| Because of the demand for the sustainable development of environment,green building has become the direction of construction in our country,however,at present,China’s green building promotion with excessive government intervention,lack of market participation,on the path of although the Chinese government made a lot of effort to promote the development of green building,but its development is still very slow.At present,there are few relevant studies to investigate the public’s perception and attitude towards green buildings.In order to explore the Chinese public’s attention in the green building,trends,emotional orientation and focus,this paper collects and analyzes the green building related weibo user information and popular posts and comments,mainly USES the web crawler technology,combined with the LDA theme modeling and emotional analysis of two methods of text mining,explore the public’s negative emotional focus toward the green building,specific as follows:First,jieba word segmentation system is used to preprocess the crawled data text into word segmentation.On the one hand,LDA topic modeling is carried out on the comment text to mine the focus of different types of users.On the other hand,the method of part of speech template is used to extract feature words and emotion words,and the emotion dictionary in the field of green building is established by manual labeling,and the method of labeling the emotion intensity of each element of the emotion dictionary is given.The emotional dictionary elements constructed in this paper mainly include the collocation relations of emotional words,negative words,adverbs of degree and comments.After marking the emotional intensity of these elements,the emotional tendency of the comment text is calculated.Finally,the final comment phrase is presented in the form of visual word cloud to provide relevant Suggestions for the policy development and promotion direction of green building.Results show that public awareness is not high,for green building green building topic on weibo postings and fans quantity are not enough,in the people’s cognitive,greenconstruction mainly for vertical greening residential,passive houses and prefabricated construction,on the understanding of "green",people’s cognitive also has certain deviation,many people believe that green buildings is green,so on green plants of mosquito resistance,in the passive and prefabricated buildings,the negative emotions of people focused on technology and safety problems. |
