Search Results for author: Krzysztof Dembczyński

Found 10 papers, 5 papers with code

On Missing Labels, Long-tails and Propensities in Extreme Multi-label Classification

no code implementations26 Jul 2022 Erik Schultheis, Marek Wydmuch, Rohit Babbar, Krzysztof Dembczyński

The propensity model introduced by Jain et al. 2016 has become a standard approach for dealing with missing and long-tail labels in extreme multi-label classification (XMLC).

Extreme Multi-Label Classification Missing Labels +1

Propensity-scored Probabilistic Label Trees

1 code implementation20 Oct 2021 Marek Wydmuch, Kalina Jasinska-Kobus, Rohit Babbar, Krzysztof Dembczyński

Extreme multi-label classification (XMLC) refers to the task of tagging instances with small subsets of relevant labels coming from an extremely large set of all possible labels.

Extreme Multi-Label Classification Recommendation Systems

Online probabilistic label trees

1 code implementation8 Jul 2020 Kalina Jasinska-Kobus, Marek Wydmuch, Devanathan Thiruvenkatachari, Krzysztof Dembczyński

We introduce online probabilistic label trees (OPLTs), an algorithm that trains a label tree classifier in a fully online manner without any prior knowledge about the number of training instances, their features and labels.

Few-Shot Learning Multi-class Classification

Efficient Set-Valued Prediction in Multi-Class Classification

4 code implementations19 Jun 2019 Thomas Mortier, Marek Wydmuch, Krzysztof Dembczyński, Eyke Hüllermeier, Willem Waegeman

In cases of uncertainty, a multi-class classifier preferably returns a set of candidate classes instead of predicting a single class label with little guarantee.

Classification General Classification +1

A no-regret generalization of hierarchical softmax to extreme multi-label classification

1 code implementation NeurIPS 2018 Marek Wydmuch, Kalina Jasinska, Mikhail Kuznetsov, Róbert Busa-Fekete, Krzysztof Dembczyński

Extreme multi-label classification (XMLC) is a problem of tagging an instance with a small subset of relevant labels chosen from an extremely large pool of possible labels.

Extreme Multi-Label Classification General Classification

Consistency Analysis for Binary Classification Revisited

no code implementations ICML 2017 Krzysztof Dembczyński, Wojciech Kotłowski, Oluwasanmi Koyejo, Nagarajan Natarajan

Statistical learning theory is at an inflection point enabled by recent advances in understanding and optimizing a wide range of metrics.

Binary Classification Classification +2

Surrogate regret bounds for generalized classification performance metrics

no code implementations27 Apr 2015 Wojciech Kotłowski, Krzysztof Dembczyński

We show that the regret of the resulting classifier (obtained from thresholding $f$ on $\widehat{\theta}$) measured with respect to the target metric is upperbounded by the regret of $f$ measured with respect to the surrogate loss.

Binary Classification Classification +1

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