Distributions supported on a single point
distribution with point support
Are user accounts on data.stackexchange.com and Stack Exchange two different entities? I tried to search for similar questions, as I always do, but was not able to find one. I just created a new  on Data.Stack Exchange with my existing Google OpenID and it seems to be not associated with my regular Stack Exchange account. Is this by design? and if so, why? Punctuating a quoted question within a quoted statement I'm working on a story, and I find myself faced with something of a quandary.  Specifically, I need to know the proper style for the following:     “I have thousands of them,” the commissioner answered, “but I’ll start with ‘What do you need?’.”   Is it proper form to have both the question mark and period, or should one of them be dropped? Valid US visa on expired passport. Can I travel to the US? Where are my Minecraft saves located? I recently read a lot about neural networks using GRU or LSTM units. There are many easy to use frameworks like tensorflow that do not even require high knowledge about programming. Unfortunately, I never really found good information on how the training of those networks work. Simple backpropagation might probably not work for gated recurrent networks or is just too inefficient for networks with such a high number of variables to learn.  So my question is:  What are the state-of-the-art algorithms used for the initialization and training of neural networks with GRU or LSTM units? I am not looking for frameworks to use, but for initialization and update equations for the internal parameters. I'm trying to rotate the blades of a windmill for an animation but the windmill is already at an angle. When I keyframe it on it's own axis (after pressing control + alt + space) and rotate it the blades spin inwards during the animation before coming back at the end. I've tried locking the other axis but that keeps the blades from rotating back to the right orientation. Also, whenever I rotate the object 360 degrees it turns the 360 into a really small number (0.0001) so it plays forward hallway then backwards (with a 180 degree keyframe halfway). Any help would be appreciated!. Microphone volume at maximum yet too quiet I have got a reasonbly basic desktop microphone, however for reasons that I don't understand it is extremley quiet. I dual boot, both systems run Windows 7, one system is working just fine although the other system, after I restarted the computer a couple of weeks ago, the microphone is now far too quiet.  I've been through the Sound control panel. The correct microphone is selected as the default communication device. The microphone level is set to 100. The microphone is plugged into a sound card, so I uninstalled the audio card (an Asus D1) driver and reinstalled it which made no difference. If I tap the microphone, it does register 5 or 6 green bars in the recording volume monitor. So, does anybody have any suggestions on where to look next? Same gravatar is displayed for different users in the stackexchange.com , under the Top Network Askers in the right side bar.   The red circled image's source (&lt;img src=) are from   https://www.gravatar.com/avatar/?s=18&amp;d=identicon&amp;r=PG&amp;s=30                                ^   Seems the gravatar id is missing here in the image source.  For an example from the list, the user  gravatar id should be    https://www.gravatar.com/avatar/66c66c4d97a7bc3859a85253f003e1fb?s=18&amp;d=identicon&amp;r=PG&amp;s=30   but it is mapped with   https://www.gravatar.com/avatar/?s=18&amp;d=identicon&amp;r=PG&amp;s=30   which caused the display issue. Is it correct to write $\Bbb E[X]$ or $\Bbb E_{\theta}[X]$? Suppose that we observe the discrete random variable $ X = (X_1, \dotsc , X_n)$ with state space S, whose distribution we do not know but we are assuming that its joint p.m.f. belongs to a known family $\{f_θ : θ ∈ Θ\}$. We derive a sufficient statistic $T(X)$.  Is it correct to write $\Bbb E[X]$? If not, why? Would it be more correct to write $\Bbb E_{\theta}[X]$? I updated to Ubuntu 20.04. When I use the default terminal, everything is fine. But if try to use terminator, I cannot use sudo. I get permission denied. Again, only when using terminator.  How can I sudo from the terminator? I really would like to continue to use a terminator.  Edit: I just also noted that it cannot find make either. I guess it's all messed up. I'll try to uninstall it and install again I guess. Bootstrapped confidence intervals: different values at every computation? I am running an ANOVA and computing bootstrapped CIs for my effect sizes. I am using for this the Measures of Effect Size Toolbox for Matlab.  To my surprise, if I re-run the same line of code, i.e. compute the same thing for the same data, the lower&amp;upper margins of the CI are slightly different each time.  I know that bootstrapped CIs are built from permutation analyses based on random generations of distributions. Still, I do not remeber reading anywhere this odd property of CIs of being never twice the same! Do I lose anything converting to DNG? I'd like to convert all my ARW (Sony) files to DNG for several reasons, but the only thing keeping me back from doing it is the fear of losing useful metadata during the conversion. I know that the image it's self is completely safe during the conversion but what about proprietary maker noteS? Will those stay too? And even if they do, are they actually useful and can be actually used by something other then Sony's own RAW converter?  P.S. I'm using Ubuntu so I'd prefer to use KipiPlugins' DNG converter because from what I understand it does everything the Adobe converter does, but if I'm wrong I can use Adobe's instead.  EDIT:  It looks like the LensID does carry over! With the ARW and the DNG files converted by Kipiplugins' built in converter, info is stored as "Exif.Sony.0x___". With Adobe's official converter, it moves the info to more logically named fields in the XMP, such as "LensID" and "Lens".  Now that I've figured it out, I think I might use Adobe's Official converter, just because I prefer how it reorganizes the Exif Data.  I'm not fully convinced though and I'd like to hear others take on all this. Is there a standard naming convention for XML elements? Is there any standard, de facto or otherwise, for XML documents? For example which is the "best" way to write a tag?  &lt;MyTag /&gt; &lt;myTag /&gt; &lt;mytag /&gt; &lt;my-tag /&gt; &lt;my_tag /&gt;   Likewise if I have an enumerated value for an attribute which is better  &lt;myTag attribute="value one"/&gt; &lt;myTag attribute="ValueOne"/&gt; &lt;myTag attribute="value-one"/&gt; How To Make A Solid Object Drop To The Ground Like It Was Liquid How to use SSH to run a local shell script on a remote machine? I have to run a local shell script (windows/Linux) on a remote machine. I have SSH configured on both machine A and B. My script is on machine A which will run some of my code on a remote machine, machine B. The local and remote computers can be either Windows or Unix based system. Is there a way to run do this using plink/ssh? With lots of guides and setup variations all over the internet, I find it confusing which is which to really follow. Normally, in Windows 8 my setup would be install everything in the HDD and use Intel Smart Response for a speedy setup. However as I am new to Linux I really don't know what to do.  My ideal setup would be something similar to this, but I know for a fact that IRST is not available in Linux so what I intend to do is keep the OS files in the SSD instead and keep my media on the larger HDD. A step by step procedure would be extremely helpful.     Edit: I want a system running solely on Ubuntu, with the SSD to speed things up but setting it in such a way that it does not hasten its lifespan.    # /etc/fstab: static file system information.  # # Use 'blkid' to print the universally unique identifier for a  # device; this may be used with UUID= as a more robust way to name devices  # that works even if disks are added and removed. See fstab(5).  #  # &lt;file system&gt; &lt;mount point&gt; &lt;type&gt; &lt;options&gt; &lt;dump&gt; &lt;pass&gt;  # / was on /dev/sda1 during installation  UUID=80289460-5983-4349-8afc-6f3119938ee9 / ext4 errors=remount-ro 0 1   # /files was on /dev/sdb5 during installation  UUID=c1678c88-5100-41bc-8090-7887f1622c7f /files ext4 defaults 0 2   # swap was on /dev/sdb6 during installation  UUID=608e3ec2-c76e-4657-af6d-80793b5f50f6 none swap sw 0 0 My Alt + Tab menu looks and works oddly what's different between each and collect method in Ruby How to ask for "Save Changes?" on Lighthing Component form when user tries to navigate away We have a Lightning Community and would like to prompt the user to "Save Changes" if they try to click one of the community's navigational components (home link, or other menu item) but they have unsaved form changes on a custom Lightning component.  Ideally, we'd have a window.confirm popup asking if they want to leave without saving their changes, and if they click Cancel, the URL navigation would be aborted.  Is this possible via custom Lighting Components and Lighting Communities, and if so, how? If not, are there any patterns to work around this? I get Chrome notifications from several websites and they work when I don't even have any tabs open for those sites.  But sometimes I get these Chrome notifications when I am not at my desk or looking at my laptop.  As some of these notifications are useful to me, I would like to be able to access any that I have missed.  Is there a way to view the notification history?