An Empirical Study of Mobile Application Usability: A Unified Hierarchical Approach
Bibliographic record
Abstract
Mobile app usability has been attracting the attention of academics and practitioners for sometime because well-designed mobile apps can build a close link between businesses and users in addition to enhancing user experiences. To better understand mobile app usability, this study develops a unified hierarchical approach that characterizes mobile app usability from the high level of “usability principles” to the intermediary level of “usability attributes” to the detailed level of “usability features” to assess the usability of current mobile apps from different categories. Using an online survey, we identified a set of usability design features that are common to all categories of apps. Furthermore, the study identifies a set of important and less important usability features within specific mobile app categories. In addition to the practical implications consisting of insights for mobile app design, the study found important relationships among usability principles, attributes, and features.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.027 | 0.085 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.009 | 0.007 |
| Science and technology studies | 0.003 | 0.007 |
| Scholarly communication | 0.005 | 0.008 |
| Open science | 0.002 | 0.005 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".