Click prediction boosting via Bayesian hyperparameter optimization-based ensemble learning pipelines

dc.authoridTOKUC, AYSE AYLIN/0000-0002-5331-5706
dc.authorwosidTekin, Ahmet/ACF-9630-2022
dc.authorwosidTokuç, A. Aylin/IXN-5337-2023
dc.contributor.authorDemirel, Cagatay
dc.contributor.authorTokuc, A. Aylin
dc.contributor.authorTekin, Ahmet Tezcan
dc.date.accessioned2024-10-15T19:38:54Z
dc.date.available2024-10-15T19:38:54Z
dc.date.issued2023
dc.departmentKadir Has Universityen_US
dc.department-temp[Demirel, Cagatay] Istanbul Tech Univ, Comp Engn Dept, TR-34467 Istanbul, Turkiye; [Demirel, Cagatay] Donders Inst Brain Cognit & Behav, Kapittelweg 29, NL-6525 EN Nijmegen, Netherlands; [Tokuc, A. Aylin] Kadir Has Univ, Comp Engn Dept, Istanbul, Turkiye; [Tekin, Ahmet Tezcan] Istanbul Tech Univ, Management Engn Dept, Istanbul, Turkiyeen_US
dc.descriptionTOKUC, AYSE AYLIN/0000-0002-5331-5706en_US
dc.description.abstractOnline travel agencies (OTA's) advertise their website offers on meta-search bidding engines. The problem of predicting the number of clicks a hotel would receive for a given bid amount is an important step in the management of an OTA's advertisement campaign on a meta-search engine because bid times number of clicks defines the cost to be generated. Various regressors are ensembled in this work to improve click prediction performance. After preprocessing, the entire feature set is divided into 5 groups, with the training set preceding the test set in the time domain, and multi-set validation is applied. The training data for each validation set is then subjected to feature elimination, and the selected models are next validated with separate ensemble models based on the mean and weighted average of the test predictions. Additionally, a stacked meta-regressor is designed and tested, along with the complete train set, whose click prediction values are extracted in accordance with the out- of-fold prediction principle. The original feature set and the stacked input data are then combined, and level-1 regressors are trained once again to form blended meta-regressors. All individually trained models are then compared pairwise with their ensemble variations. Adjusted R 2 score is chosen as the main evaluation metric. The meta-models with tree-based ensemble level-1 regressors do not provide any performance improvement over the stand-alone versions, whereas the stack and blended ensemble models with all other non-tree-based models as level-1 regressors boost click prediction (0.114 and 0.124) significantly compared to their stand-alone versions. Additionally, statistical evidence is provided to support the importance of Bayesian hyperparameter optimization to the performance-boosting of level-1 regressors.en_US
dc.description.woscitationindexEmerging Sources Citation Index
dc.identifier.citation1
dc.identifier.doi10.1016/j.iswa.2023.200185
dc.identifier.issn2667-3053
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.iswa.2023.200185
dc.identifier.urihttps://hdl.handle.net/20.500.12469/6292
dc.identifier.volume17en_US
dc.identifier.wosWOS:001306715500005
dc.identifier.wosqualityN/A
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectMachine learningen_US
dc.subjectEnsemble learningen_US
dc.subjectMeta-regressorsen_US
dc.subjectBayesian optimizationen_US
dc.subjectMeta-search enginesen_US
dc.subjectOnline travel agenciesen_US
dc.titleClick prediction boosting via Bayesian hyperparameter optimization-based ensemble learning pipelinesen_US
dc.typeArticleen_US
dspace.entity.typePublication

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