# A Hybrid MCDM Model for Live-Streamer Selection via the Fuzzy Delphi Method, AHP, and TOPSIS
## 5 Conclusions
The company selected the first two live-streamers based on the conclusions of this study. Additionally, the comparative analysis for the ranking results of AHP was also demonstrated in this study. The result showed that the effectiveness of this study is confirmed. The research contributions are summarized as below:  
1. Concerning the research topic, the selection of live-streamers is very important to shopping website operators. However, a review of previous studies has shown that this topic has not been explored in any literature. Furthermore, concerning methodology, this study proposes a hybrid MCDM model comprising the fuzzy Delphi method, AHP, and TOPSIS to enhance the decision-making quality and speed up the decision-making process. This model assists the managers of shopping websites to select the best live-streamer, thus making practical contributions and improvements on methodological deficiencies in previous studies. 2. The selection criteria for live-streamers are screened using the fuzzy Delphi method to establish a valid hierarchical framework. 3. To address the issue of excessive pairwise comparison matrices and thus reduce the difficulty in filling out the questionnaire among the decision-makers, the integrated weights of the selection criteria compiled using AHP are incorporated into TOPSIS. This assists in selecting the best live-streamer and increases the efficiency of decision-making. Other languages were not included in this study as the questionnaire is mainly designed in traditional Chinese. Therefore, the results of this study do not involve cultures in other countries. This represents one of the limitations of this study. Additionally, due to time and cost constraints, this study adopted a cross-sectional approach that involved collecting data at only one point in time. The sensitivity analysis was also lacking in this paper. Finally, the suggestions for future research are:  
1. In the fuzzy Delphi method section, opinions from more managers can be collected in the decision-making process to reduce errors. 2. When selecting live-streamers for the shopping websites, this study considers 15 important selection criteria. Future studies can take into account more related criteria to establish a complete selection model. 3. As some selection criteria are qualitative, it is not easy to express them with precise data. Additionally, scores are given to criteria or alternatives by managers based on subjective judgment. Therefore, this study recommends incorporating the concept of the fuzzy theory into AHP and TOPSIS in the future. Future researchers can investigate this topic using other MCDM methods. For instance, AHP assumes that elements at each level in a hierarchical framework are independent of each other. This study recommends adopting analytic network process (ANP) that deals with influences among elements. Conceptualization, K.-L.C. and Y.R.L. ; methodology, K.-L.C. and Y.R.L. ; software, K.-L.C. ; validation, Y.R.L., A.S.A., M.A. and K.-L.C. ; formal analysis, K.-L.C. ; investigation, K.-L.C. and Y.R.L. ; resources, Y.R.L., A.S.A. and M.A. ; data curation, K.-L.C. and Y.R.L. ; writing--original draft preparation, K.-L.C. ; writing--review and editing, Y.R.L., A.S.A., M.A. and K.-L.C. ; visualization, K.-L.C. ; supervision, A.S.A. and M.A. ; project administration, Y.R.L., A.S.A., M.A. and K.-L.C. ; funding acquisition, Y.R.L., A.S.A. and M.A. All authors have read and agreed to the published version of the manuscript. This research received no external funding. Not applicable. The authors declare no conflict of interest.