| The two-way collaborative interaction in the Web 2.0 era has made volunteer geographic information,a new type of crowd-sourced geographic data,a research hotspot.Open Street Map(hereinafter referred to as OSM)is the most representative geographic information crowdsourcing project,and currently has more than seven million registered users.This article takes OSM volunteers as the research object,and analyzes and compares the editing behaviors of all volunteers and volunteers in different countries in a long time series.It aims to better understand the sustainable development status of the OSM project.The survival time,contribution and participation,editor continuity,and activeness of the participants were analyzed,and the current survival and development status of volunteers in the OSM project was explored.The main findings of this article are as follows: Although the OSM project has a large increase in registered users,more than 60% of the volunteers cannot be converted into highly active volunteers(monthly editing volume>5=times);the development of developed countries is generally better than that of developing countries.Higher than the global average,but the vitality of volunteers is unstable.At present,it seems that the highly energetic volunteers accumulated in the early days have been able to continue to contribute(average active duration is 1.67 years),which provides a basic guarantee for the continuous development of OSM;however,if OSM is to ensure its longevity,certain incentives should be considered Measures are taken to improve the vitality of newly recruited volunteers and the continuity of editing,such as combining OSM contributions with video games,improving the friendliness of the map editor,and providing better social functions,etc.The main work and results of the thesis are as follows:(1)Statistical analysis was carried out on the editing behavior of OSM volunteers from 2005 to 2019 under different time scales to explore the laws of volunteer editing behavior and project development process.The results show that there are two key time points for the development of OSM: the number of edits increased significantly in 2009,which is closely related to the launch of the new version of OSM API 0.6,and the contribution of volunteers represented by Germany accounted for a larger portion;the global junior volunteers in mid-2016 The number has grown substantially,with "one-off" volunteers represented by the United States playing a leading role.In addition,there is a "7-day" cycle rule for volunteer editing.(2)Quantitative analysis of the volunteer’s survival period and participation degree,exploring the law of the volunteer’s survival time between the first and last editing,combining with historical important events for correlation analysis,and using the Gini coefficient and Lorentz curve to analyze the volunteers The degree of unequal participation.The results showed that more than 90% of the volunteers in OSM survived for less than 2 years,with the average time span concentrated in 0.35 hours,2.21 days and 1.67 years;the participation of volunteers was severely uneven,and the degree of inequality was positive with the amount of regional data import Ratio,and intensifies over time.(3)In terms of the retention rate of new volunteers and the changes in volunteers of different active levels,horizontal comparisons of volunteer editing behaviors were carried out by country and region,and vertical comparisons were made with the global average development level.The results show that the retention rate of OSM volunteers in the next month has decreased over time,but they are all above 10%,and the user stickiness is high;the number of high,medium,and junior volunteers all over the world has shown an increasing trend,and there is no sign of decline;globally;The proportion of low-energy volunteers increased over time.Among the eight countries,volunteer editors in Germany and Japan have the highest continuity and activity,while volunteers in the United States and developing countries are less active. |
PDF Full Text Request