# Bibliometric Analysis of Social Robotics Research: Identifying Research Trends and Knowledgebase
## 3 Results
### Research Trends in Social Robotics
Discussions on the uncanny valley [39] and anthropomorphism [40] are a common trend in this group of research. In particular, it focuses on how to achieve human-like communication. Recent discussions cover better design of artificial on-screen agents and robots [41]. Fear and likability [42] are common aspects measured in these articles. \begin{table}
\begin{tabular}{l c} \hline \hline
**Journal/Conference** & **\% of Articles** \\ \hline Lecture notes on artificial intelligence & 6.1\% \\ International journal of social robotics & 5.9\% \\ ACM/IEEE international conference on human-robot interaction & 3.7\% \\ Lecture notes on computer science & 2.8\% \\ IEEE robot and human interactive communication & 2.5\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Most frequent journals and conferences in social robotics. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \# & **Cluster Label** & **County** & **Institution** & **Journals/Conferences** & **Authors** \\ \hline \multirow{4}{*}{7} & \multirow{4}{*}{**Robots for the elderly**} & USA & Ilmenau Univ. Technol. & \multirow{4}{*}{ACM/IEEE HRI} & Gross, HM \\  & & Japan & Univ. So Calif & & \multirow{2}{*}{Matier, MJ.} \\  & **and telepresence** & Germany & Univ. Ortebo & & \\  & 2013.0; [34] & UK & Georgia Inst. Technol. & & \\  & & Sweden & Saitama Univ. & & \\ \hline \multirow{4}{*}{8} & \multirow{4}{*}{**Human-robot interaction in**} & USA & MIT & \multirow{4}{*}{Advanced Robotics} & Fiore, S.M. \\  & & Japan & Univ. Central Florida & & \\ \cline{1-1}  & & Italy & & & \\ \cline{1-1}  & 2011.2; [35] & France & & & \\ \cline{1-1}  & & UK & Kyoto Univ. & & \\ \hline \hline \end{tabular}  
* Average publication year; article with most citations. ** ACM/IEEE HRI: ACM/IEEE International Conference on Human-Robot Interaction, IEEE ROMAN: IEEE Robot and Human Interactive Communication, IEEE TAMD: IEEE Transactions on Autonomous Mental Development, IEEE Humanoids: IEEE RAS International Conference on Humanoid Robots, IJSR: International Journal of Social Robotics, IROS: IEEE International Conference on Intelligent Robots and Systems, LNAI: Lecture Notes in Artificial Intelligence, LNCS: Lecture Notes in Computer Science.  
\end{table} 
Table 3: _Cont._The third cluster is robotics for child development. Robots are studied as entertainers or educators with emphasis on their application as a therapy tool in the context of autism spectrum disorders [43; 44]. The role of robot appearance in raising trust and comfortability in children is one of the key aspects studies [45]. Furthermore, models of learning and language acquisition are found [46]. The fourth cluster is swarm robotics. While the core of social robotics research places the robot as an interactive partner with the human, swarm robotics studies groups of robots that behave as a society. Here, we find new developments in robot-to-robot communication technologies [47] and the translation of social behaviors to robotic systems [31; 48]. New developments on collective and coordinated motion are the core of this cluster. Emotion detection is the fifth largest cluster. Algorithms for the interpretation and understanding of emotions, as well as new achievements in sensing technologies are discussed [49; 50]. Non-verbal communication is the target of this research. Assessment of robotic surgery appeared as the sixth cluster. This tangential topic studies the social impact of the introduction of robotics for surgery. New robot surgery technologies are benchmarked against traditional methods, to evaluate the benefit for the patients, as well as cost and performance [33]. Cluster 7 deals with telepresence and robots for the elderly. Articles in this group study the benefits of communicating not only through audio or video, but integrating fully expressive actions in the robots, which may be operated from a distant location. Telepresence has been found more engaging than static robotic systems [34; 51]. This research is applied in robotics care for the elderly and is aimed to smooth the communication process.