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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Convergence
Convergence Key Features
Convergence Examples and Code Snippets
def conjugate_gradient(operator,
rhs,
preconditioner=None,
x=None,
tol=1e-5,
max_iter=20,
name='conjugate_gradie
def conjugate_gradient(
spd_matrix: np.ndarray,
load_vector: np.ndarray,
max_iterations: int = 1000,
tol: float = 1e-8,
) -> Any:
"""
Returns solution to the linear system np.dot(spd_matrix, x) = b.
Input:
spd_matr
def enable_tensor_float_32_execution(enabled):
"""Enable or disable the use of TensorFloat-32 on supported hardware.
[TensorFloat-32](https://blogs.nvidia.com/blog/2020/05/14/tensorfloat-32-precision-format),
or TF32 for short, is a math mode
Community Discussions
Trending Discussions on Convergence
QUESTION
I am trying to extract random effect correlation parameters from an lmer output.
This is my model:
...ANSWER
Answered 2021-Jun-15 at 12:38You want to use lme4::VarCorr
to extract those values. Here is an example.
QUESTION
I am trying to turn my edge labels into node labels, in order to predict unlabeled nodes. Currently the dataset has edge_labels but I would need to have each node (ID) getting exactly one node_label:
The code I am using is the following:
...ANSWER
Answered 2021-Jun-11 at 20:38You have nodes that are only appearing in the Target
column, so you need to incorporate that column when finding all unique nodes. I did this by concatenating the two columns (along with Label
), grouping by node ID while summing the Label
values, and then replacing summed labels with 1 if the sum was > 0:
QUESTION
I am attempting to write a code for Newton's Method for nonlinear systems in Python. My g function is a 5x1 matrix and the jacobian (derivative matrix) of this is a 5x5 matrix. The vector for the initial y values (y0) is also a 5x1. i keep on getting the error
...ANSWER
Answered 2021-Jun-10 at 14:39The dimensions of y0
and g
seems to be wrong. Reduce them by one dimension:
QUESTION
I am trying to use Torch for Label Propagation. I have a dataframe that looks like
...ANSWER
Answered 2021-Jun-10 at 10:00For other readers here, it seems like this is the implementation being asked about in this question.
The method you are using to try to predict labels works with labels for nodes, not edges. To visualize this, I plotted your example data and colored the plot by your Weight
and Label
columns (code to produce plot appended below) where Weight
is the line thickness of the edge and Label
is the color:
In order to use this method, you will need to produce data that looks like this, where each node (denoted by ID
) gets exactly one node_label
:
QUESTION
I tried to apply zeller's convergence simplified method to get day name from a user input date.
simplified algorithm from
...ANSWER
Answered 2021-Jun-08 at 19:21You need to fetch the data from the year variable twice, year @ 100 ...
. I think after that ?adaptday
will work. There is forth word within \ n lo hi -- flag ; flag is True if lo <= n < hi
for checking numbers within ranges,
In Forth it's unusual to use so many variables. The values are normally stored on the stack. j
as a variable could override the j used as the outer do loop counter. I've seen k used for the next outer loop too!!
I'd implement it something like this. I can then run the words in the console with stack input to see what is happening to help debug.
QUESTION
I have a data having 3 features and 1 target variable. I am trying to use gradient descent and later minimize the RMSE
While trying to run the code, I am getting nan as the cost/error term Tried a lot of methods but can't figure it out.
Can anyone please tell me where I am going wrong with the calculation.
Here's the code:
m = len(y)
ANSWER
Answered 2021-Jun-07 at 19:01The only reasonable solution which we came up was since the cost was high.. it was not possible to use this approach for this solution. We tried using a different approach like simple linear regression and it worked.
QUESTION
I am an engineering student and I have to turn in projects that run code for simulations. The calculations are all carried out in Python, but the derivations/ setup is done on paper and included in the report. I sometimes find myself copying and pasting code for repeat graphs or numerical simulations, so I want to write functions for these (trying to be better about DRY).
When writing functions to do these things, I'm worried that I'm "hiding" to much of the code behind the functions. For example, this function would plot two simulations differing only by tolerance level. This would be used to check for convergence in a numerical simulation of an ode.
...ANSWER
Answered 2021-Jun-07 at 16:13In my experience the dry principle is more important when writing libraries and code that you want to reuse. However my experience is that if you want to make a report then sometimes making things to dry can actually make things harder to maintain. I.e. sometimes you want to be able to change an individual graph/plot/piece of data in one place without it affecting the rest of the report. It takes a bit of practice and experience to find out what works best for you. In this particular use case be less focussed on following the DRY rule then when writing a library or an application.
Additionally if I had to make such a report and the situation would allow it. I would make in in a Jupyter notebook. Here you can nicely mix code with text and graphical output.
QUESTION
Getting this error for "mvn clean validate". Is this issue the same as https://github.com/googleapis/java-storage/issues/133? Can someone please help to resolve this? I haven't changed pom.xml.
...ANSWER
Answered 2021-Jun-01 at 10:41You either need to disable the dependencyConvergence check in the POM, or you need to add an entry to the section of your POM which contains the version of
error_prone_annotations
that you want to use.
QUESTION
I'm trying to fit a generalized linear mixed model with glmmTMB
ANSWER
Answered 2021-May-27 at 19:42There are a number of issues here.
The proximal problem is that you have a (near) singular fit: glmmTMB
is trying to make the variance zero (5.138e-08 is as close as it can get). Because it fits on a log-variance (actually log-standard-deviation) scale, this means that it's trying to go to -∞, which makes the covariance matrix of the parameters impossible to estimate.
The main reason this is happening is that you have a very small number of groups (3) in your random effect (experiment
).
These are extremely common issues with mixed models: you can start by reading ?lme4::isSingular
and the relevant section of the GLMM FAQ.
The simplest solution would be to treat experiment
as a fixed effect, in which case you would no longer have a mixed model and you could back to plain glm()
.
Another slightly worrying aspect of your code is the response variable cbind(SARA_ph58, 1)
. If SARA_ph58
is a binary (0/1) variable you can use just SARA_ph58
. If you pass a two-column matrix as you are doing, the first column is interpreted as the number of successes and the second column as the number of failures; it looks like you may have been trying to specify that the total number of trials for each observation is 1 (again, if this is the case you can just use SARA_ph58
as the response).
One final note is that lme4::glmer
is a little more tolerant of singular fits than glmmTMB
.
QUESTION
I would like to check the convergence of Sobol' sensitivity indices, using the sensobol library, by re-computing the sensitivity indices using sub-samples of decreasing size extracted from the original sample.
Here, I present an example code using the Ishigami function as model. Since computing the model output takes very long with the model I actually use, I want to avoid recomputing the model output for different sample sizes, but want to use sub-samples of my overall sample for this check.
I have written code that runs through, however, it seems that the result is 'not correct', as soon as the sample size is not equal the initial sample size.
Inital set-up
...ANSWER
Answered 2021-May-26 at 17:52The results do not make sense because you are sampling without considering the ordering of the sample matrix. Try the following
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