This section outlines the research results and provides a discussion of the bibliometric analysis, offering a detailed overview of the quantitative scientific output in the field of robotics as it pertains to the tourism and hospitality sectors (Jain et al. 2024).
2.1. Overview of bibliometric information
The bibliometric analysis identified 110 articles sourced from Scopus, authored by 347 different individuals and published across 67 journals. The majority of these publications are classified as “journal articles” (79.09%), with “conference papers” comprising the remaining 20.91% (Fig. 2a). Most articles were written in English (108 records, 98.18%), while 2 were published in Japanese (1.82%). The types of papers that were excluded are depicted in Fig. 2b.
The findings indicate a substantial increase in robotics research within the tourism sector over the past decade. Approximately 59.83% of the total articles were published in the last three years, with yearly publications exceeding 20 (Fig. 3a). The peak publication year was 2023, accounting for 37% of the total. A similar upward trend is seen in the “number of authors” indicator (Fig. 3b), with the highest number of authors recorded in 2023 (16.36%).
2.2. Geographic distribution of publications
The research on robotics applications in the tourism and hospitality industry (Mukherjee et al. 2023; Ivanov et al. 2019) originated from 40 countries. These included 18 from Asia, 15 from Europe, 3 from Africa, 2 from North America, 1 from South America, and 1 from Oceania. Fig. 4 illustrates the global distribution of the articles analyzed in this study. Asia emerges as the leading continent, contributing 45.00% of the total publications, followed by Europe (37.50%), Africa (7.50%), North America (5.00%), South America (2.50%), and Oceania (2.50%). Out of the countries studied, 33 (82.50%) produced between 1 and 5 publications, while 6 countries (15.00%) published between 6 and 20 articles, and only 1 country (2.50%) generated more than 20 publications. Notably, China contributed approximately 32.73% (n=36) of the included studies, followed by the United Kingdom at 14.55% (n=16) and the United States at 13.64% (n=15). Among those countries with 6 to 20 publications, the United Kingdom (16 publications) and the United States (15 publications) were the most prolific.
Table 1 Top 12 contributing countries that published more than 3 papers.
The analysis reveals that China makes the most significant contributions to the field. Table 1 lists the top 12 countries based on their contributions, detailing both the number of publications and citations. It is important to note that the total citation counts reflect data retrieved from the Scopus database on March 28, 2024. To provide a clearer picture of the most active countries, Fig. 5 illustrates the "cooperation network" indicator.
This analysis was conducted using VOSviewer software, with a minimum publication threshold of 4 documents per country, resulting in 12 countries that met this criterion. In Fig. 5, the size of the circles represents the volume of publications for each country, while the connecting lines indicate collaborative efforts with other nations. The analysis identifies five main clusters: the first includes China and Australia (blue), the second comprises the United Kingdom, Spain, and Italy (green), the third encompasses the United States and Turkey (purple), the fourth features India, France, and Malaysia (red), and the fifth cluster includes Hong Kong and South Korea (yellow).
China, United Kingdom and United States are the most influential countries with a total link strength (TLS) of 9 for each country, followed by India and Australia. As predicted, the Fig. exemplifies an evolution towards an increased number of papers written with the contribution of several authors.
2.3. Affiliation-based distribution of publications
The analysis identified a total of 196 research institutions associated with the publications. Among these, 154 institutions (78.57%) contributed only one article, while 39 institutions (19.90%) published two or three studies, and 3 institutions (1.53%) published more than three papers.
The University of Surrey in Guildford emerged as the most prolific academic institution, with six publications. It was followed by Sun Yat-Sen University in Guangzhou, which produced five publications, and Sakarya Universitesi in Sakarya, with four publications. Collectively, the top 12 institutions (Table 2) contributed 42 papers, representing 38.18% of the total articles published.
Although most institutions involved in research on robotic technologies applied to tourism are universities, the landscape also includes private and governmental organizations, research centers, and various institutes (Ospina-Mateus et al. 2019).
Table 2 Top 12 most productive institutes according to the number of publications and number of citations
2.4. Authors and their cooperation
As previously noted, the 110 publications involved a total of 347 authors. The number of authors per study varied from 1 to 8, with an average of 3.15 authors per article. Table 3 provides a summary of the publications categorized by the number of authors and the citations each group received. Most articles were authored by 2, 3, or 4 individuals, with the highest citation counts associated with works authored by 3 and 4 authors. Notably, 94.24% (n=327) of the authors published only a single article, while 4.32% (n=15) authored 2 articles, and 1.44% (n=5) published 3 studies.
Table 3 Distribution of publications based on the number of authors
Table 4 Most-productive authors according to the number of citations
Table 4 shows the first 10 of the most prolific authors, considering the number of citations. This table provides information on the selected papers, including author affiliations, countries, the number of publications, citations, and the Scopus h-index. Within this context, Dogan Gursoy (n=394), Daniel Belanche (n=160), and Stanislav Ivanov (n=118) are the top three authors. Based on their Scopus h-index, Dogan Gursoy, with 2 publications, leads the ranking with an h-index of 67. His most cited paper is (Lu et al. 2019), which has received 390 citations. Following him, Daniel Belanche, also with 2 articles, has his most cited work (Belanche et al. 2021) attracting 119 citations. Stanislav Ivanov ranks third, with 2 publications as well, the most cited being (Ivanov et al. 2020a), which has garnered 102 citations in Scopus.
Fig. 6 details the model relative to the cooperation of the authors. The co-authorship analysis conducted using VOSviewer reveals a network of the 10 authors who have published at least one paper. This analysis identifies three distinct clusters, each represented in different colors. Huang Dan emerges as the most prominent author, with a Total Link Strength (TLS) of 3. It can be mentioned that there is collaboration between authors from the same institution or organization belonging to China.
2.5. Document citation
Table 5 presents data for the most cited articles, including their titles, publication sources, total citations as of 2023, and "Field-Weighted Citation Impact (FWCI)" (Cantú-Ortiz 2017). The FWCI is a metric that reflects the average citation impact of a document, indicating how often it is cited in comparison to similar works (Purkayastha, et al. 2019). It is calculated using the following formula:
where ci represents “the number of citations received by publication i and ei denotes the expected number of citations per publication received by similar publications” (Postelnicu and Boboc 2024, p.7).
Table 5 Top 10 highly cited papers
Among the ten highest-impact articles, three were published in "Tourism Management" while one article each appeared in the following journals: "International Journal of Hospitality Management", "Tourism Geographies, Computers in Human Behavior", "International Journal of Contemporary Hospitality Management", "Annals of Tourism Research", "Electronic Markets, and Information Technology and Tourism".
The article “by Lu et al. (2019) received” (Husain et al. 2023) the highest total citation count, with 390 citations, and also ranks first in terms of average citations per year, averaging 78 citations. The publications listed in the table were released between 2017 and 2021.
Table 6 Top 10 most active publications (journals and conference proceedings).
“A ranking of the top 10 most cited publications, encompassing both journals and conference proceedings, has been compiled (Table 6) to illustrate the influence of these works due to their significant scientific impact. This table includes details such as the source name, ISSN, publisher, number of articles related to the selected topic, percentage of the total articles, total citations received by those articles, journal impact factor, quartile ranking, and CiteScore according to Scimago Journal Ranking” (JCR 2022) (Postelnicu and Boboc 2024, p.10).
The "International Journal of Hospitality Management" led with the highest number of publications in the designated timeframe, contributing 9 articles (8.18%). Following it, the "International Journal of Contemporary Hospitality Management" ranked second with 7 publications (6.36%), trailed closely by "Tourism Management" ("International Journal of Tourism Management") in terms of the number of papers.
In total, 110 articles were published across 67 sources. Among these, 10 sources (14.93%) published more than 2 papers, while 57 sources (85.07%) contributed 1 or 2 articles. Fig. 7 illustrates the annual publication count for the ten most active sources, including both journals and conference proceedings.
2.6. Subject area publications
The 10 most significant subject areas from the Scopus database, according to their distribution by domains, are presented in Table 8. The analysis revealed that "the Business Management Accounting field made the largest contribution to research" (Olowoselu and ElSayary 2024) on robotics in tourism and hospitality, followed by Computer Science and Social Sciences. It is important to note that some publications span multiple subject areas, resulting in a total publication count that exceeds the 110 selected documents.
Table 8 The top 10 subject areas
Fig. 8 illustrates the keywords co-occurrence network, generated through the full counting method. Among the 361 keywords analyzed, 10 met the criteria of appearing at least twice, resulting in a keyword network categorized into 6 distinct clusters. These clusters highlight themes with numerous interconnected elements. “The size of each circle corresponds to the frequency of the keywords used: the more frequently a keyword appears, the larger the circle” (Agyei et al. 2024, p.10). Additionally, “a smaller distance between keywords indicates a stronger relationship”, based on how often the terms co-occur (Lehner et al. 2023). The diagram reveals that "service robots," "artificial intelligence," and "human-robot interaction" are among the most frequently used terms. Specifically, "service robots" appears 47 times with a Total Link Strength (TLS) of 59; "artificial intelligence" occurs 22 times, resulting in a TLS of 50; and "human-robot interaction" has 15 occurrences with a TLS of 29. Other notable terms include "COVID-19" and "robot," both with 9 occurrences (TLS of 20 and 12, respectively), as well as "robotics," which appears 7 times and has a TLS of 17. The yellow cluster is associated with service robots and anthropomorphism, encompassing themes like technology acceptance and social presence. The green cluster focuses on artificial intelligence, robots, and service automation. Terms related to human-robot interaction, social robots, and trust are found in the red cluster. The turquoise cluster addresses aspects related to COVID-19 and safety, while the purple cluster includes topics related to robotics, automation, and big data. Lastly, the orange cluster pertains to hospitality and tourism, and the blue cluster features terms linked to hotel service automation and autonomous robots.
Fig. 9 shows trends of the top 12 keywords from January 1, 2014, to December 31, 2023. In addition to the established term ("service robots"), there are growing trends for topics related to "human-robot interaction" with the most occurrences. It can also be seen that keywords such as "artificial intelligence", "COVID-19" and "robotics" start to be used later (from 2020) in tourism research, which experiences a staggering collapse in 2020.
After clustering the author's keywords, it is possible to highlight the most prominent research areas currently using robotic technologies in tourism and hospitality. These emerging technologies are used in many areas of tourism: airports, travel agencies, flight booking, hotel booking, airport security, hotel robots, robot porters, cleaning, food preparation and guests greeting are all areas where robots can be used. Robots are very efficient because they reduce working time and ensure that the work is done correctly. Robots reduce the workload as less manpower is required to do the work.
The bibliometric analysis revealed a significant gap in systematic reviews within the scientific literature regarding the use of robotics in tourism and hospitality (Mukherjee et al. 2023). As such, this paper may serve as a valuable foundation for conducting a systematic literature review.
Looking forward, it is clear that the incorporation of robotics into the tourism and hospitality (Ndhlovu et al. 2024) industry holds considerable promise, albeit accompanied by certain challenges. To lay the groundwork for future research, a detailed investigation plan will be developed, concentrating on key issues identified through a thorough keyword analysis. Below is a brief overview of the research agenda, designed to aid both scholars and practitioners in comprehending the evolving "relationship between robotics and the tourism and hospitality sector", which is increasingly influenced by technological advancements (Jerez-Jerez and Foroudi 2024). Robotics is affecting this industry in various ways:
1. Enhanced guest experience:
· Robotic concierge: Robots can act as concierge assistants in hotels, providing guests with information about the hotel, local attractions, and even making reservations. These robots can make personalised recommendations based on guest preferences.
· Room service robots: Robots can deliver room service items like food, beverages, and amenities directly to guests' rooms, ensuring a fast and efficient service experience.
2. Operational efficiency:
· Automated check-in/check-out: Self-service kiosks and robotic systems can streamline check-in and check-out processes, decreasing wait times and allowing "staff to concentrate on providing more personalized guest interactions" (Saranya et al. 2025).
· Cleaning robots: Hotels are increasingly using robotic vacuums and floor cleaners to maintain cleanliness and hygiene efficiently, especially in high-traffic areas.
3. Cost reduction:
· Labour cost savings: Although the initial investment in robotics may be substantial, these technologies can lead to significant long-term savings on labor by automating repetitive and time-consuming tasks. This shift enables human employees to focus on roles that require personal engagement.
· Inventory management: Robots can help manage inventory and supplies, ensuring that stock levels are maintained efficiently and reducing waste.
4. Personalised services:
· Data collection and analysis: AI-powered robots can analyse guest data to provide tailored recommendations and services. For example, a robot could suggest local dining options based on previous guest reviews and preferences.
· Language translation: Robots can offer real-time language translation, facilitating communication for international guests and improving their overall experience within the hotel or tourism environment.
5. Attraction and entertainment:
· Interactive exhibits: In tourist attractions and museums, robots can serve as interactive guides, providing educational and engaging experiences. They can provide information, answer questions, and even entertain guests.
· Themed experiences: Robots can be integrated into themed entertainment experiences, such as robot-themed shows or events, adding a futuristic element to attractions.
6. Safety and hygiene:
· Sanitation robots: Particularly relevant to health and safety, robots can be used to disinfect and sanitise public spaces, helping to ensure a clean and safe environment for guests.
7. Accessibility:
· Assistive robots: Robots can help guests with disabilities by assisting with navigation, carrying luggage, or providing information, thus improving the accessibility of tourism and hospitality services (Sharma, 2024).
Overall, robotics has the potential to transform the tourism and hospitality sectors by enhancing operational efficiency, improving guest experiences, and introducing innovative services. Nevertheless, it is vital for businesses to strike a balance between automation and personal interaction, as these human connections remain essential to the guest experience.
Interdisciplinary collaboration among computer scientists, psychologists, ethicists, and engineers will be crucial for advancing these research initiatives. Additionally, establishing “a robust ethical framework throughout the research and development processes will be essential to ensure the responsible application of robotic technologies within the travel, tourism, and hospitality industries” (Ivanov et al. 2020a; Herawan et al, 2023).