MIDAS | Anomaly Detection on Dynamic Graphs | Predictive Analytics library

The minimum is not a single point but as a rule a larger area. argmin finds the first x and y (top left corner) of this area:

In case of multiple occurrences of the minimum values, the indices corresponding to the first occurrence are returned.

What you need is the center of this minimum region. You can find it using moments. Sometimes you have multiple minimum regions for instance in frame107.png. In this case we take the biggest one by finding the contour with the largest area.

We still have some jumping markers as sometimes you have a tiny area that is the minimum, e.g. in frame25.png. Therefore we use a minimum area threshold min_area, i.e. we don't use the absolute minimum region but the region with the smallest value from all regions greater or equal that threshold.

Client datasets are specialized datasets that hold all their data in memory. The support for manipulating the data they store in memory is provided by midaslib.dcu or midas.dll. The format that client datasets use for storing data is self-contained and easily transported, which allows client datasets to...read the rest here.

You forget to check if the value of node1 and node2 are the same.

• If they are not the same, it means these two trees are not same.
• If they are the same, we keep on checking if their left and right child are the same.

I feel your question is more about how to do nowcasting for cointegrated variables, then let's see later how to implement it in R.

In general, according to Granger's representation theorem, cointegrated variables can be represented in multiple forms:

• Long term relationship: contemporaneous values of y and x

• VECM representation: (diff of) y and x explained by (diff of) lags, and error-correction term at previous period.

So I am not sure how you would do nowcasting in the VECM representation, since it includes only past values? I can see two possibilities:

1. Do nowcasting based on the long-term relationship. So you just run standard OLS, and predict from there.

2. Do nowcasting based on a structural VECM, where you add contemporaneous values of the variables you know (X). In R, you would do this package urca, you need though to check whether the predict function will allow you to add know X values.

Regarding the long-term relationship approach, what is interesting is that you can obtain forecasts for X and Y based on the VECM (without known X) and from the LT with known X. This gives you a way to have an idea of the accuracy of your model (comparing known and predicted X), which you could use to create a forecast averaging scheme for your Y?

After updating a signal, call runAsync() to invoke an update. The behavior that you see where the view updates when you hover over it comes from the fact that Vega listens to hover events and invokes an updates.

You can use itertools.groupby with recursion:

From this link, we can know that the object-fit CSS property not support IE browser.

As a workaround, you could display the image as a container background image, then, using the CSS background-size, background-repeat and background-position Property to resize the Image and set the position.

More details about CSS background property, please check the following link.

CSS background Property

Besides, you could also refer to this sample, and use Javascript to detect the browser, then reset the CSS style.

Delphi determines where to load Midas.Dll from by examining a registry key. Take a look at the source code of CheckDBClient in DSIntf.Pas which should be in your [Delphi\Source\VCL folder.

You'll see that this CheckDBClient routine generates the exception you are seeing, so there's really no need to check whether Midas.Dll is loaded, though you could use the method Remy suggests in a comment to check the value of the global var DbClientHandle which is initialized (or not) by CheckDbClient.

CheckDBClient is called via CreateDbClientObject in the call to TCustomClientDataSet.CreateDSBase in DBClient.Pas.

To fix the error, register Midas.Dll from a command prompt using Delphi's TRegSvr.Exe or Windows' RegSvr32. Or you could register it yourself in your project's start-up code. Delphi comes with the source code of TRegSvr (check your [delphi]\demos\activex folder) so you can see for yourself how it does the registration process.

TL;DR You are just seeing the VS debugger breaking on exceptions.

You may be understanding the Visual Studio Debugger's (inherently confusing) terminology user-unhandled exception to mean that the executing codebase as a whole is not handling the exception; this is not the case.

User-unhandled exception in this case means that the exception is first handled other than by your code - here, by the Polly policy.

First, Visual Studio divides code you are debugging into 'my code' aka 'user code', and 'non-user code'. In your scenario, Polly and the Geocoder library will be classified 'non-user code'.

Second, by default, the Visual Studio debugger breaks[+] on exceptions handled by 'non-user code' (but using this potentially confusing and alarming term 'user-unhandled'!).

Visual Studio breaks[+] by default so that you can see the line that triggered the exception as it happened (even if subsequent code will handle it...). So, it sounds (dpdg on debugger settings) as if you are seeing Visual Studio breaking, even though the exception will be handled as configured by the Polly policy. Just press F5/Continue in the debugger, and the subsequent code will resume.

You can also change this behaviour[+] by following the instructions in this article under the heading Tell the debugger to continue on user-unhandled exceptions.

You can further satisfy yourself the Polly policy is working by examining the behaviour of the line System.Diagnostics.Debug.WriteLine("Exception being retried" + exception);. You should see output from that line - or see it hit if you set a breakpoint on it - if retries are being invoked.

Finally, a Polly retry policy rethrows any final exception if all configured retries have been exhausted. This is intentional - to indicate that eventuality - not a failure.

You correctly have a try { ... } catch (MessageProcessingException ex) { ... } for this, but the debugger may again misleadingly label that final exception 'user-unhandled' - even though you have a try-catch for it - due to its initially being caught by Polly.