Search Results for author: Jukka-Pekka Onnela

Found 13 papers, 3 papers with code

ABCpy: A High-Performance Computing Perspective to Approximate Bayesian Computation

1 code implementation13 Nov 2017 Ritabrata Dutta, Marcel Schoengens, Lorenzo Pacchiardi, Avinash Ummadisingu, Nicole Widmer, Jukka-Pekka Onnela, Antonietta Mira

Further, ABCpy enables ABC experts to easily develop new inference schemes and evaluate them in a standardized environment and to extend the library with new algorithms.

Computation

Bayesian Inference of Spreading Processes on Networks

no code implementations26 Sep 2017 Ritabrata Dutta, Antonietta Mira, Jukka-Pekka Onnela

Although the underlying processes of transmission are different, the network approach can be used to study the spread of pathogens in a contact network or the spread of rumors in an online social network.

Bayesian Inference

The Social Bow Tie

no code implementations11 Oct 2017 Heather Mattie, Kenth Engø-Monsen, Rich Ling, Jukka-Pekka Onnela

We also investigate what aspects of the bow tie are most predictive of tie strength in two distinct social networks: a collection of 75 rural villages in India and a nationwide call network of European mobile phone users.

Topics in social network analysis and network science

no code implementations31 Mar 2014 A. James O'Malley, Jukka-Pekka Onnela

This chapter introduces statistical methods used in the analysis of social networks and in the rapidly evolving parallel-field of network science.

Physics and Society Social and Information Networks

A systematic review of smartphone-based human activity recognition for health research

no code implementations7 Oct 2019 Marcin Straczkiewicz, Peter James, Jukka-Pekka Onnela

We extracted information on smartphone body location, sensors, and physical activity types studied and the data transformation techniques and classification schemes used for activity recognition.

Human Activity Recognition

Communities in Networks

1 code implementation22 Feb 2009 Mason A. Porter, Jukka-Pekka Onnela, Peter J. Mucha

We survey some of the concepts, methods, and applications of community detection, which has become an increasingly important area of network science.

Physics and Society Statistical Mechanics Computers and Society Discrete Mathematics Statistics Theory Adaptation and Self-Organizing Systems Computational Physics Statistics Theory

Cost-based feature selection for network model choice

no code implementations19 Jan 2021 Louis Raynal, Till Hoffmann, Jukka-Pekka Onnela

This approach reduced the computational cost by a factor of 50 without affecting classification accuracy.

feature selection Model Selection

Minimising the Expected Posterior Entropy Yields Optimal Summary Statistics

1 code implementation6 Jun 2022 Till Hoffmann, Jukka-Pekka Onnela

Extracting low-dimensional summary statistics from large datasets is essential for efficient (likelihood-free) inference.

Bayesian Inference Dimensionality Reduction +1

Nonparametric Additive Value Functions: Interpretable Reinforcement Learning with an Application to Surgical Recovery

no code implementations25 Aug 2023 Patrick Emedom-Nnamdi, Timothy R. Smith, Jukka-Pekka Onnela, Junwei Lu

Under this approach, we are able to locally approximate the action-value function and retrieve the nonlinear, independent contribution of select features as well as joint feature pairs.

Clinical Knowledge reinforcement-learning

Flexible Bayesian Inference on Partially Observed Epidemics

no code implementations6 Nov 2023 Maxwell H. Wang, Jukka-Pekka Onnela

In this paper, we consider Bayesian inference on the spreading parameters of an SIR contagion on a known, static network, where information regarding individual disease status is known only from a series of tests (positive or negative disease status).

Bayesian Inference

kNN Algorithm for Conditional Mean and Variance Estimation with Automated Uncertainty Quantification and Variable Selection

no code implementations2 Feb 2024 Marcos Matabuena, Juan C. Vidal, Oscar Hernan Madrid Padilla, Jukka-Pekka Onnela

In this paper, we introduce a kNN-based regression method that synergizes the scalability and adaptability of traditional non-parametric kNN models with a novel variable selection technique.

Computational Efficiency regression +2

Deep Learning Framework with Uncertainty Quantification for Survey Data: Assessing and Predicting Diabetes Mellitus Risk in the American Population

no code implementations28 Mar 2024 Marcos Matabuena, Juan C. Vidal, Rahul Ghosal, Jukka-Pekka Onnela

The objectives of this paper are: (i) To propose a general predictive framework for regression and classification using neural network (NN) modeling, which incorporates survey weights into the estimation process; (ii) To introduce an uncertainty quantification algorithm for model prediction, tailored for data from complex survey designs; (iii) To apply this method in developing robust risk score models to assess the risk of Diabetes Mellitus in the US population, utilizing data from the NHANES 2011-2014 cohort.

Uncertainty Quantification

Accounting for contact network uncertainty in epidemic inferences

no code implementations1 Apr 2024 Maxwell H. Wang, Jukka-Pekka Onnela

However, in realistic settings, the observed data often serves as an imperfect proxy of the actual contact patterns in the population.

Bayesian Inference

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