RT Journal Article SR 00 A1 Nurmukhametov, O.R. A1 Baklanov, A. T1 A method for increasing the accuracy of image annotating in crowd-sourcing JF Modern Problems in Mathematics and its Applications YR 2016 FD 2016 VO 1662 SP 206 OP 214 K1 Crowdsourcing; Data quality; Geo-Wiki; Image classification AB Crowdsourcing is a new approach to solve tasks when a group of volunteers replaces experts. Recent results show that crowdsourcing is an efficient tool for annotating large datasets. Geo-Wiki is an example of successful citizen science projects. The goal of Geo-Wiki project is to improve a global land cover map by applying crowdsourcing for image recognition. In our research, we investigate methods for increasing reliability of data collected during The Cropland Capture Game (Geo-Wiki). In this regard, we performed analysis of all main steps of the crowdsourcing campaign: image processing and aggregation of collected votes. During the research, we used methods of Computer Vision and Machine Learning. This allowed us to increase accuracy of the aggregated votes from 76% to 87%. Copyright © by the paper's authors. PB CEUR Workshop Proceedings SN 1613-0073 LK https://pure.iiasa.ac.at/id/eprint/13833/ UL http://ceur-ws.org/Vol-1662/