Search Results for author: Onur Dikmen

Found 9 papers, 2 papers with code

Wisdom of the Contexts: Active Ensemble Learning for Contextual Anomaly Detection

no code implementations27 Jan 2021 Ece Calikus, Slawomir Nowaczyk, Mohamed-Rafik Bouguelia, Onur Dikmen

Furthermore, the results support our initial hypothesis that there is no single perfect context that successfully uncovers all kinds of contextual anomalies, and leveraging the "wisdom" of multiple contexts is necessary.

Active Learning Contextual Anomaly Detection +1

No Free Lunch But A Cheaper Supper: A General Framework for Streaming Anomaly Detection

no code implementations16 Sep 2019 Ece Calikus, Slawomir Nowaczyk, Anita Sant'Anna, Onur Dikmen

To date, there exists no single general method that has been shown to outperform the others across different anomaly types, use cases and datasets.

Anomaly Detection

Differentially Private Markov Chain Monte Carlo

1 code implementation NeurIPS 2019 Mikko A. Heikkilä, Joonas Jälkö, Onur Dikmen, Antti Honkela

Recent developments in differentially private (DP) machine learning and DP Bayesian learning have enabled learning under strong privacy guarantees for the training data subjects.

Differentially Private Variational Inference for Non-conjugate Models

2 code implementations27 Oct 2016 Joonas Jälkö, Onur Dikmen, Antti Honkela

It is built on top of doubly stochastic variational inference, a recent advance which provides a variational solution to a large class of models.

Bayesian Inference Variational Inference

Efficient differentially private learning improves drug sensitivity prediction

no code implementations7 Jun 2016 Antti Honkela, Mrinal Das, Arttu Nieminen, Onur Dikmen, Samuel Kaski

Good personalised predictions are vitally important in precision medicine, but genomic information on which the predictions are based is also particularly sensitive, as it directly identifies the patients and hence cannot easily be anonymised.

Learning Mixtures of Ising Models using Pseudolikelihood

no code implementations8 Jun 2015 Onur Dikmen

Maximum pseudolikelihood method has been among the most important methods for learning parameters of statistical physics models, such as Ising models.

Learning the Information Divergence

no code implementations5 Jun 2014 Onur Dikmen, Zhirong Yang, Erkki Oja

Here we present a framework that facilitates automatic selection of the best divergence among a given family, based on standard maximum likelihood estimation.

BIG-bench Machine Learning Topic Models

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