The successful execution of knowledge crowdsourcing (KC) tasks requires contributors to possess knowledge or mastery in a specific domain. The need for expert contributors limits the capacity of online crowdsourcing marketplaces to cope with KC tasks. While online social platforms emerge as a viable alternative source of expert contributors, how to successfully invite them remains an open research question. We contribute an experiment in expert contributors invitation where we study the performance of two invitation strategies: one addressed to the individual expert contributors, and one addressed to communities of knowledge. We target reddit, a popular social bookmarking platform, to seek expert contributors in the botany and ornithology domains of knowledge, and to invite them to contribute an artwork annotation KC task. Results provide novel insights on the effectiveness of direct invitations strategies, but show how soliciting collaboration through communities yields, in the context of our experiment, more contributions.

Original languageEnglish
Title of host publicationWeb Engineering - 16th International Conference, ICWE 2016
Subtitle of host publicationProceedings
EditorsAlessandro Bozzon, Philippe Cudre-Maroux, Cesare Pautasso
Place of PublicationCham
Number of pages9
ISBN (Electronic)978-3-319-38791-8
ISBN (Print)978-3-319-38790-1
Publication statusPublished - 2016
Event16th International Conference on Web Engineering, ICWE 2016 - Lugano, Switzerland
Duration: 6 Jun 20169 Jun 2016

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference16th International Conference on Web Engineering, ICWE 2016

ID: 10683137