no code implementations • 17 Feb 2024 • Vijay Keswani, Anay Mehrotra, L. Elisa Celis
For any exploration strategy, the approach comes with guarantees that (1) all sub-populations are explored, (2) the fraction of false positives is bounded, and (3) the trained classifier converges to a "desired" classifier.
1 code implementation • NeurIPS 2023 • L. Elisa Celis, Amit Kumar, Anay Mehrotra, Nisheeth K. Vishnoi
We characterize the distributions that arise from our model and study the effect of the parameters on the observed distribution.
1 code implementation • 16 Jun 2023 • Niclas Boehmer, L. Elisa Celis, Lingxiao Huang, Anay Mehrotra, Nisheeth K. Vishnoi
We consider the problem of subset selection where one is given multiple rankings of items and the goal is to select the highest ``quality'' subset.
1 code implementation • 31 May 2023 • Vijay Keswani, L. Elisa Celis, Krishnaram Kenthapadi, Matthew Lease
Instead, we find ourselves in a "closed" decision-making loop in which the same fallible human decisions we rely on in practice must also be used to guide task allocation.
no code implementations • 22 May 2022 • Vijay Keswani, L. Elisa Celis
In real-world classification settings, such as loan application evaluation or content moderation on online platforms, individuals respond to classifier predictions by strategically updating their features to increase their likelihood of receiving a particular (positive) decision (at a certain cost).
1 code implementation • 15 Jul 2021 • Vijay Keswani, L. Elisa Celis
Our proposed algorithm uses the pairwise similarity between elements in the dataset and elements in the control set to effectively bootstrap an approximation to the disparity of the dataset.
1 code implementation • NeurIPS 2021 • L. Elisa Celis, Anay Mehrotra, Nisheeth K. Vishnoi
Our main contribution is an optimization framework to learn fair classifiers in this adversarial setting that comes with provable guarantees on accuracy and fairness.
2 code implementations • 9 Nov 2020 • Anay Mehrotra, L. Elisa Celis
Subset selection algorithms are ubiquitous in AI-driven applications, including, online recruiting portals and image search engines, so it is imperative that these tools are not discriminatory on the basis of protected attributes such as gender or race.
1 code implementation • 21 Oct 2020 • L. Elisa Celis, Chris Hays, Anay Mehrotra, Nisheeth K. Vishnoi
Our main result is that, when the panel is constrained by the Rooney Rule, their implicit bias roughly reduces at a rate that is the inverse of the size of the shortlist--independent of the number of candidates, whereas without the Rooney Rule, the rate is inversely proportional to the number of candidates.
no code implementations • 15 Jul 2020 • Vijay Keswani, L. Elisa Celis
Discussions on Twitter involve participation from different communities with different dialects and it is often necessary to summarize a large number of posts into a representative sample to provide a synopsis.
1 code implementation • 8 Jun 2020 • L. Elisa Celis, Lingxiao Huang, Vijay Keswani, Nisheeth K. Vishnoi
We present an optimization framework for learning a fair classifier in the presence of noisy perturbations in the protected attributes.
no code implementations • 23 Jan 2020 • L. Elisa Celis, Anay Mehrotra, Nisheeth K. Vishnoi
Implicit bias is the unconscious attribution of particular qualities (or lack thereof) to a member from a particular social group (e. g., defined by gender or race).
1 code implementation • NeurIPS 2019 • Yi Chern Tan, L. Elisa Celis
In this paper, we analyze the extent to which state-of-the-art models for contextual word representations, such as BERT and GPT-2, encode biases with respect to gender, race, and intersectional identities.
1 code implementation • ICML 2020 • L. Elisa Celis, Vijay Keswani, Nisheeth K. Vishnoi
Unlike prior work, it can efficiently learn distributions over large domains, controllably adjust the representation rates of protected groups and achieve target fairness metrics such as statistical parity, yet remains close to the empirical distribution induced by the given dataset.
no code implementations • 29 Jan 2019 • L. Elisa Celis, Vijay Keswani
Motivated by concerns that machine learning algorithms may introduce significant bias in classification models, developing fair classifiers has become an important problem in machine learning research.
1 code implementation • 29 Jan 2019 • L. Elisa Celis, Anay Mehrotra, Nisheeth K. Vishnoi
To prevent this, we propose a constrained ad auction framework that maximizes the platform's revenue conditioned on ensuring that the audience seeing an advertiser's ad is distributed appropriately across sensitive types such as gender or race.
no code implementations • 29 Jan 2019 • L. Elisa Celis, Vijay Keswani
We develop a novel approach that takes as input a visibly diverse control set of images and uses this set to select a set of images of people in response to a query.
no code implementations • 24 Jun 2018 • Sayash Kapoor, Vijay Keswani, Nisheeth K. Vishnoi, L. Elisa Celis
We present a prototype for a news search engine that presents balanced viewpoints across liberal and conservative articles with the goal of de-polarizing content and allowing users to escape their filter bubble.
4 code implementations • 15 Jun 2018 • L. Elisa Celis, Lingxiao Huang, Vijay Keswani, Nisheeth K. Vishnoi
The main contribution of this paper is a new meta-algorithm for classification that takes as input a large class of fairness constraints, with respect to multiple non-disjoint sensitive attributes, and which comes with provable guarantees.
no code implementations • 23 Feb 2018 • L. Elisa Celis, Sayash Kapoor, Farnood Salehi, Nisheeth K. Vishnoi
Personalization is pervasive in the online space as it leads to higher efficiency and revenue by allowing the most relevant content to be served to each user.
1 code implementation • ICML 2018 • L. Elisa Celis, Vijay Keswani, Damian Straszak, Amit Deshpande, Tarun Kathuria, Nisheeth K. Vishnoi
Sampling methods that choose a subset of the data proportional to its diversity in the feature space are popular for data summarization.
no code implementations • NeurIPS 2018 • Farnood Salehi, Patrick Thiran, L. Elisa Celis
Ideally, we would update the decision variable that yields the largest decrease in the cost function.
1 code implementation • 27 Oct 2017 • L. Elisa Celis, Lingxiao Huang, Nisheeth K. Vishnoi
Multiwinner voting rules are used to select a small representative subset of candidates or items from a larger set given the preferences of voters.
no code implementations • 8 Aug 2017 • Farnood Salehi, L. Elisa Celis, Patrick Thiran
This approach for sampling datapoints is general, and can be used in conjunction with any algorithm that uses an unbiased gradient estimation -- we expect it to have broad applicability beyond the specific examples explored in this work.
no code implementations • 7 Jul 2017 • L. Elisa Celis, Nisheeth K. Vishnoi
Personalization is pervasive in the online space as, when combined with learning, it leads to higher efficiency and revenue by allowing the most relevant content to be served to each user.
no code implementations • 8 May 2017 • L. Elisa Celis, Peter M. Krafft, Nisheeth K. Vishnoi
Finally, we observe that our infinite population dynamics is a stochastic variant of the classic multiplicative weights update (MWU) method.
2 code implementations • 22 Apr 2017 • L. Elisa Celis, Damian Straszak, Nisheeth K. Vishnoi
Ranking algorithms are deployed widely to order a set of items in applications such as search engines, news feeds, and recommendation systems.
no code implementations • 14 Apr 2017 • L. Elisa Celis, Farnood Salehi
We provide algorithms for this setting, both for stochastic and adversarial bandits, and show that their regret smoothly interpolates between the regret in the classical bandit setting and that of the full-information setting as a function of the neighbors' exploration.
no code implementations • 23 Oct 2016 • L. Elisa Celis, Amit Deshpande, Tarun Kathuria, Nisheeth K. Vishnoi
However, in doing so, a question that seems to be overlooked is whether it is possible to produce fair subsamples that are also adequately representative of the feature space of the data set - an important and classic requirement in machine learning.
no code implementations • 1 Aug 2016 • L. Elisa Celis, Amit Deshpande, Tarun Kathuria, Damian Straszak, Nisheeth K. Vishnoi
Consequently, we obtain a few algorithms of independent interest: 1) to count over the base polytope of regular matroids when there are additional (succinct) budget constraints and, 2) to evaluate and compute the mixed characteristic polynomials, that played a central role in the resolution of the Kadison-Singer problem, for certain special cases.
1 code implementation • 14 Mar 2016 • L. Elisa Celis, Peter M. Krafft, Nathan Kobe
Domains in which content quality can be defined exogenously and measured objectively are thus needed in order to better assess the design choices of social recommendation systems.