53 citations · 152 across the 12 of their papers we have counts for
13 papers
Linking Opinion Dynamics and Emotional Expression in Online Communities: A Case Study of COVID-19 Vaccination Discourse in Japan
Qianyun Wu, Yukie Sano, Hideki Takayasu +1
Social media discourse on COVID-19 vaccination provides a valuable context for studying opinion formation, emotional expression, and social influence during a global crisis. While…
Stable Emotional Co-occurrence Patterns Revealed by Network Analysis of Social Media
Qianyun Wu, Orr Levy, Yoed N. Kenett +4
Examining emotion interactions as an emotion network in social media offers key insights into human psychology, yet few studies have explored how fluctuations in such emotion netwo…
Dissecting the gender divide: Authorship and acknowledgment in scientific publications
Keigo Kusumegi, Daniel E. Acuña, Yukie Sano
The issue of gender bias in scientific publications has been a topic of ongoing debate. One aspect of this debate concerns whether women receive equal credit for their contribution…
A two-phase model of collective memory decay with a dynamical switching point
Naoki Igarashi, Yukihiko Okada, Hiroki Sayama +1
Public memories of significant events shared within societies and groups have been conceptualized and studied as collective memory since the 1920s. Thanks to the recent advancement…
Burstiness of human physical activities and their characterization
Makoto Takeuchi, Yukie Sano
Human behaviour is heterogeneous and temporally fluctuates. Many studies have focused on inter-event time (IET) fluctuations and have reported that the IET distributions have a lon…
Citations and gender diversity in reciprocal acknowledgement networks
Keigo Kusumegi, Yukie Sano
Acknowledgements in scientific articles suggest not only gratitude, but also the interactions among scientists. In this study, we examine the acknowledgement interactions employing…
Identifying long-term periodic cycles and memories of collective emotion in online social media
Yukie Sano, Hideki Takayasu, Shlomo Havlin +1
Collective emotion has been traditionally evaluated by questionnaire survey on a limited number of people. Recently, big data of written texts on the Internet has been available fo…
Configuration model for correlation matrices preserving the node strength
Naoki Masuda, Sadamori Kojaku, Yukie Sano
Correlation matrices are a major type of multivariate data. To examine properties of a given correlation matrix, a common practice is to compare the same quantity between the origi…
Fake news propagate differently from real news even at early stages of spreading
Zilong Zhao, Jichang Zhao, Yukie Sano +6
Social media can be a double-edged sword for society, either as a convenient channel exchanging ideas or as an unexpected conduit circulating fake news through a large population.…
Statistical properties of fluctuations of time series representing the appearance of words in nationwide blog data and their applications: An example of observations and the modelling of fluctuation scalings of nonstationary time series
Hayafumi Watanabe, Yukie Sano, Hideki Takayasu +1
To elucidate the non-trivial empirical statistical properties of fluctuations of a typical non-steady time series representing the appearance of words in blogs, we investigated app…
Empirical analysis of collective human behavior for extraordinary events in blogosphere
Yukie Sano, Kenta Yamada, Hayafumi Watanabe +2
To uncover underlying mechanism of collective human dynamics, we survey more than 1.8 billion blog entries and observe the statistical properties of word appearances. We focus on w…
Statistics of collective human behaviors observed in blog entries
Y. Sano, K. Kaski, M. Takayasu
Collective human behaviors are analyzed using the time series of word appearances in blogs. As expected, we confirm that the number of fluctuations is approximated by a Poisson dis…
Macroscopic and microscopic statistical properties observed in blog entries
Yukie Sano, Misako Takayasu
We observe the statistical properties of blogs that are expected to reflect social human interaction. Firstly, we introduce a basic normalization preprocess that enables us to eval…