## 3 Materials and Research Methods
### Analysis of Influencing Factors and Creation of an Interactive \(QoE_{i}\) Model  
Factors affecting \(QoE\) can be defined according to [5] as: \"any characteristic of a user, system, service, application or context whose actual state or setting may have influence on the Quality of Experience of the user\". Within the framework of various studies, authors singled out different factors of influence on the overall level of \(QoE\) of a service. For example, in the paper [25], these factors are classified into four categories: human-related  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Ord.** & **Title of Paper** & **Service/ Application** & **Methods and Models Used** & **Observed Factors/Variables** & **Comparative** \\
**Number** & & **Observed** & **Models Used** & **Affecting \(QoE\)** & **Improvements Presented** \\ \hline
[23] & Developing a Quality of Experience (\(QoE\)) model for Web Applications & Web applications & Quality of experience of Web application (QoEWA) model & Objective factors (KPI); subjective factors (KQI). & (a), (b), (d), (e), (f), (g), (h), (i). (j) \\ \hline
[27] & Logistic regression based in-service assessment of mobile web browsing service quality & Searching the Web regression model & Binary logistic regression model & Average time-to-connect-TCP & (a), (b), (d), (e), (f), (g), (h), (i). (j) \\ \hline \hline \end{tabular}
\end{table}
Table 1: \(Cont.\)influencing factors, system-related influencing factors, context-related influencing factors and content-related influencing factors.  
In this paper, influencing factors were categorized as five paired components, as follows:  
1. Subjective-user influencing factors: demographic and socio-economic background, physical and mental constitution or emotional state of the user.
2. Technological-process influencing factors: transmission, encoding, storage, display and reproduction/media display, etc.
3. Contextual-relational influencing factors: any property of the situation that describes the user environment, in terms of physical (location and space, activities, state-mobility and behavior), time, social (people who are present or involved in the experience), economic (costs, type of subscription or type of brand of service/system), and technical characteristics.
4. Content-formatted and performative influencing factors, which in the case of videos are related to traffic class or streaming quality, encoding speed, resolution, duration, movement patterns, type and content structure of videos, etc.
5. Legal-regulatory influencing factors in multidimensional space on the intuitive and systemic quality of the user experience. According to technical specification [5], in this paper, an expanded number, i.e., five multi-dimensional areas in which \(QoE\) influencing factors for a specific service/application are evident, namely: application robustness area, operator/provider network resource area, network traffic context area, subjective user area and legal-regulatory area. The given categorization of space in this research is synchronized with the categorized paired factors of influence on the overall level of \(QoE\), i.e., legal-regulatory, technological-process, relational-contextual, content-performative and subjective-user.  
Based on the analyzed and observed factors affecting \(QoE_{i}\), in this step of the research modeling of their interactions was performed. Their interdependencies and correlations, as well as correlations with research variables, are shown graphically.