Why can I not choose a beta parameter when conducting LDA with Mallet?

I am recently working with Mallet to conduct LDA Topic Modeling. I recognized that I am able to pass the alpha hyperparameter for the algorithm to Mallet, but the LDAMallet class does not contain any variable for the beta parameter. Can you guys tell me how that comes?
I know I can turn on hyperparameter optimization every n intervals, which will recalculate an optimal value for the parameters, but even there I dont know by what criteria they are optimized.


microphone – Can I use a Shure Beta 58 vocal mic with my PowerBook MacIntosh laptop?

I have an older Shure Beta 58 mic purchased in 1996 that I would like to use as an external microphone in lieu of th built in mic on my PowerBook laptop. What interface do I need? I would like to use it for conferencing software like Zoom. I am also supposed to make an audio recording of some songs to send to a virtual choir project.

Google Cloud Platform: How can I identify which ALPHA / BETA functions are being used in my GCP organization?

I would like to be able to regularly audit my gcp status verifying that unapproved ALPHA / BETA functions are not enabled.

I can't seem to find a gcloud command that can identify this.

I acknowledge that this command;

gcloud services list

It would list the enabled APIs of a project, however is there some way of filtering at the API stage i.e. Alpha, Beta, GA?

Then I would run a script to scan all my projects, but of course I need to identify the correct command first!

Any ideas?

Ubuntu 20.04 beta shows an error in updating sudo apt

I am currently using Ubuntu 20.04 beta and I get this error in sudo apt update

E: The repository 'http://ppa.launchpad.net/webupd8team/java/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

migration – Hello PostgreSQL professionals! We are looking for beta testers to join our DevOps expert feedback exchange

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In Godot 3.2.1 stable beta, in 2D sprite shaders, how do I import a new PNG to test those shaders?

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I am using Godot 3.2.1. on Steam on Linux Mint. How do I take a pixel art image I made and import it for use in Godot? I couldn't find it in Project.

Kelvpn.com – Free Blockchain VPN for Beta Testers – Low End Box

Kelvpn.com recently submitted an interesting and unique presentation for its VPN Blockchain service, which is currently free for all testers. We thought this would be a great deal to present because it is so different from much of what we focus on here at Low End Box!

This is what they had to say:
"We have launched a beta test of a decentralized VPN on a protected blockchain with secure quantum encryption. All the code is in the GitLab. We are looking for beta-testers, people who can help us test and polish the technology.

Anyone can start a node and use the network for free similar to the torrents applied to their Internet channel (this function will be available in 2-3 weeks, for now, you can use our servers for free, all the links at the end of the message) KELVPN is the first solution in Cellframe, a service-oriented blockchain platform. We have been building it for 2 years (blockchain platform + VPN solution), everything is built from scratch, we don't use IPSec or any other public protocol. "

  • Traffic permit: unlimited for proof of bet
  • Featured Locations: Netherlands, Singapore (10 more locations to come next week)
  • Payment options: free
  • Refund policy: –

Instructions for the beta test: https://medium.com/@cellframe/your-invitation-to-kelvpn-beta-ad6b1085b43a
GitLab: https://gitlab.demlabs.net/cellframe
Demo video: https://youtu.be/yTJir4VCK7g
CEO telegram account to ask questions: @yardy
Let us know how the service works by leaving your thoughts in the comments below.

Why is the bitcoin client still in beta?

Bitcoin Core will probably never have a "1.0". 1.0 is a socially significant number that indicates some kind of purpose or integrity (at least initially). This in itself prevents developers from declaring that there may even be a 1.0 or creating some timeline for a 1.0. Bitcoin Core is continually being developed and there is no point where many developers envision it becoming this kind of "final" or "complete" implying 1.0.

There is no timeline or roadmap for 1.0. There is no consensus that there should even be a 1.0. There is no consensus on what features would be necessary for a 1.0. It is highly unlikely that there will ever be a 1.0. The versions will most likely remain as is. Maybe in the future the initial 0 will be removed, or maybe some other continuous version scheme (like one based on the date) will be used. But due to the social implications of 1.0, that will probably never happen.

vpn – OpenVPN error "ca md too weak" in ubuntu 2004 beta

I installed 2004 beta today (change 1804 LTS) and am stuck with VPN connection not working. There is a clear error in the syslog file:

nm-openvpn(2738): OpenSSL: error:140AB18E:SSL routines:SSL_CTX_use_certificate:ca md too weak
nm-openvpn(2738): Cannot load certificate file /home/***/.cert/nm-openvpn/***-cert.pem

Google returns some solutions (like totally disabling security or reconfiguring the server), but both are not good / not available to me. Anyway, what I'm really looking for is some kind of confirmation that this is a bug (found, reported, worked) or a change in a policy or something by the ubuntu development team.

Now … There is a post on askubuntu HERE, where someone wrote:

"Ubuntu 19 has increased the requirements for certificates accepted in
generally not just for VPN. Make sure you have an RSA
certify at least one key size of 2048 and at least SHA-2 is used
for signature. "

So I went and wrote both hints in my VPN profile certificate file and I see:

Signature Algorithm: sha1WithRSAEncryption

Next, I downloaded the Ubuntu Live ISO files for versions: 18.04.4, 19.10 and 20.04 (daily) and it confirmed that the same certificate VPN profile works on all of them (MS Win7 and Win10 included) but not on the latest version Ubuntu 2004 daily. I'm using the latest version of OpenVPN, of course.

So I am pretty convinced that something has changed and having a confirmation would go a long way.

Please let me know if you know where to look / who to ask. Thank you!

uninstall: how to uninstall beta gcamera app downloaded from unknown installation source for samsung galaxy a50s (SM-A507FN)

I have a new phone. Samsung Galaxy A50s. Model number SM-A507FN

I downloaded Arnova's Beta 6: GCam_5beta6.200105.0445build-7.2.018.apk

for Android 9+ phones from https://www.celsoazevedo.com/files/android/google-camera/dev-suggested/
assuming it will work on my phone. However, the application has been blocked frequently and does not work.
I have updated the phone software, so it was updated to Android 10. Kernel 4.14.62-17887617.

This app was not installed from the game store, so I don't know how to uninstall it now.
So let me know how to uninstall this app.