Search Results for author: Jaakko Peltonen

Found 8 papers, 2 papers with code

Steering Distortions to Preserve Classes and Neighbors in Supervised Dimensionality Reduction

no code implementations NeurIPS 2020 Benoît Colange, Jaakko Peltonen, Michael Aupetit, Denys Dutykh, Sylvain Lespinats

Nonlinear dimensionality reduction of high-dimensional data is challenging as the low-dimensional embedding will necessarily contain distortions, and it can be hard to determine which distortions are the most important to avoid.

Supervised dimensionality reduction

Scalable Probabilistic Matrix Factorization with Graph-Based Priors

1 code implementation25 Aug 2019 Jonathan Strahl, Jaakko Peltonen, Hiroshi Mamitsuka, Samuel Kaski

The identification and removal of contested edges adds no computational complexity to state-of-the-art graph-regularized matrix factorization, remaining linear with respect to the number of non-zeros.

 Ranked #1 on Recommendation Systems on YahooMusic (using extra training data)

Matrix Completion Recommendation Systems

Computing Stable Demers Cartograms

1 code implementation20 Aug 2019 Soeren Nickel, Max Sondag, Wouter Meulemans, Markus Chimani, Stephen Kobourov, Jaakko Peltonen, Martin Nöllenburg

We enforce orthogonal separation constraints with linear programming, and measure quality in terms of keeping adjacent regions close (cartogram quality) and using similar positions for a region between the different data values (stability).

Computational Geometry Data Structures and Algorithms

Peacock Bundles: Bundle Coloring for Graphs with Globality-Locality Trade-off

no code implementations2 Sep 2016 Jaakko Peltonen, Ziyuan Lin

In large graphs the necessary compromise is whether to differentiate colors sharply between locally occurring strongly bundled edges ("local bundles"), or also between the weakly bundled edges occurring globally over the graph ("global bundles"); we allow a user-set global-local tradeoff.

Dimensionality Reduction

An Information Retrieval Approach to Finding Dependent Subspaces of Multiple Views

no code implementations19 Nov 2015 Ziyuan Lin, Jaakko Peltonen

The basic CCA is restricted to maximizing a simple dependency criterion, correlation, measured directly between data coordinates.

Information Retrieval Retrieval

Toward computational cumulative biology by combining models of biological datasets

no code implementations1 Apr 2014 Ali Faisal, Jaakko Peltonen, Elisabeth Georgii, Johan Rung, Samuel Kaski

A main challenge of data-driven sciences is how to make maximal use of the progressively expanding databases of experimental datasets in order to keep research cumulative.

Retrieval

Periodic Finite State Controllers for Efficient POMDP and DEC-POMDP Planning

no code implementations NeurIPS 2011 Joni K. Pajarinen, Jaakko Peltonen

Applications such as robot control and wireless communication require planning under uncertainty.

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