1 code implementation • 23 Nov 2023 • Lena Stempfle, Fredrik D. Johansson
Rule models are often preferred in prediction tasks with tabular inputs as they can be easily interpreted using natural language and provide predictive performance on par with more complex models.
1 code implementation • 22 Jun 2023 • Emil Carlsson, Debabrota Basu, Fredrik D. Johansson, Devdatt Dubhashi
Both these algorithms try to track an optimal allocation based on the lower bound and computed by a weighted projection onto the boundary of a normal cone.
no code implementations • 16 Mar 2023 • Adam Breitholtz, Anton Matsson, Fredrik D. Johansson
The latter is often violated in high-dimensional applications such as image classification which, despite this challenge, continues to serve as inspiration and benchmark for algorithm development.
Multi-Label Image Classification Unsupervised Domain Adaptation
no code implementations • 15 Mar 2023 • Adam Breitholtz, Fredrik D. Johansson
We find that all bounds are vacuous and that sample generalization terms account for much of the observed looseness, especially when these terms interact with measures of domain shift.
1 code implementation • 20 Jan 2023 • Sofia Ek, Dave Zachariah, Fredrik D. Johansson, Petre Stoica
We consider the problem of evaluating the performance of a decision policy using past observational data.
no code implementations • 22 Jun 2022 • Lena Stempfle, Ashkan Panahi, Fredrik D. Johansson
Conversely, fitting a single shared model to the full data set relies on imputation which often leads to biased results when missingness depends on unobserved factors.
no code implementations • 22 Nov 2021 • Anton Matsson, Fredrik D. Johansson
If the behavior policy is estimated using black-box models, it can be hard to diagnose potential problems and to determine for which inputs the policies differ in their suggested actions and resulting values.
no code implementations • 12 Nov 2021 • Newton Mwai Kinyanjui, Fredrik D. Johansson
Simulators make unique benchmarks for causal effect estimation since they do not rely on unverifiable assumptions or the ability to intervene on real-world systems, but are often too simple to capture important aspects of real applications.
1 code implementation • 28 Oct 2021 • Rickard K. A. Karlsson, Martin Willbo, Zeshan Hussain, Rahul G. Krishnan, David Sontag, Fredrik D. Johansson
Our question is when using this privileged data leads to more sample-efficient learning of models that use only baseline data for predictions at test time.
no code implementations • 6 Sep 2021 • Emil Carlsson, Devdatt Dubhashi, Fredrik D. Johansson
We propose algorithms based on a multi-level Thompson sampling scheme, for the stochastic multi-armed bandit and its contextual variant with linear expected rewards, in the setting where arms are clustered.
no code implementations • 28 May 2021 • Emil Carlsson, Devdatt Dubhashi, Fredrik D. Johansson
The agents gradually learn to communicate using reinforcement learning and the resulting numeral systems are shown to be efficient in the information-theoretic framework of Regier et al. (2015); Gibson et al. (2017).
1 code implementation • NeurIPS 2020 • Samuel Håkansson, Viktor Lindblom, Omer Gottesman, Fredrik D. Johansson
Finding an effective medical treatment often requires a search by trial and error.
no code implementations • 21 Jan 2020 • Fredrik D. Johansson, Uri Shalit, Nathan Kallus, David Sontag
Practitioners in diverse fields such as healthcare, economics and education are eager to apply machine learning to improve decision making.
no code implementations • ICML 2020 • Maggie Makar, Fredrik D. Johansson, John Guttag, David Sontag
Estimation of individual treatment effects is commonly used as the basis for contextual decision making in fields such as healthcare, education, and economics.
1 code implementation • 9 Jul 2019 • Michael Oberst, Fredrik D. Johansson, Dennis Wei, Tian Gao, Gabriel Brat, David Sontag, Kush R. Varshney
Overlap between treatment groups is required for non-parametric estimation of causal effects.
no code implementations • 28 Mar 2019 • Nils M. Kriege, Fredrik D. Johansson, Christopher Morris
Graph kernels have become an established and widely-used technique for solving classification tasks on graphs.
no code implementations • 8 Mar 2019 • Fredrik D. Johansson, David Sontag, Rajesh Ranganath
In this work, we give generalization bounds for unsupervised domain adaptation that hold for any representation function by acknowledging the cost of non-invertibility.
no code implementations • 14 Nov 2018 • Fredrik D. Johansson
We study heterogeneity in the effect of a mindset intervention on student-level performance through an observational dataset from the National Study of Learning Mindsets (NSLM).
no code implementations • NeurIPS 2018 • Irene Chen, Fredrik D. Johansson, David Sontag
Recent attempts to achieve fairness in predictive models focus on the balance between fairness and accuracy.
no code implementations • ICLR 2018 • Fredrik D. Johansson, Nathan Kallus, Uri Shalit, David Sontag
We pose both of these problems as prediction under a shift in design.
no code implementations • ICML 2017 • Ashkan Panahi, Devdatt Dubhashi, Fredrik D. Johansson, Chiranjib Bhattacharyya
Standard clustering methods such as K-means, Gaussian mixture models, and hierarchical clustering are beset by local minima, which are sometimes drastically suboptimal.
1 code implementation • 10 Nov 2016 • Emilio Jorge, Mikael Kågebäck, Fredrik D. Johansson, Emil Gustavsson
The images from the game provide a non trivial environment for the agents to discuss and a natural grounding for the concepts they decide to encode in their communication.
4 code implementations • ICML 2017 • Uri Shalit, Fredrik D. Johansson, David Sontag
We give a novel, simple and intuitive generalization-error bound showing that the expected ITE estimation error of a representation is bounded by a sum of the standard generalization-error of that representation and the distance between the treated and control distributions induced by the representation.
Ranked #3 on Causal Inference on Jobs
1 code implementation • 12 May 2016 • Fredrik D. Johansson, Uri Shalit, David Sontag
Observational studies are rising in importance due to the widespread accumulation of data in fields such as healthcare, education, employment and ecology.
no code implementations • NeurIPS 2015 • Fredrik D. Johansson, Ankani Chattoraj, Chiranjib Bhattacharyya, Devdatt Dubhashi
We introduce a unifying generalization of the Lovász theta function, and the associated geometric embedding, for graphs with weights on both nodes and edges.
no code implementations • 22 Oct 2015 • Linus Hermansson, Fredrik D. Johansson, Osamu Watanabe
We consider the problem of classifying graphs using graph kernels.