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| Factorial A/B Test× | Πειραματικός Σχεδιασμός Κλασματικού Παραγοντικού Πειράματος× | |
|---|---|---|
| Πεδίο | Πειραματικός Σχεδιασμός | Πειραματικός Σχεδιασμός |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | Factorial design: 1920s–1930s; applied online as factorial A/B test: 2000s–2010s | 1945 (Finney); broader development 1950s–1970s by Box, Hunter |
| Δημιουργός≠ | Ronald A. Fisher (factorial design); digital A/B testing popularized by Google, Microsoft, and Amazon in the 2000s | D. J. Finney (formal development); foundations in Ronald Fisher's factorial design work |
| Τύπος≠ | Controlled online/field experiment | Quantitative experimental design |
| Θεμελιώδης πηγή≠ | Kohavi, R., Tang, D., & Xu, Y. (2020). Trustworthy Online Controlled Experiments: A Practical Guide to A/B Testing. Cambridge University Press. ISBN: 978-1108724265 | Box, G. E. P., Hunter, J. S., & Hunter, W. G. (2005). Statistics for Experimenters: Design, Innovation, and Discovery (2nd ed.). Wiley-Interscience. ISBN: 978-0471718130 |
| Εναλλακτικές ονομασίες | factorial split test, multi-factor A/B test, factorial online experiment, factorial controlled experiment | fractional factorial design, FFD, 2^(k-p) design, fractional replication |
| Συναφείς≠ | 6 | 4 |
| Σύνοψη≠ | A factorial A/B test is a controlled online experiment that simultaneously manipulates two or more independent factors, each at two or more levels, exposing different user groups to every combination of factor levels. Rooted in Fisher's factorial design and operationalised at scale by tech companies, it enables researchers to estimate both the independent main effect of each factor and the interaction effects between factors — all from a single experimental run. | A fractional factorial experiment is a resource-efficient experimental design that tests only a carefully chosen fraction of all possible factor-level combinations. By exploiting the principle that high-order interactions are usually negligible, it identifies the main effects and low-order interactions of k factors using far fewer runs than a full factorial design — making it the workhorse of industrial and engineering screening experiments. |
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