Tapio Pahikkala
Professor
aatapa@utu.fi +358 29 450 4323 +358 50 345 5824 Office: 456D ORCID identifier: https://orcid.org/0000-0003-4183-2455 |
Machine learning, Data science, Artificial intelligence
Machine learning, Data science, Artificial intelligence
Tapio Pahikkala is a professor of computer science in the University of Turku, Finland, from which he also received his doctoral degree in 2008. He has authored more than 150 peer-reviewed scientific articles and participated in the winning teams of several international scientific competitions/challenges. He has led many research projects, supervised more than ten doctoral theses, held several positions of trust in academia and served in the program committees of numerous international conferences. His current research interests include theory and algorithmics of machine learning, data analysis, and artificial intelligence, as well as their applications on various different fields.
Theory and algorithmics of machine learning, data science and artificial intelligence as well as their practical applications in various different fields. Estimation of prediction performance with resampling methods, theory of resampling and cross-validation.
Current research projects:Academy of Finland: "AI technologies for interaction prediction in biomedicine", Academy of Finland: "Machine Learning for Systems Pharmacology", Business Finland: "Privasa".
The course I am currently responsible of: ``Evaluation of Machine Learning Methods'', consists of a series of practical cases studies that are each presented by different assistant teachers that act as clients of data scientists. The clients then introduce the problem the the data scientist should solve for them and the details of the data. The students' job is then implement the data analysis pipeline, train a predictive model, do a proper experimental design and carry out carry out statistical estimation of the prediction performance for each client. To achieve this, they study the accompanying course material that is currently in the form of both video lectures and reading material. All the clients' cases correspond to real cases from which our team has written research articles in the past. For example, the case concerning metal ion concentration prediction from drinking water is based on our research cooperation with the chemistry deparment of the University of Turku (Pihlasalo et al. 2016), the case on water permeability prediction in forestry for route planning of forest harvesters and the use of newly developed spatial cross-validation for estimating the prediction performance in that context is based on our cooperation with the Natural Resources Center of Finland (Pohjankukka et al. 2017), and the case concerning drug-target interaction prediction is based on our research cooperation with Institute for Molecular Medicine Finland (Pahikkala et al. 2015), to highlight a few. We have also had plans to involve cases from private companies in the future, such that would correspond to real commercial cases.
- Parallelized Online Regularized Least-Squares for Adaptive Embedded Systems (2012)
- International Journal of Embedded and Real-Time Communication Systems
(A1 Refereed original research article in a scientific journal) - The Federated Computer Science Event (2012) The Federated Computer Science Event 2012 Tarkoma Sasu, Kämäräinen Joni-Kristian, Pahikkala Tapio
(C2 Editorial work for a scientific compilation book) - Unsupervised Multi-Class Regularized Least-Squares Classification (2012)
- IEEE International Conference on Data Mining
(A4 Refereed article in a conference publication ) - Wrapper-based selection of genetic features in genome-wide association studies through fast matrix operations (2012)
- Algorithms for Molecular Biology
(A1 Refereed original research article in a scientific journal) - An experimental comparison of cross-validation techniques for estimating the area under the ROC curve (2011)
- Computational Statistics and Data Analysis
(A1 Refereed original research article in a scientific journal) - An Improved Training Algorithm for the Linear Ranking Support Vector Machine (2011)
- Lecture Notes in Computer Science
(A4 Refereed article in a conference publication ) - A parallel online regularized least-squares machine learning algorithm for future multi-core processors (2011) Proceedings of the 1st International Conference on Pervasive and Embedded Computing and Communication Systems (PECCS 2011) Pahikkala T, Airola A, Xu TC, Liljeberg P, Tenhunen H, Salakoski T
(A4 Refereed article in a conference publication ) - Drug-Drug Interaction Extraction with RLS and SVM Classifiers (2011)
- CEUR Workshop Proceedings
(A4 Refereed article in a conference publication ) - EXTRACTING CONTEXTUALIZED COMPLEX BIOLOGICAL EVENTS WITH RICH GRAPH-BASED FEATURE SETS (2011)
- Computational Intelligence
(A1 Refereed original research article in a scientific journal) - Fast and Parallelized Greedy Forward Selection of Genetic Variants in Genome-Wide Association Studies (2011) IEEE International Workshop on Genomic Signal Processing and Statistics (GENSIPS 2011) Okser S, Pahikkala T, Airola A, Aittokallio T, Salakoski T
(A4 Refereed article in a conference publication ) - Greedy Regularized Least-Squares for Multi-Task Learning (2011) 11th IEEE International Conference on Data Mining Workshops (ICDMW'11) Naula P, Pahikkala T, Airola A, Salakoski T
(A4 Refereed article in a conference publication ) - Learning Multi-Label Predictors under Sparsity Budget (2011)
- Frontiers in Artificial Intelligence and Applications
(A4 Refereed article in a conference publication ) - Learning Valued Relations from Data (2011)
- Advances in intelligent and soft computing
(A1 Refereed original research article in a scientific journal) - On Learning and Cross-Validation with Decomposed Nystrom Approximation of Kernel Matrix (2011)
- Neural Processing Letters
(A1 Refereed original research article in a scientific journal) - Speedy Local Search for Semi-Supervised Regularized Least-Squares (2011)
- Lecture Notes in Computer Science
(A4 Refereed article in a conference publication ) - Training linear ranking SVMs in linearithmic time using red-black trees (2011)
- Pattern Recognition Letters
(A1 Refereed original research article in a scientific journal) - A comparison of {AUC} estimators in small-sample studies (2010)
- Journal of Machine Learning Research
(A4 Refereed article in a conference publication ) - A comparison of AUC estimators in small-sample studies (2010)
- JMLR workshop and conference proceedings
(A4 Refereed article in a conference publication ) - Applying permutation tests for assessing the statistical significance of wrapper based feature selection (2010) Proceedings of The Ninth International Conference on Machine Learning and Applications (ICMLA 2010) Airola A, Pahikkala T, Boberg J, Salakoski T
(A4 Refereed article in a conference publication ) - Conditional Ranking on Relational Data (2010)
- Lecture Notes in Computer Science
(A1 Refereed original research article in a scientific journal)