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In VBA, if I understand correctly, emptiness means that a variant has not been initialized, i.e., it is the default value of a variant before an assignment.

There appear to be four ways to test if a variant is empty:

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I've converted a Keras model for use with OpenVino. The original Keras model used sigmoid to return scores ranging from 0 to 1 for binary classification. After converting the model for use with OpenVino, the scores are all near 0.99 for both classes but seem slightly lower for one of the classes.

For example, test1.jpg and test2.jpg (from opposite classes) yield scores of 0.00320357 and 0.9999, respectively.

With OpenVino, the same images yield scores of 0.9998982 and 0.9962392, respectively.

Edit* One suspicion is that the input array is still accepted by the OpenVino model but is somehow changed in shape or "scrambled" and therefore is never a match for class one? In other words, if you fed it random noise, the score would also always be 0.9999. Maybe I'd have to somehow get the OpenVino model to accept the original shape (1,180,180,3) instead of (1,3,180,180) so I don't have to force the input into a different shape than the one the original model accepted? That's weird though because I specified the shape when making the xml and bin for openvino:

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I created a new springboot project, the directory structure of the project is as follows： enter image description here The yml configuration is as follows:

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I am trying to add spacing between buttons in a Bootstrap button group. I understand this is possible by using a button toolbar instead, however, I cannot work out how to make that justified (ie. fill a width of 100%). This is a feature I need and, as far as I can work out, is only possible with button groups.

The code below creates a bar of buttons that are attached to one another with no spacing. I would like them to appear inline as individual buttons, spaced equally, with widths proportionate to the length of the text.

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I'm using a small laptop to copy video files on location to multiple memory sticks (~8GB). The copy has to be done without supervision once it's started and has to be fast.

I've identified a serious boundary to the speed, that when making several copies (eg 4 sticks, from 2 cameras, ie 8 transfers * 8Gb ) the multiple Reads use a lot of bandwidth, especially since the cameras are USB2.0 interface (two ports) and have limited capacity.

If I had unix I could use tar -cf - | tee tar -xf /stick1 | tee tar -xf /stick2 etc which means I'd only have to pull 1 copy (2*8Gb) from each camera once, on the USB2.0 interface.

The memory sticks are generally on a hub on the single USB3.0 interface that is driven on different channel so write sufficently fast.

For reasons, I'm stuck using the current Win10 PowerShell.

I'm currently writing the whole command to a string (concatenating the various sources and the various targets) and then using Invoke-Process to execute the copy process while I'm entertaining and buying the rounds in the pub after the shoot. (hence the necessity to be afk).

I can tar cf - | tar xf a single file, but can't seem to get the tee functioning correctly.

I can also successfully use the microSD slot to do a single cameras card which is not as physically nice but is fast on one cameras recording, but I still have the bandwidth issue on the remaining camera(s). We may end up with 4-5 source cameras at the same time which means the read once, write many, is still going to be an issue.

Edit: I've just advanced to play with Get-Content -raw | tee \stick1\f1 | tee \stick2\f1 | out-null . Haven't done timings or file verification yet....

Edit2: It seems like the Get-Content -raw works properly, but the functionality of PowerShell pipelines violates two of the fundamental Commandments of programming: A program shall do one thing and do it well, Thou shalt not mess with the data stream. For some unknown reason PowerShell default (and only) pipeline behaviour always modifies the datastream it is supposed to transfer from one stream to the next. Doesn't seem to have a -raw option nor does it seem to have a $session or $global I can set to remedy the mutilation.

How do PowerShell people transfer raw binary from one stream out, into the next process?

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I am trying to build an SVG something similar to:

The strokes are completely dynamic, as they come from an API. I want to place the strokes at the points received (as array of percentage values). Need not be in order and the distance between 2 strokes need not be equal

I am trying with something like below but not able to come up with a logic for the placement of strokes. I tried to follow the answer here: https://stackoverflow.com/a/66076805/6456247 but the distance between strokes here are equal. In my scenario, they are not consistent.

Fiddle Link: https://jsfiddle.net/puq8v594/2/

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I'm looking for a way to store a small multidimensional set of data which is known at compile time and never changes. The purpose of this structure is to act as a global constant that is stored within a single namespace, but otherwise globally accessible without instantiating an object.

If we only need one level of data, there's a bunch of ways to do this. You could use an enum or a class or struct with static/constant variables:

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What I am trying to do seems simple- but after 2 days of searching I have decided to post my first question here to see if anyone can help.

I have a dataframe(df) of 5 variables and 250,000 rows. Sample:

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I have a sparse 60000x10000 matrix M where each element is either a 1 or 0. Each column in the matrix is a different combination of signals (ie. 1s and 0s). I want to choose five column vectors from M and take the Hadamard (ie. element-wise) product of them; I call the resulting vector the strategy vector. After this step, I compute the dot product of this strategy vector with a target vector (that does not change). The target vector is filled with 1s and -1s such that having a 1 in a specific row of the strategy vector is either rewarded or penalised.

Is there some heuristic or linear algebra method that I could use to help me pick the five vectors from the matrix M that result in a high dot product? I don't have any experience with Google's OR tools nor Scipy's optimization methods so I am not too sure if they can be applied to my problem. Advice on this would be much appreciated! :)

Note: the five column vectors given as the solution does not need to be the optimal one; I'd rather have something that does not take months/years to run.

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