Search Results for author: Isaac Skog

Found 11 papers, 2 papers with code

Fusion framework and multimodality for the Laplacian approximation of Bayesian neural networks

no code implementations12 Oct 2023 Magnus Malmström, Isaac Skog, Daniel Axehill, Fredrik Gustafsson

This paper considers the problem of sequential fusion of predictions from neural networks (NN) and fusion of predictions from multiple NN.

Image Classification

On the Relationship Between Iterated Statistical Linearization and Quasi-Newton Methods

no code implementations14 Sep 2023 Anton Kullberg, Martin A. Skoglund, Isaac Skog, Gustaf Hendeby

This letter investigates relationships between iterated filtering algorithms based on statistical linearization, such as the iterated unscented Kalman filter (IUKF), and filtering algorithms based on quasi-Newton (QN) methods, such as the QN iterated extended Kalman filter (QN-IEKF).

Unified Linearization-based Nonlinear Filtering

no code implementations14 Sep 2023 Anton Kullberg, Isaac Skog, Gustaf Hendeby

This letter shows that the following three classes of recursive state estimation filters: standard filters, such as the extended Kalman filter; iterated filters, such as the iterated unscented Kalman filter; and dynamically iterated filters, such as the dynamically iterated posterior linearization filters; can be unified in terms of a general algorithm.

On the validity of using the delta method for calculating the uncertainty of the predictions from an overparameterized model

no code implementations3 Jul 2023 Magnus Malmström, Isaac Skog, Daniel Axehill, Fredrik Gustafsson

The uncertainty in the prediction calculated using the delta method for an overparameterized (parametric) black-box model is shown to be larger or equal to the uncertainty in the prediction of a canonical (minimal) model.

Tightly Integrated Motion Classification and State Estimation in Foot-Mounted Navigation Systems

1 code implementation16 May 2023 Isaac Skog, Gustaf Hendeby, Manon Kok

A framework for tightly integrated motion mode classification and state estimation in motion-constrained inertial navigation systems is presented.

Position

Iterated Filters for Nonlinear Transition Models

no code implementations27 Feb 2023 Anton Kullberg, Isaac Skog, Gustaf Hendeby

A new class of iterated linearization-based nonlinear filters, dubbed dynamically iterated filters, is presented.

Inertial Navigation Using an Inertial Sensor Array

1 code implementation28 Jan 2022 Håkan Carlsson, Isaac Skog, Gustaf Hendeby, Joakim Jaldén

We present a comprehensive framework for fusing measurements from multiple and generally placed accelerometers and gyroscopes to perform inertial navigation.

Numerical Integration

Online Joint State Inference and Learning of Partially Unknown State-Space Models

no code implementations15 Feb 2021 Anton Kullberg, Isaac Skog, Gustaf Hendeby

The method uses an extended Kalman filter approach to jointly estimate the state of the system and learn the unknown system dynamics, via the parameters of the basis function expansion.

Fifteen Years of Progress at Zero Velocity: A Review

no code implementations20 Aug 2020 Johan Wahlström, Isaac Skog

Fifteen years have passed since the publication of Foxlin's seminal paper "Pedestrian tracking with shoe-mounted inertial sensors".

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