Urban Mimetic Space And Mimetic Behavior Based On Flickr Geo-tag Images

Photo sharing social website is a media platform on which users can upload,share,download,manage photos,and add photo titles,descriptions,tags,comments by computer or mobile phone.Social networking sites with photographs have become one of the world's mainstream and the most popular form social network model.When these photos possess geographical attributes and time stamping,they become potential geographic information.Taking dalian city as an example,extracted the geo-tagged photos from Flickr social network media,established the photogrph databases,including the data of picture ID,longitude,latitude,time,photographer imformation etc.,the urban pseudo environment differentiation and process were analyzed.Subsequently,the spatial and temporal behavior characterics and classification were introduced.Meanwhile,the picture's semantic information such as tags and comments etc.was deconstructed.Finally,the interaction mechanism as well as their mapping relationships between the pseudo environment and the realistic environment were established.This study provides for the research of urban and behavior geography with media geography new perspective,which has immeasurable vision of social value in new geographic information age and globalization world.The main results and conclusions are listed as following:(1)urban pseudo environment differentiation and evolution process based on geotagged photosDalian Flickr geotagged photos pseudo spatial pattern is "?" structure in Chinese character,namely two horizontal lines and one vertical line,the lower horizontal line is longer than the above horizontal line.And three kind of pseudo sea land relationship model was presented,namely land model,land and sea intersection model,offshore mode.The monthly pseudo spatial variations are affected by seasonal factors,holidays and city events elements.Dalian pseudo spatial development evolution process experienced budding period(1997 to 2006),the development period(2007-2010),)and stable period(2011-present).From 1997 to 2014,the hot focus of pseudo space is a seesaw type transfer between the Zhongshan square and Xinghai Square;(2)urban pseudo behavior characteristics and types based on geotagged photosBy tracking analysis and standard deviation ellipse,user pseudo behavior center point,discrete and direction are explored;Dalian geo-tagged photos major domestic spreaders are from Dalian,Beijing,Shanghai,foreign main spreaders are from North America,Europe,East Asia and Southeast asia.Spreaders pseudo behavior activity are the lowest vitality during 21:00 pm to 7:00 am,the pseudo behavior activity highest vitality appeared at noon 12 and 14 o'clock,which means pseudo activity have double peak.Xinghai squre and Zhongshan squre are the most active regions in terms of pseudo behaviour activity.There are six types of pseudo behaviours,which are tourist behavior,leisure behavior,coastal play behavior,cultural experience behavior,living experience behavior,business meeting behavior.(3)The characteristics and spatial differentiations study of the semantic information including the title,description,tagsThe semantic information including the title,description,tag,comment,and evaluation of geotagged pictures semantic information was analyzed from the richness,simplicity,accuracy,completeness and ease degree of extraction.It elaborated the multi-language features of Flickr semantic information,the most frequent language of Dalian Flickr semantic information is English,followed by Chinese(simplified and traditional)and the Japanese,others are French,Russian,Korean,German,Spanish and other languages.Dalian Flickr tags distribution frequency follows a power-law distribution,the low frequency tag is more personalized and flexibility.Dalian Flickr tags covers Dalian regional overview,business meetings,photography related terms,tourism and leisure attractions,urban places of various types,go out activities,animals and plants,portrait and name.(4)The spacial mapping relationship and the interaction mechanism between pseudo environment and realistic environmentPseudo space and pseudo behaviour are based on realistic foundation and psychological foundation;spreader is the decision-maker of pseudo information which deliver to the audience through the media symbolic language or symbols.Evaluated the Flickr photos influence in Dalian with index combined the number of be reviewed and be favorited.,selected 150 pictures of the most influential Flickr photograph in Dalian,systematically compared with the reality environment from natural systems,human systems,support systems,building system,social system,which reflect Dalian urban characteristics of Northeast China's important economic,trade,the port city.