Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Outputs-given-inputs

The purely molecular communication channel [9,38,46-48], with p defining its input signal, is devoid of any reference (history) of the chemical bond formation and generates the average noise index of the molecular IT bond covalency, measured by the conditional entropy S(b system outputs given inputs ... [Pg.9]

As we have already mentioned in Section 2, in OCT the complementary quantities characterizing the average noise (conditional entropy of the channel output given input) and the information flow (mutual information in the channel output and input) in the diatomic communication system defined by the conditional AO probabilities of Eq. (48) provide the overall descriptors of the fragment bond covalency and ionicity, respectively. Both molecular and promolecular reference (input) probability distributions have been used in the past to determine the information index characterizing the displacement (ionicity) aspect of the system chemical bonds [9, 46-48]. [Pg.40]

This electron delocalization is embodied in the conditional probabilities of the outputs-given-inputs, P(ftla) = [PiXj xd = which define the forward ... [Pg.74]

Learning in the context of a neural network is the process of adjusting the weights and biases in such a manner that for given inputs, the correct responses, or outputs are achieved. Learning algorithms include ... [Pg.350]

A sequence of tasks which combine the use of people, machines, methods, tools, environment, instrumentation, and materials to convert given inputs into outputs of added value. [Pg.560]

Just as was the case with simple perceptrons, the multi-layer perceptron s fundamental problem is to learn to associate given inputs with desired outputs. The input layer consists of as many neurons as are necessary to set up some natural... [Pg.540]

Fig. 1-3. The continuous x-ray spectrum. Note that the short-wavelength limit (Eq. 1-2) is 0.248 A for 50 kv and 0.620 A for 20 kv. A spectrum from a rectified a-c tube would have the peak displaced to the right and for a given input energy would have less x-ray output. (After Ulrey, Phys. Rev. [2], 11, 401.)... Fig. 1-3. The continuous x-ray spectrum. Note that the short-wavelength limit (Eq. 1-2) is 0.248 A for 50 kv and 0.620 A for 20 kv. A spectrum from a rectified a-c tube would have the peak displaced to the right and for a given input energy would have less x-ray output. (After Ulrey, Phys. Rev. [2], 11, 401.)...
Special considerations are required in estimating paraimeters from experimental measurements when the relationship between output responses, input variables and paraimeters is given by a Monte Carlo simulation. These considerations, discussed in our first paper 1), relate to the stochastic nature of the solution and to the fact that the Monte Carlo solution is numerical rather than functional. The motivation for using Monte Carlo methods to model polymer systems stems from the fact that often the solution... [Pg.282]

The output-activity map. A trained Kohonen network yields for a given input object, X, one winning unit, whose weight vector, is closest (as defined by the criterion used in the learning procedure) to x,. However, X may be close to the weight vectors, w, of other units as well. The output yj of the units of the map can also be defined as ... [Pg.690]

D is the similarity measure as used in the training procedure. This results in a map as in Fig.44.26a. This map allows the inspection of regions (neighbouring neurons) that have a similar weight vector as a given input x,. Note that each input x, yields a different output activity map. [Pg.690]

As introduced earlier, inputs can be transformed to reduce their dimensionality and extract more meaningful features by a variety of methods. These methods perform a numeric-numeric transformation of the measured input variables. Interpretation of the transformed inputs requires determination of their mapping to the symbolic outputs. The inputs can be transformed with or without taking the behavior of the outputs into account by univariate and multivariate methods. The transformed features or latent variables extracted by input or input-output analysis methods are given by Eq. (5) and can be used as input to the interpretation step. [Pg.45]

The chemical engineering undergraduate spends most of his time sizing equipment. Usually in the problems assigned the type of equipment to be used is specified. For a distillation column the student would be told whether it is a bubble cap, a sieve plate, a valve tray, a packed column, or something else, and then asked to size it for a desired separation. In other cases he would be given the size of the specific equipment and asked to determine what the output would be for a given input. [Pg.106]

The initial equation for Fq(X) will represent output given for the actual input starting at instruction 1. Each program variable is by definition assumed to be specified before it is computed on thus any initial value assigned to it is irrelevant. So the initial equation is ... [Pg.232]

First we discuss a version of the verification procedure which provides a sufficient condition for partial correctness - if the procedure gives a positive answer, then tie program is indeed partially correct for the given input and output criteria. However, the condition is not necessary - the program can be partially correct yet no choice of inductive assertions will make the procedure "work". This leads us to the complete procedure, which is rather more complex and lengthy. [Pg.285]

This enables one to detail an interactive verification procedure for flowchart based programs such that if the procedure returns a yes answer, then the program is indeed partially correct with respect to the given input and output criteria. The catch, discussed in Chapter V and justified in Chapter VI, is that it may not be possible to find I In fact, there can be no mechanical procedure which, when I exists, will eventually locate it and establish the validity of the interpreted formula. [Pg.340]

If the fulcrum setting was changed so that a level change of 2 in, or 50% of the input, causes the full 3-in stroke, or 100% of the output, the proportional band would become 50%. The proportional band of a proportional controller is important because it determines the range of outputs for given inputs. [Pg.131]

Let us review what we did with the depression example so far. First, we conjectured a taxon and three indicators. Next, we selected one of these indicators (anhedonia) as the input variable and two other indicators (sadness and suicidality) as the output variables. Input and output are labels that refer to a role of the indicator in a given subanalysis. We cut the input indicator into intervals, hence the word Cut in the name of the method (Coherent Cut Kinetics), and we looked at the relationship between the output indicators. Specifically, we calculated covariances of the output indicators in each interval, hence the word Kinetics —we moved calculations from interval to interval. Suppose that after all that was completed, we find a clear peak in the covariance of sadness and suicidality, which allows us to estimate the position of the hitmax and the taxon base rate. What next Now we need to get multiple estimates of these parameters. To achieve this, we change the... [Pg.42]

The types of problems capable of being solved with the following regression methods are defined by the manner in which each of the regression methods works. The basic premise is that a method is given input variables (bioactivities and descriptors) and in turn the method produces output variables (coefficients and a constant). These methods work best when information about the system of interest is known and inferences can be made about the problem being solved. This can only be done if there is confidence that a relationship exists between the known input data and the unknown output data before these methods are utilized if there is no relationship, then the model will be useless. [Pg.169]

When we use a tracer study to develop reactor parameters for an environmental system, we are inherently assuming that the details of the transport processes are not essential to us. All that we have is an input and an output, and any sets of reactors that will simulate the output for a given input are acceptable. What you can learn about the system from a reactor model depends on your understanding of the transport processes and how they are simulated by reactor models. [Pg.132]

Here the frequency spectra of the output and input signals are given by Fc(co) and V (co), respectively, and the complex filter transfer function is given by... [Pg.52]


See other pages where Outputs-given-inputs is mentioned: [Pg.4]    [Pg.163]    [Pg.163]    [Pg.164]    [Pg.166]    [Pg.58]    [Pg.58]    [Pg.76]    [Pg.4]    [Pg.163]    [Pg.163]    [Pg.164]    [Pg.166]    [Pg.58]    [Pg.58]    [Pg.76]    [Pg.441]    [Pg.541]    [Pg.548]    [Pg.190]    [Pg.863]    [Pg.63]    [Pg.67]    [Pg.51]    [Pg.71]    [Pg.390]    [Pg.212]    [Pg.288]    [Pg.445]    [Pg.137]    [Pg.179]    [Pg.331]    [Pg.186]    [Pg.298]    [Pg.107]    [Pg.135]    [Pg.204]    [Pg.148]   
See also in sourсe #XX -- [ Pg.74 ]




SEARCH



Givens

Input/output

© 2024 chempedia.info