Search Results for author: Ali Taylan Cemgil

Found 14 papers, 5 papers with code

Conformal prediction under ambiguous ground truth

1 code implementation18 Jul 2023 David Stutz, Abhijit Guha Roy, Tatiana Matejovicova, Patricia Strachan, Ali Taylan Cemgil, Arnaud Doucet

However, in many real-world scenarios, the labels $Y_1,..., Y_n$ are obtained by aggregating expert opinions using a voting procedure, resulting in a one-hot distribution $\mathbb{P}_{vote}^{Y|X}$.

Conformal Prediction Uncertainty Quantification

Transformers Meet Directed Graphs

1 code implementation31 Jan 2023 Simon Geisler, Yujia Li, Daniel Mankowitz, Ali Taylan Cemgil, Stephan Günnemann, Cosmin Paduraru

Transformers were originally proposed as a sequence-to-sequence model for text but have become vital for a wide range of modalities, including images, audio, video, and undirected graphs.

graph construction Graph Property Prediction

Learning Optimal Conformal Classifiers

2 code implementations ICLR 2022 David Stutz, Krishnamurthy, Dvijotham, Ali Taylan Cemgil, Arnaud Doucet

However, using CP as a separate processing step after training prevents the underlying model from adapting to the prediction of confidence sets.

Conformal Prediction Medical Diagnosis

Towards Fair Personalization by Avoiding Feedback Loops

no code implementations20 Dec 2020 Gökhan Çapan, Özge Bozal, İlker Gündoğdu, Ali Taylan Cemgil

Self-reinforcing feedback loops are both cause and effect of over and/or under-presentation of some content in interactive recommender systems.

Recommendation Systems

Bayesian Model Selection for Identifying Markov Equivalent Causal Graphs

no code implementations pproximateinference AABI Symposium 2019 Mehmet Burak Kurutmaz, Melih Barsbey, Ali Taylan Cemgil, Sinan Yildirim, Umut Şimşekli

We believe that the Bayesian approach to causal discovery both allows the rich methodology of Bayesian inference to be used in various difficult aspects of this problem and provides a unifying framework to causal discovery research.

Bayesian Inference Causal Discovery +1

A Bayesian Choice Model for Eliminating Feedback Loops

no code implementations15 Aug 2019 Gökhan Çapan, Ilker Gündoğdu, Ali Caner Türkmen, Çağrı Sofuoğlu, Ali Taylan Cemgil

Self-reinforcing feedback loops in personalization systems are typically caused by users choosing from a limited set of alternatives presented systematically based on previous choices.

Recommendation Systems Thompson Sampling

Bayesian Allocation Model: Inference by Sequential Monte Carlo for Nonnegative Tensor Factorizations and Topic Models using Polya Urns

1 code implementation11 Mar 2019 Ali Taylan Cemgil, Mehmet Burak Kurutmaz, Sinan Yildirim, Melih Barsbey, Umut Simsekli

We introduce a dynamic generative model, Bayesian allocation model (BAM), which establishes explicit connections between nonnegative tensor factorization (NTF), graphical models of discrete probability distributions and their Bayesian extensions, and the topic models such as the latent Dirichlet allocation.

Model Selection Topic Models

Audio Source Separation Using Variational Autoencoders and Weak Class Supervision

1 code implementation31 Oct 2018 Ertuğ Karamatlı, Ali Taylan Cemgil, Serap Kırbız

In this paper, we propose a source separation method that is trained by observing the mixtures and the class labels of the sources present in the mixture without any access to isolated sources.

Audio Source Separation Denoising

Differentially Private Dropout

no code implementations30 Nov 2017 Beyza Ermis, Ali Taylan Cemgil

Large data collections required for the training of neural networks often contain sensitive information such as the medical histories of patients, and the privacy of the training data must be preserved.

Privacy Preserving

Differentially Private Variational Dropout

no code implementations30 Nov 2017 Beyza Ermis, Ali Taylan Cemgil

In this paper, we modify the recently proposed variational dropout technique which provided an elegant Bayesian interpretation to dropout, and show that the intrinsic noise in the variational dropout can be exploited to obtain a degree of differential privacy.

Privacy Preserving

Clustering Words by Projection Entropy

no code implementations24 Oct 2014 Işık Barış Fidaner, Ali Taylan Cemgil

We apply entropy agglomeration (EA), a recently introduced algorithm, to cluster the words of a literary text.

Clustering

Summary Statistics for Partitionings and Feature Allocations

no code implementations NeurIPS 2013 Işık Barış Fidaner, Ali Taylan Cemgil

Experiments on various infinite mixture posteriors as well as a feature allocation dataset demonstrate that the proposed statistics are useful in practice.

Clustering

Cannot find the paper you are looking for? You can Submit a new open access paper.