Diffusion of Recommendation through a Trust Network. - Yutaka Matsuo; Hikaru Yamamoto (ICWSM, 2007)

Generating Social Network Features for Link-Based Classification. - Jun Karamon; Yutaka Matsuo; Hikaru Yamamoto; Mitsuru Ishizuka (PKDD, 2007)

Finding Influencers and Consumer Insights in the Blogosphere. - Naohiro Matsumura; Hikaru Yamamoto; Daisuke Tomozawa (ICWSM, 2008)

The Power of Grassroots Influentials: The Optimal Heterophily between Sender and Receiver. - Hikaru Yamamoto; Naohiro Matsumura (CSE (4), 2009)

Optimal Heterophily for Word-of-Mouth Diffusion. - Hikaru Yamamoto; Naohiro Matsumura (ICWSM, 2009)

Community gravity: measuring bidirectional effects by trust and rating on online social networks. - Yutaka Matsuo; Hikaru Yamamoto (WWW, 2009)

Monetary Value of Customer Networks in Mobile Social Networking Services. - Naohiro Matsumura; Hikaru Yamamoto (ICWSM, 2010)

Marketing Ecosystem: The Dynamics of Twitter, TV Advertising, and Customer Acquisition. - Hikaru Yamamoto; Naohiro Matsumura (The Social Mobile Web, 2011)

The Effect of Relational Context on Personal Influence. - Hikaru Yamamoto; Naohiro Matsumura (SocialCom/PASSAT, 2011)

Shikakeology and Marketing. - Hikaru Yamamoto (AAAI Spring Symposium: Shikakeology, 2013)

Enhancing engagement behavior using Shikake. - Hikaru Yamamoto (AI Soc., 2015)

Proactive or Reactive? Platform Governance Strategy in C2C Marketplace. - Hikaru Yamamoto; Hiroumi Ohshima (PACIS, 2017)

Angels or demons? Classifying desirable heavy users and undesirable power sellers in online C2C marketplace. - Hikaru Yamamoto; Nina Sugiyama; Fujio Toriumi; Hikaru Kashida; Takuma Yamaguchi (J. Comput. Soc. Sci., 2019)