..., data were collected from Twitter. Tweets that contain the hashtag and the word “digital contact tracing” were crawled using Python library Tweepy. Tweets across countries of four continents were collected from March 2020 to August 2020. In total, 70,212 tweets were used for this study. Using...

...Yu Suzuki; Hiromitsu Ohara; Akiyo Nadamoto Purpose This paper aims to propose a method for summarizing the topics of tweets using the Wikipedia category structure as common knowledge for supplementing the understanding of the Twitter user’s interests. There are many topics in the tweets...

.... Pak et al. (2010) use Twitter for emoticons of two types (happy emoticons and sad emoticons) to denote positive and negative sentiment. Go et al. (2009) construct corpora using emoticons; then, they classify the tweets as positive or negative. In contrast, our proposed method...

...Dr Matthias Steinbauer, Dr Maria Indrawan-Santiago, Dr Gabriele Anderst-Kotsis; Tadahiko Kumamoto; Hitomi Wada; Tomoya Suzuki Purpose – The purpose of this paper is to propose a Web application system for visualizing Twitter users based on temporal changes in the impressions received from...