Understanding the Learning and Innovation Model of Exhibition Visitors

Research on visitors tends to focus on the behavior of the audience before and after the exhibition, while there is little research on the behavior of audiences in the exhibition. The learning and innovative behavior of visitors at the exhibition also reflects one of the basic functions of the exhibition: communicating and Disseminating information. This paper based on the domestic and international research literature on the knowledge diffusion of exhibitions and uses SEM to the established model of the visitors’ learning and innovative behavior in exhibition. The validity of the path in the model is tested by taking Shenzhen Machinery Exhibition as a case. The results show that visitors have different learning behaviors for suppliers and other visitors, resulting in different learning and innovation effects. In addition, their positions, frequency of visiting exhibitions and forms of their visits also have an impact on their learning behaviors.

"the interaction between exhibits and participants" and "the interaction among participants". With regard to face-to-face communication, Rogers (2016), an American scholar, put forward the innovation diffusion theory of persuading people to accept new ideas, new things and new products through media in 1983. Base on this theory, he divided the innovation diffusion process from the source to receivers into five stages: cognition, persuasion, decision-making, implementation and confirmation. Rogers divided communication channels into interpersonal channels and mass communication channels represented by newspapers, television and the Internet. Interpersonal channels can be understood as word-of-mouth publicity. In the cognitive stage, mass communication channels enabled more people to find the innovation. However, people also needed to be persuaded through interpersonal channels in order to accept this innovation. Storper and Venables (2004) believed that face-to-face communication conveyed more complex information than words, pictures, etc., and enabled communicators to get rapid feedback. Polanyi (1967) stated that the diffusion of explicit knowledge was mainly through the mass media, and the diffusion of implicit knowledge must be through face-to-face communication. Nonaka, Toyama, and Konno (2000) found that the creation and transformation of knowledge was a dynamic process among four modes of knowledge transformation: imperceptible influence (socialization), external explicitness (externalization), aggregate integration (integration) and internal sublimation (internalization).
Exhibition participants can obtain important information not only through direct face-to-face communication, but also through indirect observation. Bandura, one of the American psychologists, put forward the social learning theory, and found that most of people's behavior was learned by observing the surrounding environment and the behavior of others (Albert, 2014). Borghini, Golfetto, and Rinallo (2006) found that exhibitors skimmed other booths during the exhibition and carefully observed the behavior of other exhibitors, such as interaction with visitors, marketing mode, etc. Through observation and study, exhibitors quickly learned the market strategies of their competitors and provided reference for their own development strategies. Luo & Zhong (2016) analyzed the network structure of exhibition knowledge diffusion with the method of social network analysis. The results showed that the exhibition knowledge diffusion was flat, coherent, efficient and uneven. In the exhibition, there was more knowledge diffusion of market promotion strategies, and more attention was gathered to enterprises with strong research and development capabilities. Through participants' post-exhibition application of new knowledge, the technological innovation was promoted at last.
On the basis of summarizing previous studies, Zhu and Zeng (2017) divided the interactive learning process of exhibitors into three levels (object-action-effect), and found that the effects of the action layer differ with different objects such as customers, partners and competitors.

Influential Factors of Exhibition Knowledge Diffusion Based on
Knowledge Transfer Theory There were many influential factors of effects of knowledge diffusion. Among them, the relatively comprehensive influential factors were concluded in the model of knowledge transfer analysis framework proposed by Albino and the four-element model of knowledge transfer proposed by Cummlngs & Teng. The four elements included knowledge providers and knowledge receivers (the two subjects); transferred knowledge (the object); and the transferred media/channels and situations. Iris made a special research on the element of transfer situations, regarded the forum as a cross-organizational community of practice, and divided the situations of knowledge sharing into formal occasion and informal Y. N. Zhou et al. occasion. Also, the process of knowledge sharing in these two situations and the impact of information technology usage on knowledge sharing in international conferences were studied respectively. Li (2018) constructed the structural equation model based on the four-element model and explored the influential factors of the exhibition knowledge transfer effect through questionnaire survey and data analysis. The results showed that there were three major influential factors: knowledge attribute, transfer ability and transfer situation. Reychav (2009) found that exhibition knowledge sharing had an impact on knowledge acquisition through three intermediary variables: joint action, exhibitors' recognition and visitors' recognition, and exhibitors and visitors were in different approaches of exhibitions.
In a word, the influential factors of exhibition knowledge diffusion can be divided into two types in previous studies. One was the attribute of knowledge itself, and the other was the attribute of relationship network formed in the process of people's interaction, such as relationship strength, relationship quality, characteristics of relationship network structure.

Research Object
The research object in this study is the visitors of Shenzhen International Indus- Shenzhen International Industrial Manufacturing Technology Exhibition, which has been held for 20 years, is an exhibition with the largest scale, the highest technological contents, the widest categories and the best demonstration effect in the field of manufacturing equipment in South China. The data can be collected conveniently because of its long duration and high flow of participants. In addition, the macro information of this exhibition can be obtained from the detailed post-exhibition reports on the official website of Shenzhen International Industrial Manufacturing Technology Exhibition. So, the research location has been determined at this exhibition.

Research Methods
Based on innovation diffusion theory and social learning theory, the data was collected through questionnaire survey, and structural equation model was used to test and analyze each specific path of the constructed model.

Design of Structural Equation Model
With the references of the exhibitors' path model of learning and innovation Y. N. Zhou et al.
process proposed by Zhu & Zeng (2017) and the information search behavior model of exhibition visitors proposed by Borghini et al. (2006), the path model of exhibition visitors' learning and innovation has been designed ( Figure 1). Bollen (1989) stated that the scale should be as larger as needed, and the 7-point Likert scale should be widely used in the structural equation model. In each potential facet, there should be at least 3 items, of which 5 -7 items are preferable. According to the above study, 7-point Likert scale has been used in this study, and the observed variables of the latent variables were extracted from the qualitative research conclusions of Borghini et al. (2006). In this study, there were 21 quantified scale items and 7 items of demographic information, a total of 28 items in the questionnaire (Table 1).

Pre-Survey and Formal Questionnaire
In pre-survey, 74 questionnaires were collected by e-mails, of 74 valid.
The Cronbach's α coefficient was used to test the reliability of the internal consistency of the scale. In this study, the Cronbach's α coefficient is 0.917, greater than 0.9. The reliability coefficient values of the deleted items have not been significantly improved, and the CITC values of all items are greater than 0.4. The above data shows that the collected data is in high reliability, each item should be retained, and there exists a good correlation among the analysis items.
The data with high reliability can be used for further analysis.
Exploratory factor analysis and confirmatory factor analysis were used to test the construct validity of the scale. The KMO value is 0.796, greater than 0.7, and the P-value is less than 0.05, indicating that the questionnaire data has good structural validity and can be used for structural equation model analysis.

Descriptive Statistics
The formal questionnaires were distributed by sending e-mails to the visitors of Shenzhen International Industrial Manufacturing Technology Exhibition and handing out questionnaires in the Intelligent Manufacturing Forum, and a total of 335 questionnaires were collected, of 324 valid. The descriptive statistical characteristics are as follows (Table 2): 1) the vast majority of visitors have more than 2 times of exhibition experience with 2 -5 times a year, with a percentage of 69.1%, indicating that most visitors selectively participate in exhibitions with the needs of their enterprises.
2) most visitors are service providers (34%) and distributors/agents (24.1%), and a small number of them are manufacturers (18.8%). It indicates that most visitors are downstream customers or partners of exhibitors.

Reliability and Validity Testing
The Cronbach's α coefficient was used to test the reliability of the internal consistency of the formal scale. The Cronbach's α coefficient is 0.973, greater than 0.9, and the formal questionnaire data is in a good reliability. The KMO value is 0.942, greater than 0.7, and the P-value is less than 0.05, indicating that the formal questionnaire data has good structural validity and can be used for structural equation model analysis.

Difference Analysis
One-way ANOVA was used to analyze the difference. The mean values of the observed variables of each latent variable were calculated, and the difference analysis was carried out by taking the mean values as of latent variables.

The Impacts of Positions on Both Learning Styles and Effects
The results of one-way ANOVA of positions on learning styles and effects show that the p-value of "visitors in different positions" to "direct conversations" is 0.05, less than 0.1, indicating that there exists significant difference in the learn- and they prefer to learn through direct conversations.

The Impacts of Types of Enterprises on Both Learning Styles and Effects
One-way ANOVA results (Table 4) of types of enterprises on learning styles and effects show that: p values of learning styles and effects are both greater than 0.1, indicating that there is no significant difference in learning styles and effects among visitors of different types of enterprises.

The Impacts of Visiting Forms on Both Learning Styles and Effects
Visiting forms can be divided into "visiting alone" and "visiting in groups". The results (Table 5) show that Sig. (bilateral) of "learning from suppliers", "observation", and "acquiring technological and market knowledge" are all less than 0.1, indicating that there exists significant difference of the above three factors between "visiting alone" and "visiting in groups". By comparison of their mean values, the results show that visitors visiting in groups learn more from suppliers, have more observation and learning behavior and acquire more technological and market knowledge than those visiting alone.

Fitting and Debugging of Structural Equation Model
Based on the structural equation model design mentioned above, 324 samples were calculated and analyzed in the model. The results show that the chi-square value (χ 2 ) of the initial model is 376.661, the degree of freedom (df) is 199, and the ratio of chi-square value to degree of freedom (χ 2 /df) is 1.893. The initial model is in a medium fitting degree, and needs to be further debugged and optimized.
In order to optimize the initial model, the correction index of MI is analyzed, and the paths of residual errors of "e3 -e4", "e5 -e6" and "e17 -e19" are added.
Combined with the path coefficients and the actual situation of the exhibition, Y. N. Zhou et al.
the path of "visitors to direct conversation" is deleted. After the above operation, all path coefficients are positive and significant. The modified conceptual model paths are obtained in Table 6.
In the modified model, the Chi-square value (χ 2 ) is 356.101, the degree of freedom (df) is 198, and the ratio of chi-square value to degree of freedom (χ 2 /df) is 1.798. The fitting degree is higher than that of the initial model (in Table 7). The results of the specific coefficients and test values of the modified model can be seen in Table 7, in which each path coefficient is positive and the significance of each coefficient is less than or equal to the standard of 0.05. At last, the initial model has been debugged and the final model paths have been obtained.

Empirical Results Analysis
The calculation results of the coefficients and test values of the main model paths after debugging show that between the object level and the action level, the paths from upstream suppliers to both direct conversations and observation are significantly positive, while the path from other visitors to only observation is significantly positive. It shows that visitors talk more with suppliers in the exhibition, while other visitors learn more by observing others' behavior. By comparing path coefficients, the results show that visitors are more likely to talk to suppliers rather than observation, with the path coefficient of 0.75. It indicates that visitors are more likely to communicate with upstream suppliers through direct conversations in the exhibition, while other visitors are more likely to observe suppliers' behavior. Between the action level and the effect level, two learning styles' paths from direct conversations and observation to the learning effects of new technology and market trends are significantly positive. By comparing the path coefficients, the results show that the path coefficients from observation to two variables of effect level are both greater than 0.4, while the path coefficient from direct conversations to only technology effect is greater than 0.4. From the above results, visitors acquire more exhibition knowledge with observation rather than direct conversations. According to the interview results, there are too many suppliers and limited visiting time. So, visitors observe most of the booths and choose to talk to their interested suppliers for a short time, which can be the reason of the learning effect of observation being more obvious than that of direct conversations. According to the results of empirical analysis, the modified model of the learning and innovation process of exhibition visitors is constructed (can be seen in Figure 2).

The Learning Styles of Exhibition Visitors Depend on the Objects
Visitors adopt different learning styles with different participants in the exhibition. They can talk directly with exhibitors while observing the exhibits because of the fixed booths. As for other visitors with great mobility and strangeness, there are fewer conversations among visitors. Most visitors gain knowledge by indirectly observing the behavior of others, such as observing their tendency and listening in on their conversations.

Positions Have an Impact on Learning Styles of Visitors
Visitors in different positions of enterprises adopt slightly different learning styles. Middle and senior managers and technicians are more likely to talk directly to acquire knowledge than buyers, because they have more topics to talk to others than buyers. Also, middle and senior managers generally have a deep concern and understanding of market trends, while technicians have a higher understanding of industry's technology, so they can better talk about technological knowledge and market trends with other participants.

The Visiting Forms Have Impacts on Both Learning Behavior and Effects
The visiting forms of the visitors have impacts on both their learning behavior and effects. Visitors visiting in groups are more likely to communicate with other exhibition participants and get better learning effects than those visiting alone.

Observation Is More Commonly Used by Visitors to Acquire
Knowledge The results show that visitors acquire more knowledge with observation rather than direct conversations in the exhibition, which is mainly due to the limited visiting time, many tasks, and many objects to visit and learn. Visitors spend more time on communications which are more valuable and meaningful to them, and select the exhibition projects. They don't have in-depth communication on all exhibition projects.

The Contents of Acquired Knowledge Have an Impact on Learning
Styles Exhibition visitors acquire technological or market knowledge mainly through direct or indirect observation and conversations to promote their innovation.
The results of this study show that the main ways of acquiring technological and market knowledge are observing, summarizing and comparing the exhibits on the spot and observing the interaction among other participants, while "direct conversations" are widely used to acquire technological knowledge.

The Exhibition Focuses on Business Communications
The results of samples survey show that they have relatively low evaluation on the effects of learning and innovation. It shows that the information, knowledge and technology acquired by participants have no obvious promotion for their knowledge and innovation, presenting the current characteristics of the exhibition. As one of the technological exhibitions in China, Shenzhen International Industrial Manufacturing Technology Exhibition has such little promotion on visitors' learning effects, not to mention other exhibitions.

For Exhibition Facilities: Set up Sufficient Negotiation Areas to
Promote Communications Some visitors talk more directly with suppliers in the exhibition, while other visitors take more indirect observation. For the organizers, more negotiation areas should be set up in the exhibition to provide convenience for conversations between visitors and suppliers, such as setting up special negotiation areas and increasing the width of the aisles.

For Exhibitors: Make All Kinds of Preparations in Advance
Exhibitors should make adequate preparations during the preparation for the exhibition. The preparation contents not only include exhibits and publicity materials, but also include the systematically training of exhibitors, so that they can better express the technological innovation of the enterprise and products' advantages in the market when talking to visitors. Also, the research conclusions show that middle and senior managers and technicians are more likely to talk directly, and visitors visiting in groups interact more with other participants than visitors visiting alone. Therefore, when inviting visitors, organizers and exhibitors should focus on potential visitors of middle and senior managers and technicians and invite more visitors visiting in groups.

Improve the Display Ability and Effects of the Exhibition
By observation, visitors can achieve better learning effects than those by direct conversations, which means that the organizers and exhibitors need to constantly improve the display form, integrate the emerging display technology, and provide better display effects for visitors.

The Samples Are Highly Targeted
The paths of learning and innovation of exhibition visitors are studied by the methods of literature review, questionnaire survey and structural equation model, which is of theoretical and practical significance. However, the formal questionnaires were distributed through sending questionnaires in the machinery industry discussion group, sending questionnaires by e-mails and inviting visitors familiar to the researcher, which leads to the lack of randomness of samples and lack of representativeness of the visitors in industries. In this study, there is less discussion of visitors in other industries. Taking into account the relevance of the industries and the industrial chains, the collected data with not enough randomness also includes the information of visitors in other industries.

Trade Platform and Technology Communication: A Game between
Reality and Hope Samples have relatively low evaluation on the effects of learning and innovation after the exhibition, which fully reflects the essence and reality of the trade platform of the exhibition. However, many visitors participate in the exhibition with the purpose of learning new knowledge and new technology. Thus, the difference between their purpose and the actual function and effects of the exhibition occurs, which leads to two problems worthy of further research in the future.
First, whether exhibitions need to strengthen or open up special mechanisms for promoting knowledge communication or not. Second, the knowledge promotion and technological innovation shown in this study are not enough, but further study should be conducted to find out that whether this is really the case in the reality after the exhibition.

Further Evaluation of the Contents and Effects of Knowledge
Promotion The highly targeted samples lead to the understanding limitation of other indus-tries or specialties to a certain extent. The visitors' evaluation of exhibition knowledge promotion and technological innovation vary with the following factors: the levels and contents of knowledge learned or promoted in the exhibition, their positions and their types of enterprises. Moreover, the visitors in this study would like to learn more about the relevant core technology and knowledge in the exhibition, so that they can improve themselves rapidly in future application, and this is hard to realize. Further studies should be conducted to find out whether the acquired knowledge which doesn't make much sense at that time plays an important role in their future work. Therefore, the extended new topic of "the application of the knowledge learned in the exhibition" can be further studied, which is also the suggestion of many respondents in this study.

Research Significance and Main Contributions
Through questionnaire survey and model fitting, this paper studies the different learning methods adopted by the audience in the face of different communicators in the exhibition and the differences of learning and innovation effects brought by different learning methods. In theory, it complements the theoretical research on the learning methods and effects of audience in the exhibition. In practice, it can help the organizers better design the exhibition and promote the effect of knowledge exchange through the exhibition.

Conflicts of Interest
The authors declare no conflicts of interest regarding the publication of this paper.