Chaomei Chen

• Ph.D. Computer Science
• Professor at College of Computing and Informatics, Drexel University

Highlights • Explains the growth of scientific knowledge through diverse theoretical views and examples across different levels of granularity. • Demonstrates the critical and fundamental role of uncertainty in the creation, representation, and communication of scientific knowledge. • Illustrates a solid set of visual analytic and text mining proce...

Systematic scientometric reviews, empowered by computational and visual analytic approaches, offer opportunities to improve the timeliness, accessibility, and reproducibility of studies of the literature of a field of research. On the other hand, effectively and adequately identifying the most representative body of scholarly publications as the ba...

As scientists worldwide search for answers to the overwhelmingly unknown behind the deadly pandemic, the literature concerning COVID-19 has been growing exponentially. Keeping abreast of the body of literature at such a rapidly advancing pace poses significant challenges not only to active researchers but also to society as a whole. Although numero...

The breakthrough potentials of research papers can be explained by their boundary-spanning qualities. Here, for the first time, we apply the structural variation analysis (SVA) model and its affiliated metrics to investigate the extent to which such qualities characterize a group of Nobel Prize winning papers. We find that these papers share remark...

The primary role of a cognitive map is to help us navigate in a complex environment and reach our goals. Theories such as optimal information foraging underline the principles of making decisions while we search and explore in a space of information. The fitness landscape metaphor and its variations provide a wide-ranging framework for analyzing no...

This is an invited online presentation in Chinese to Heilongjiang University’s School of Information Management on January 18, 2025. Here are the key takeaways of the presentation: The body of scientific knowledge is a complex adaptive system. This view accommodates a diverse range of theories and conceptualizations of how scientific frontiers ad...

ChatGPT is a generative artificial intelligence (AI) based chatbot developed by OpenAI and has attracted great attention since its launch in late 2022. This study aims to provide an overview of ChatGPT research through a CiteSpace-based bibliometric analysis. We collected 2465 published articles related to ChatGPT from the Web of Science. The main...

Extracellular vesicles (EVs) are a diverse population of membrane bound particles released by cells. They play roles in a variety of diseases and biological functions, piquing the interest of researchers and industry alike. The field is often described as undergoing 'explosive growth', however this growth has not been characterized in depth. Scient...

This invited lecture explores the interplay between disruptive technologies and creativity through a macrodynamic evolution framework. It highlights how disruptive innovations—such as AI, quantum computing, and 3D printing—reshape societal, economic, and ethical landscapes. Drawing parallels between artistic and technological evolution, the framewo...

Suicide is a major public health issue and research in the field is numerous, but its fragmented state has made it quite impractical to summarise the body of research through systematic reviews and meta-analyses. We propose up to date scientometric methods (Bibliometrix R-package and CiteSpace) to assess how research on suicide has evolved over the...

This is the keynote I gave at the 28th International Conference on Information Visualisation (IV24) in Coimbra, Portugal on July 24, 2024. Conference: https://iv.csites.fct.unl.pt/pt/

This e-book presents a collection of articles hand-picked by editors from publications in Frontiers in Research Metrics and Analytics between 2020 and 2024.

The Research Experiences for Undergraduates (REU) program plays a crucial role in fostering research interests among undergraduate students, motivating them to pursue advanced degrees in Science, Technology, Engineering, and Mathematics (STEM) fields, and developing a diverse, skilled workforce for STEM careers. Annually, the National Science Found...

This is the presentation I gave at the International Workshop on Philosophy of Science Meets Quantitative Studies of Science at Turin, Italy in May 27-29, 2024. Here is the link to its video recording: https://youtu.be/t-BbGhxLkH4?si=3qy1l3aOSPoYE_tf

Borderline personality disorder (BPD), a complex and severe psychiatric disorder, has become a topic of considerable interest to current researchers due to its high incidence and severity of consequences. There is a lack of a bibliometric analysis to visualize the history and developmental trends of researches in BPD. We retrieved 7919 relevant pub...

The study of financial stability is a highly expansive and significant area of academic inquiry. However, traditional literature reviews are often constrained in their scope as they tend to provide fragmented insights from a subset of the overall corpus of financial stability. In order to bridge this existing knowledge gap, the objective of this st...

We conducted a scientometric analysis to outline clinical research on posttraumatic stress disorder (PTSD). Our primary objective was to perform a broad-ranging scientometric analysis to evaluate key themes and trends over the past decades. Our secondary objective was to measure re- search network performance. We conducted a systematic search in th...

The datasets contain the following records retrieved as of Feb 2, 2014 as described in the paper Emerging Trends and New Developments in Regenerative Medicine: A Scientometric Update (2000-2014). 2000-2011: core: 4,334; expanded: 67,466 2012-2014: core: 2,629; expanded: 5,069

Previous studies diverged on whether boundary-spanning papers are cited more heavily, however , there is as yet no research that explains how boundary-spanning papers affect citation counts from a causal view and how they influence knowledge diffusion in citation network. To this end, we utilized Propensity Score Matching to clarify the relationshi...

Interest in neurostimulation interventions has significantly grown in recent decades, yet a scientometric analysis objectively mapping scientific knowledge and recent trends remains unpublished. Using relevant keywords, we conducted a search in the Web of Science Core Collection on September 23, 2022, retrieving a total of 47,681 documents with 987...

This study aims to identify trends and hot topics in breeding value to support researchers in finding new directions for future research in that area. The data of this study consist of 7072 academic studies on breeding value in the Web of Science database. Network visualizations and in-depth bibliometric analysis were performed on cited references,...

With the advent of artiffcial intelligence, the CHI community has regained a large interest in Conversational Agents (CAs). Designing CAs involves cross-disciplinary efforts, such as that of computer science (e.g., language models), psychology (e.g., cognition and emotions), linguistics (e.g., conversation design), or communication (e.g., trust, co...

The Guidance List for the repOrting of Bibliometric AnaLyses (GLOBAL) will provide minimum guidelines for the reporting of bibliometric analyses. Over the past decade, there has been a growing number of bibliometric analyses published in the peer-reviewed literature of varying quality. Despite this growth, surprisingly few published articles provid...

This paper offers an overview of the status of and emerging trends in environmental, social, and governance (ESG) research through a bibliometric approach using CiteSpace. In particular, our study aimed to elucidate the overall intellectual structure of the environmental, social, and governance academic field. To this end, we performed a topic sear...

Research on negative symptoms of schizophrenia has received renewed interest since the 1980s. A scientometric analysis that objectively maps scientific knowledge, with changes in recent trends, is currently lacking. We searched the Web of Science Core Collection (WOSCC) on December 17, 2021 using relevant keywords. R-bibliometrix and CiteSpace were...

A scientometric analysis was realized to outline clinical research on psychedelics over the last century. Web of Science Core Collection was searched up to March 18, 2022, for publications on psychedelics. Network analyses and bibliometrics were combined, to identify research themes and trends with Bibliometrix and CiteSpace. The primary aim was to...

The sheer volume of research publications on physical activity, mental health, and wellbeing is overwhelming. The aim of this study was to perform a broad-ranging scientometric analysis to evaluate key themes and trends over the past decades, informing future lines of research. We searched the Web of Science Core Collection from inception until Dec...

We performed a scientometric analysis of the scientific literature on ADHD to evaluate key themes and trends over the past decades, informing future lines of research. We conducted a systematic search in Web of Science Core Collection up to 15 November, 2021 for scientific publications on ADHD. We retrieved 28,381 publications. We identified four m...

Changes over 50 years of research on antipsychotics in schizophrenia have occurred. A scientometric synthesis of such changes over time and a measure of researchers' networks and scientific productivity is currently lacking. We searched Web of Science Core Collection from inception until November 5, 2021, using the appropriate key. Our primary obje...

This is my presentation on December 11, 2021 (3PM) as part of the Global 24 Hour Science Map Event. https://24hoursciencemap.info/

Keynote speech at ICTeSSH 2021. June 28, 2021 https://ictessh.uns.ac.rs/ https://youtu.be/RCeqOuMaJRY

How a scholar's achievement and productivity may change by the award of an academic prize is a topic of a long-term interest in research fields such as scientometrics. Numerous studies have explored the impact of receiving a Nobel Prize, a Turing Award, and other international awards on laureates' scholarly performance, but relatively less attentio...

[This corrects the article DOI: 10.3389/fpsyg.2020.01941.].

*** Published as: The boundary-spanning mechanisms of Nobel Prize winning papers August 2021 PLoS ONE 16(8):e0254744 DOI: 10.1371/journal.pone.0254744 *** The breakthrough potentials of research papers can be explained by their boundary-spanning qualities. Here, for the first time, we apply the structural variation analysis (SVA) model and its af...

As scientists worldwide search for answers to the overwhelmingly unknown behind the deadly pandemic, the literature concerning COVID-19 has been growing exponentially. Keeping abreast of the body of literature at such a rapidly advancing pace poses significant challenges not only to active researchers but also to the society as a whole. Although nu...

This presentation was a keynote speech given at the 14th International Conference on Computer Graphics, Visualization, Computer Vision and Image Processing.

This study set out to investigate intellectual domains as well as the use of measurement and validation methods in language assessment research and second language acquisition (SLA) published in English in peer-reviewed journals. Using Scopus, we created two datasets: (i) a dataset of core journals consisting of 1,561 articles published in four lan...

What is a scientific field about? What do we know about its past and present? What are the most active areas of research in the field? CiteSpace is a freely available computational tool designed to find answers to these questions through interactive visual explorations of patterns and trends conveyed by the body of scientific literature. This book...

We propose a method to measure the potential scholarly impact of researchers based on network structural variations they introduced to the underlying author co-citation network of their field. We applied the method to the information science field based on 91,978 papers published between 1979 and 2018 from the Web of Science. We divided the entire...

This presentation is part of the Lecture Series "Science of Science in the Spotlight", organized by the University of Luxemboug. Here is the playlist of the lecture series: https://t.co/0FdQpQRtI9?amp=1 The video of this presentation is here: https://www.youtube.com/watch?v=4I3LU6hUC_U&feature=youtu.be&ab_channel=MEDIACentreUnilu

This is a presentation given as part of the Stanford Seminar Series on Knowledge Graphs. The video is available on YouTube: https://www.youtube.com/watch?v=sMHs_jXFwgU&ab_channel=VinayKChaudhri

This is a book review. If you are interested in getting a copy, please make a request and I will share the private copy with you. DOI: 10.3138/jelis.2019-0026

Recommender systems are designed to help mitigate information overload users experience during online shopping. Recent work explores neural language models to learn user and item representations from user reviews and combines such representations with rating information. Most existing convolutional-based neural models take pooling immediately after...

Disagreement is essential for knowledge growth in science. However, disagreement in peer review is usually regarded as a sign of unreliability in existing studies. The predictive role of disagreement for potentially impactful discoveries was rarely explored. Reviewer expertise has been proved to have effects on review strictness and outcomes, but r...

http://arxiv.org/abs/1906.04800 DOI: 10.1371/journal.pone.0223994 Systematic scientometric reviews, empowered by scientometric and visual analytic techniques, offer opportunities to improve the timeliness, accessibility, and reproducibility of conventional systematic reviews. While increasingly accessible science mapping tools enable end users to...

This is my presentation at the Big Metadata Analytics Workshop (BMA2018) on November 14, 2018.

不断增长的科学，技术，和人文知识是人类的宝贵资产。新发现能扩展和深化现有的知识，也能淘汰原有的甚至是曾经辉煌的认识。不论是活跃在科学研究前沿的对科学家，学者，或学生，还是每个关心科学对我们的社会产生什么样的影响朋友，亲属，他们最关心的问题也许形形色色，但是都面临着一个最核心最更本的问题：我们是否了解和如何了解一个知识领域的来龙去脉，它的现状，和今后的发展前景。 传统的研究和培养模式中，研究人员需要不断地寻找相关文献来建立自己对学术领域的系统认识。比如该领域中主要研究问题是什么，哪些是奠基式的研究，哪些是里程碑式的研究，哪些是最关键的理论，方法和技巧，哪些是当前最严峻的挑战，等等等等。回答这些问题的过程是个高度抽象的过程。这个过程需要不断地分析，演绎，归纳。任何时间段里出现的文献都可能起到关...

Finding relevant publications is a common task. Typically, a researcher browses through a list of publications and traces additional relevant publications. When relevant publications are identified, the list may be expanded by the citation links of the relevant publications. The information needs of researchers may change as they go through such it...

Researchers may describe different aspects of past scientific publications in their publications and the descriptions may keep changing in the evolution of science. The diverse and changing descriptions (i.e., citation contexts) on a publication characterize the impact and contributions of the past publication. In this article, we aim to provide an...

Using Operando Characterization, Data Analytics, and Artificial Intelligence to Understand Mechanistic Links between Processing and Structure - Volume 24 Supplement - Eric A. Stach, Benji Maruyama, Chaomei Chen

This is the supplementary data file associated with the JOI paper on semantically expanded cue words of uncertainty, including the original seed words and other relevant data. The original copy is available along with the paper: 1-s2.0-S1751157717301712-mmc1 at https://doi.org/10.1016/j.joi.2017.12.004

Digital Science’s Dimensions is envisaged as a next-generation research and discovery platform for a better and more efficient access to cross-referenced scholarly publications, grants, patents, and clinical trials. As a new addition to the growing open citation resources, it offers opportunities that may benefit a wide variety of stakeholders of s...

The continuing growth of scientific publications has posed a double-challenge to researchers, to not only grasp the overall research trends in a scientific domain, but also get down to research details embedded in a collection of core papers. Existing work on science mapping provides multiple tools to visualize research trends in domain on macro-le...

Digital Science's Dimensions is envisaged as a next-generation research and discovery platform for a better and more efficient access to cross-referenced scholarly publications, grants, patents, and clinical trials. As a new addition to the growing open citation resources, it offers opportunities that may benefit a wide variety of stakeholders of s...

Digital Science's Dimensions is envisaged as a next-generation research and discovery platform for a better and more efficient access to cross-referenced scholarly publications, grants, patents, and clinical trials. As a new addition to the growing open citation resources, it offers opportunities that may benefit a wide variety of stakeholders of s...

This half-day tutorial in March 2018 introduced the fundamental concepts, principles and methods of visualizing and exploring the development of a scientific knowledge domain with CiteSpace. The tutorial has 5 sections: 1) introduction, 2) basic concepts, 3) getting started, 4) various views, and 5) advanced topics. There are 5 PDFs, available on r...

Characterizing the structure of knowledge, the evolution of research topics, and the emergence of topics has always been an important part of information science (IS). Our previous scientometric review of IS provided a snapshot of this fast-growing field up to the end of 2008. This new study aims to identify emerging trends and new developments app...

Foreword  Visualizationmayrefertotheprocessandtheartifactoftheprocessthattransformsdataintostorytell-ingevidenceorinsightfulandthought-provokingpatterns.Theprocessitselfmaydifferconsiderably intermsoftheextenttowhichthetransformationcanorshouldberepeatableandgeneralizable.The methodological tension b...

The concept of citation indexing has become deeply involved in many parts of research itself and the broad environment in which research plays an integral role, ranging from research evaluation, numerous indicators, to an increasingly wider range of scientific disciplines. In this article, we pay tribute to Eugene Garfield and present a scientometr...

Novel scientific knowledge is constantly produced by the scientific community. Understanding the level of novelty characterized by scientific literature is key for modeling scientific dynamics and analyzing the growth mechanisms of scientific knowledge. Metrics derived from bibliometrics and citation analysis were effectively used to characterize t...

Novel scientific knowledge is constantly produced by the scientific community. Understanding the level of novelty characterized by scientific literature is key for modeling scientific dynamics and analyzing the growth mechanisms of scientific knowledge. Metrics derived from bibliometrics and citation analysis were effectively used to characterize t...

This is the final version of 10.1145/3176349.3176897.

Scientific knowledge is constantly subject to a variety of changes due to new discoveries, alternative interpretations, and fresh perspectives. Understanding uncertainties associated with various stages of scientific inquiries is an integral part of scientists’ domain expertise and it serves as the core of their meta-knowledge of science. Despite t...

This is a list of uncertainty cue words that we talked about in our paper. The seed column marks the original hand-picked seed cue words of uncertainty (seed == 1, N = 61). The rest of the words are selected by word2vec models from Google news and Pubmed. Two judges reviewed the validity of these words and the agreement is in the agreed column (1 =...

This is a list of uncertainty cue words that we talked about in our paper. The seed column marks the original hand-picked seed cue words of uncertainty (seed == 1, N = 61). The rest of the words are selected by word2vec models from Google news and Pubmed. Two judges reviewed the validity of these words and the agreement is in the agreed column (1 =...

This is the expanded and merged dataset B used in the following review. Chen, C. (2017) Eugene Garfield’s scholarly impact: a scientometric review. Scientometrics. https://doi.org/10.1007/s11192-017-2594-5

We introduce the structures and features of several widely known and inspirational resources for representing concepts and semantic relations in biomedical knowledge, namely MeSH, ULMS, SemRep, and Semantic MEDLINE. Many examples in subsequent chapters make use of these resources.

The ability to measure scholarly impact, ranging from individual scientists to an institution of researchers, is crucial to both research assessment and the advance of science itself. In this chapter, we summarize an array of fundamental and widely used concepts and computational methods for measuring scholarly impact as well as identifying more ge...

This chapter introduces computational techniques that enable us to extract concepts, relations, and other patterns from text documents, and from scientific publications in particular. After targets of interest have been extracted and annotated, text mining techniques can be applied to identify higher-order patterns and trends that may not be obviou...

We introduce the design and applications of a few influential science mapping tools, namely CiteSpace, VOSviewer, and CitNetExplorer, such that one can utilize these freely available tools to study a scientific domain of interest. CiteSpace provides a variety of metrics and indicators concerning trends and patterns in scientific literature. Many of...

Macroscopic theories of scientific change are holistic views of what drives the creation and acceptance of scientific knowledge. At the grand scale of scientific communities, such theories offer a conceptual framework for analyzing the development of a scientific discipline through philosophical, sociological, and problem solving perspectives. As m...

Literature-Based Discovery (LBD) refers to a range of approaches that take a body of scientific literature as the input, apply a series of computational, manual, or a hybrid processes, and finally generate hypotheses that are potentially novel and meaningful for further investigations. This chapter introduces the origin of LBD, its major landmark s...

A conceptualization of research on uncertainties in scientific knowledge is presented. Several common sources of uncertainties in scientific literature are characterized, notably, retracted scientific publications, hedging, and conflicting findings. Semantically equivalent uncertainty cue words and their connections with semantic predications are i...

We demonstrate a series of studies of semantic predications from Semantic MEDLINE, including the detection of semantic predications with burstness and in association with conflict, contradictory, or other sources of uncertainties of scientific knowledge. Semantic networks of predications are analyzed within the framework of structural variations. E...

Accessing the state of the art of scientific knowledge timely and precisely remains a profound challenge. The vast majority of scientific articles are transient in nature. They may never receive attention from the scientific community or other relevant stakeholders. Advances of science must deal with controversial, conflicting, incomplete, and disc...

Citing articles of each co-citation cluster, containing the top 50% of the citing articles by coverage.

References cited by the Science Mapping dataset, including cluster memberships.

The file is a 7z of HTML, containing details of clusters, e.g. labels as well as cluster size and silhouette scores.