3 - Taipei (proceedings)
- 1994 PPP2 - organised by ASIOP, held in Kenting National Park
- 1992 PPP1 - organised by ASIOP, held in Kenting National Park
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