Search Results for author: Kai Puolamäki

Found 15 papers, 7 papers with code

Using Slisemap to interpret physical data

no code implementations24 Oct 2023 Lauri Seppäläinen, Anton Björklund, Vitus Besel, Kai Puolamäki

Explainable artificial intelligence is used to investigate the decision processes of black box machine learning models and complex simulators.

Explainable artificial intelligence

SLISEMAP: Supervised dimensionality reduction through local explanations

1 code implementation12 Jan 2022 Anton Björklund, Jarmo Mäkelä, Kai Puolamäki

Existing methods for explaining black box learning models often focus on building local explanations of model behaviour for a particular data item.

Classification Explainable Models +1

Interactive Causal Structure Discovery in Earth System Sciences

1 code implementation1 Jul 2021 Laila Melkas, Rafael Savvides, Suyog Chandramouli, Jarmo Mäkelä, Tuomo Nieminen, Ivan Mammarella, Kai Puolamäki

We present a workflow that is required to take this knowledge into account and to apply CSD algorithms in Earth system sciences.

Tell Me Something I Don't Know: Randomization Strategies for Iterative Data Mining

no code implementations16 Jun 2020 Sami Hanhijärvi, Markus Ojala, Niko Vuokko, Kai Puolamäki, Nikolaj Tatti, Heikki Mannila

At each step in the data mining process, the randomization produces random samples from the set of data matrices satisfying the already discovered patterns or models.

Clustering

Low-Cost Outdoor Air Quality Monitoring and Sensor Calibration: A Survey and Critical Analysis

no code implementations13 Dec 2019 Francesco Concas, Julien Mineraud, Eemil Lagerspetz, Samu Varjonen, Xiaoli Liu, Kai Puolamäki, Petteri Nurmi, Sasu Tarkoma

Periodic re-calibration can improve the accuracy of low-cost sensors, particularly with machine-learning-based calibration, which has shown great promise due to its capability to calibrate sensors in-field.

BIG-bench Machine Learning

Estimating regression errors without ground truth values

no code implementations9 Oct 2019 Henri Tiittanen, Emilia Oikarinen, Andreas Henelius, Kai Puolamäki

Regression analysis is a standard supervised machine learning method used to model an outcome variable in terms of a set of predictor variables.

regression

Guided Visual Exploration of Relations in Data Sets

1 code implementation7 May 2019 Kai Puolamäki, Emilia Oikarinen, Andreas Henelius

This paper proposes a principled framework for interactive visual exploration of relations in data, through views most informative given the user's current knowledge and objectives.

Dimensionality Reduction

Human-guided data exploration using randomisation

1 code implementation20 May 2018 Kai Puolamäki, Emilia Oikarinen, Buse Atli, Andreas Henelius

An explorative data analysis system should be aware of what the user already knows and what the user wants to know of the data: otherwise the system cannot provide the user with the most informative and useful views of the data.

Human-Guided Data Exploration

no code implementations9 Apr 2018 Andreas Henelius, Emilia Oikarinen, Kai Puolamäki

This framework allows the user to incorporate existing knowledge into the exploration process, focus on exploring a subset of the data, and compare different complex hypotheses concerning relations in the data.

Interactive Visual Data Exploration with Subjective Feedback: An Information-Theoretic Approach

1 code implementation23 Oct 2017 Kai Puolamäki, Emilia Oikarinen, Bo Kang, Jefrey Lijffijt, Tijl De Bie

We conclude that the information theoretic approach to exploratory data analysis where patterns observed by a user are formalized as constraints provides a principled, intuitive, and efficient basis for constructing an EDA system.

Interpreting Classifiers through Attribute Interactions in Datasets

no code implementations24 Jul 2017 Andreas Henelius, Kai Puolamäki, Antti Ukkonen

In this work we present the novel ASTRID method for investigating which attribute interactions classifiers exploit when making predictions.

Attribute General Classification

Multivariate Confidence Intervals

no code implementations20 Jan 2017 Jussi Korpela, Emilia Oikarinen, Kai Puolamäki, Antti Ukkonen

In this paper we define confidence intervals for multivariate data that extend the one-dimensional definition in a natural way.

Clustering with Confidence: Finding Clusters with Statistical Guarantees

1 code implementation27 Dec 2016 Andreas Henelius, Kai Puolamäki, Henrik Boström, Panagiotis Papapetrou

In this study, we propose a technique for quantifying the instability of a clustering solution and for finding robust clusters, termed core clusters, which correspond to clusters where the co-occurrence probability of each data item within a cluster is at least $1 - \alpha$.

Clustering

Finding Statistically Significant Attribute Interactions

1 code implementation22 Dec 2016 Andreas Henelius, Antti Ukkonen, Kai Puolamäki

In many data exploration tasks it is meaningful to identify groups of attribute interactions that are specific to a variable of interest.

Attribute feature selection

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