Sentences with phrase «model parameters were»

In order to estimate this, model parameters were used to score the data.

Samples of model parameters were written out every 50th cycle, resulting in 500 samples per chain.

Model parameters were estimated using a finite amount of data and are therefore subject to estimation error.

For models, such as SMR, where the distribution of the model parameters is unknown, permutation test and stability selection are typically used to control for false positives.

The model parameters are fit by treating each of the six series as a stochastic realization of the stochastic measurement process.

Uncertainty in model response is investigated using a perturbed physics ensemble in which model parameters are set to alternative values considered plausible by experts in the relevant parameterization schemes.»

«Perturbed physics» means that model parameters are varied across their range of physical uncertainty.

My experience tells me that if the calibration period isn't representative of the extended dynamic regime then the model parameters aren't appropriate for the «forward mode» predictions.

Uncertainty in model parameters is not the same as natural climate variability, unless the parameters are stochastic time series.

Many physical modelers, and especially climate modelers, seems to think that as long as their models are «science - based» then there is no need to account for uncertainty in their outputs, notwithstanding that the model parameters are tuned with data, and that aspects of these models are likely to be ill posed (highly sensitive to small perturbations in the values assigned to parameters).

A visual depiction of the results is provided in Fig. 2 and a detailed overview of the effect sizes and model parameters is provided in Table 2.

So the first questions is what is the model parameter we are seeking to update.

As recommended by Preacher and Hayes [21], significance of effects and model parameters was assessed using bias - corrected and accelerated bootstrap confidence intervals (the data were resampled 1,000 times).

In perturbed physics projections, «a single model structure is used and perturbations are made to uncertain physical parameters within that structure...» [5] That is, a perturbed physics experiment shows the variation in climate projections as model parameters are varied step-wise across their physical uncertainty.

The model parameters are the standard deviation of the white noise, the length of the trailing chain and the (fixed) factors to apply at each lag.

I didn't mean that those models would be chosen that produce best agreement but that those model runs would be used from each model that have the best agreement with base period, when all model parameters are fixed and only the initial state is varied.

This strong agreement depends heavily on inverse modeling, whereby forcing data sets and / or model parameters are selected based upon the agreement between models and the time series of 20th century observations.

The models parameters were estimated using ML.

Not exact matches

Our impression of the structure and parameters of such models as these is that the result of the thought experiment above — a rise in short - term rates in real terms of 1 per cent — looks broadly similar in terms of its bottom line effect on activity.

There are considerable improvements that can be made to the model and we do not run client funds with the exact parameters in the white paper or book.

Develop modeling instincts so modelers know what assumptions are reasonable and likely to result in dependable results, and what parameter ranges are realistic to account for invariable deviations of reality from models.

Where were the preliminary animal testing and computer models establishing some parameters of safety and efficacy for these experiments?

The purpose of Virtual Simulation is to help engineers optimize design parameters before making physical models to test.

Some of the more powerful models can travel well across grass or packed gravel, especially if their rider is well below the scooter's maximum weight parameter.

Its parameters are based on additional detection of the carcinogenic compounds and modeling of groundwater flow, Marguerite Wolffsohn, the town's director of planning, told the board.

«The models have parameters in them that are agnostic, and we try to make them very specific by populating them with measurements from individual patients.»

Current multiverse models agree with observations only if certain parameters are given specific values — if the forces holding matter together were slightly stronger or weaker, for instance, it would be impossible for us to be here to observe the universe.

The researchers ran the model for a broad parameter space for variables that may have been important around 4 billion years ago when the iconic valley networks on the planet's southern highlands were formed.

Further detailed experiments on a wide range of parameters, theoretical modelling and numerical simulation are still needed.

«It's useful in modeling concepts in neuroscience to have a system that will yield a diverse range of behaviors for small changes of a control parameter, as this may help offer some insights about how the same neural tissue displays different responses,» Alonso said, whose research was funded by a fellowship from the Leon Levy Foundation.

Applying the Ising model to their physical lattice, the researchers found that the model predicted a phase transition in response to a change in one parameter, which, in this case, turned out to be gap size.

In effect, they found a connecting parameter which essentially decides whether the model colloid solution will be liquid or glassy: the so - called interaction length.

The researchers are now taking into account new parameters such as altitude or wind effect to improve their mathematical model, so that it can be applied to other sports such as cycling, swimming or canoeing.

«It's the same with model parameters,» he continues.

They should lead to a dynamic modelling platform being set up for the ecosystem, integrating key parameters which are oxygen, wind patterns and Kelvin waves, allowing potential changes in fish stocks to be predicted, particularly anchovy stocks.

«Models need different parameters; sometimes we» — theorists and modelers — «are aware of aspects they haven't discovered.»

«Agent - based modeling is like a video game in the sense that you program certain parameters and rules into your simulation and then let your virtual agents play things out to the logical conclusion,» said Crabtree, who completed her Ph.D. in anthropology at WSU earlier this year.

Prior findings point to only six parameters that describe the development of the universe after the Big Bang with relative accuracy, using what is known as the standard model of cosmology.

Current models agree with observations only if certain parameters take particular values — if the forces holding matter together were stronger or weaker, for instance, the universe would not look the way it does.

So we're taking what we learn from simulating those networks to turn it into a model that captures the main features with only a few parameters.

Parameters such as the penalties size and prosecution costs can be varied in the model.

These models can be mind - bogglingly complex, with the largest nearing one trillion parameters (knobs).

Traditional CAD systems are «parametric,» which means that when engineers design models, they can change properties like shape and size («parameters») based on different priorities.

However, in a more hopeful follow - up study, the students investigated the SIR model applied to a zombie epidemic and introduced new parameters, such as the rate in which zombies might be killed and people having children within the nightmare scenario.

Although many parameters of a neural network are determined during the training process, initial model configurations must be set manually.

The technique is capable of both constraining the optimal parameters of these models as well as statistically selecting the best model from a set.

«It's difficult to do, it's expensive, but it's the only way we can get better parameters for these models,» he says.

One of the key parameters in these simulation models are absolute cross sections, which give the probability of interaction between a single LEE and a target molecule.

«We are currently working on parameter sensitivity analysis and Bayesian calibration of this new model and also on a high resolution regional simulation over the U.S. Corn Belt, all of which would not be possible without the precious computational resources provided by Blue Waters.»

The new model calculates the amount of free hydrogen gas produced and stored beneath the seafloor based on a range of parameters — including the ratio of a site's tectonic spreading rate to the thickness of serpentinized rocks that might be found there.