Capturing Time-structures in Earth Observation Data with Gaussian Processes (abstract)

نویسنده

  • Gustavo Camps-Valls
چکیده

In this talk I will summarize our experience in the last years on developing algorithms in the interplay between Physics and Statistical Inference to analyze Earth Observation satellite data. Some of them are currently adopted by ESA and EUMETSAT. I will pay attention to machine learning models that help to monitor land, oceans, and atmosphere through the estimation of climate and biophysical variables. In particular, I will focus on Gaussian Processes, which provide an adequate framework to design models with high prediction accuracy and able to cope with uncertainties, deal with heteroscedastic noise and particular time-structures, to encode physical knowledge about the problem, and to attain self-explanatory models. The theoretical developments will be guided by the challenging problems of estimating biophysical parameters at both local and global planetary scales. Copyright c ⃝2015 for this paper by its authors. Copying permitted for private and academic purposes.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation and Application of the Gaussian-Log Gaussian Spatial Model for Robust Bayesian Prediction of Tehran Air Pollution Data

Air pollution is one of the major problems of Tehran metropolis. Regarding the fact that Tehran is surrounded by Alborz Mountains from three sides, the pollution due to the cars traffic and other polluting means causes the pollutants to be trapped in the city and have no exit without appropriate wind guff. Carbon monoxide (CO) is one of the most important sources of pollution in Tehran air. The...

متن کامل

Scheduling a constellation of agile earth observation satellites with preemption

In this paper, we consider a scheduling problem for a set of agile Earth observation satellites for scanning  different parts of the Earth’s surface. We assume that preemption is allowed to prevent repetitive images and develop four different preemption policies. Scheduling is done for the imaging time window and transmission time domain to the Earth stations as well. The value of each picture ...

متن کامل

Approximate inference in continuous time Gaussian-Jump processes

We present a novel approach to inference in conditionally Gaussian continuous time stochastic processes, where the latent process is a Markovian jump process. We first consider the case of jump-diffusion processes, where the drift of a linear stochastic differential equation can jump at arbitrary time points. We derive partial differential equations for exact inference and present a very effici...

متن کامل

Asymptotic receiver structures for joint maximum likelihood time delay estimation and channel identification using Gaussian signals

received discrete-time Gaussian signals. Using two different methods, possible structures for the joint maximum likelihood (ML) estimator are proposed, when the observation interval is long compared to both the delay to estimate and the correlation time of the various random processes involved. These structures generalize the cross-correlation method with prefiltering that implements the ML est...

متن کامل

Infinite Shift-invariant Grouped Multi-task Learning for Gaussian Processes

Multi-task learning leverages shared information among data sets to improve the learning performance of individual tasks. The paper applies this framework for data where each task is a phase-shifted periodic time series. In particular, we develop a novel Bayesian nonparametric model capturing a mixture of Gaussian processes where each task is a sum of a group-specific function and a component c...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015