Sentences with phrase «constraining parameter estimates»

Not exact matches

«I think there's a future in using geologic evidence to constrain these parameters, and maybe improve our estimate of seismic hazard in the Pacific Northwest.»

The most popular observationally - constrained method of estimating climate sensitivity involves comparing data whose relation to S is too complex to permit direct estimation, such as temperatures over a spatio - temporal grid, with simulations thereof by a simplified climate model that has adjustable parameters for setting S and other key climate properties.

Providing you can sufficiently constrain a more primitive model, i.e. ensure that all its parameters can be determined / estimated from observables, I do not see the problem.

«The assessment is supported additionally by a complementary analysis in which the parameters of an Earth System Model of Intermediate Complexity (EMIC) were constrained using observations of near - surface temperature and ocean heat content, as well as prior information on the magnitudes of forcings, and which concluded that GHGs have caused 0.6 °C to 1.1 °C (5 to 95 % uncertainty) warming since the mid-20th century (Huber and Knutti, 2011); an analysis by Wigley and Santer (2013), who used an energy balance model and RF and climate sensitivity estimates from AR4, and they concluded that there was about a 93 % chance that GHGs caused a warming greater than observed over the 1950 — 2005 period; and earlier detection and attribution studies assessed in the AR4 (Hegerl et al., 2007b).»

Testing gender differences, the model in which the parameters were estimated freely was significantly different from the model in which the parameters were constrained to be equal, χ2diff (15, N = 74) = 128.94, p <.05.

In testing gender differences, the model in which the parameters were estimated freely was not significantly different from the model in which the parameters were constrained to be equal, χ2diff (15, N = 74) = 18.86, ns.

The model in which the parameters were estimated freely was significantly different from the model in which the parameters were constrained to be equal, χ2diff (15, N = 74) = 27.36, p <.05.

Three nested models with increased degrees of constraint were compared in multigroup analyses (fathers versus mothers): We specified a first model of configural invariance, in which the parameters (factor loadings, item intercepts, residual variances, factor variances, and covariance) were freely estimated in each group, whereas the factor means were constrained to zero in both groups.

A model with all the structural parameters (direct and indirect effects) constrained to be equal (between the African American and European American groups) was compared to one with all these parameters freely estimated.