Autor: Janowski, Lucjan - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Long-term video QoE assessment studies : a systematic review
Autorzy:: Cieplińska, Natalia
Wierzchoń, Michał
Janowski, Lucjan
De Moor, Katrien
Opis:: Although longitudinal studies are common in other disciplines, such as psychology, medicine, or User Experience, they are rarely used in Quality of Experience (QoE). However, observing users over time can provide useful information on the QoE and help to better understand its influencing factors. Here, we present a systematic review of the methodologies of longitudinal studies in the QoE domain. We review papers selected through a systematic search and discuss various aspects of described studies, such as methods of gathering subjective assessment or length of the studies. Our work recognizes common practices that can be used to reproduce and extend the proposed long-term study designs. Additionally, based on our review, we propose future work directions for the longitudinal QoE studies.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: The role of theoretical models in ecologically valid studies : the example of a video Quality of Experience model
Autorzy:: Wierzchoń, Michał
Janowski, Lucjan
Subramanian, Sruti
De Moor, Katrien
Koniuch, Kamil
Wydawca:: Institute of Electrical and Electronics Engineers (IEEE)
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Top-down and bottom-up approaches to video Quality of Experience studies : overview and proposal of a new model
Autorzy:: Baraković Husić, Jasmina
Janowski, Lucjan
Subramanian, Sruti
De Moor, Katrien
Koniuch, Kamil
Wierzchoń, Michał
Baraković, Sabina
Opis:: Modern video streaming services require quality assurance of the presented audiovisual material. Quality assurance mechanisms allow streaming platforms to provide quality levels that are considered sufficient to yield user satisfaction, with the least possible amount of data transferred. A variety of measures and approaches have been developed to control video quality, e.g., by adapting it to network conditions. These include objective matrices of the quality and thresholds identified by means of subjective perceptual judgments. The former group of matrices has recently gained the attention of (multi) media researchers. They call this area of study "Quality of Experience" (QoE). In this paper, we present a theoretical model based on review of previous QoE’s models. We argue that most of them represent the bottom-up approach to modeling. Such models focus on describing as many variables as possible, but with a limited ability to investigate the causal relationship between them; therefore, the applicability of the findings in practice is limited. To advance the field, we therefore propose a structural, top-down model of video QoE that describes causal relationships among variables. This novel top-down model serves as a practical guide for structuring QoE experiments, ensuring the incorporation of influential factors in a confirmatory manner.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Informacja

Wyszukujesz frazę "Janowski, Lucjan" wg kryterium: Autor