Because if we can use those stuff and license the model as public domain also if we are using to generate it resources from different sources with different license, will change our project because we will not have any limit. The point we raised is we can use stuff license in a way and release something that elaborate this stuff (or maybe just a part) create issue for the whole project.

Just as the title we (for Italian) have a problem. Right now the majority of datasets are from the academic world and they don’t have any license but need a citation of the paper. So for the italian model https://github.com/MozillaItalia/DeepSpeech-Italian-Model/ we are avoiding them because we don’t know how to deal with them.

Both countersink and counterbore holes are features we often see in our customers' CNC machined part designs. The most obvious difference between the two is probably their shape, but aside from that, there are a few others worth knowing about. Let’s look at these hole types in more detail and find out when they’re best used.

Making one of these holes is a breeze: first drill a small pilot hole with a drill bit of an appropriate diameter, and then make that hole bigger with an endmill or a counterbore cutter which is specially designed for the job. If you make a counterbore hole big enough for a washer, this could ramp up its holding power.

These holes can be made with a drill and a countersink bit or machined with endmills. The most important thing to do is make sure the hole is the right size and shape for whatever is going into it.

Countersink and counterbore holes are hardly the only types of holes available in machining. If you’re browsing through various types, and need to decide which one to use, check out these, too:

Probably Mozilla with legal team can help on understand this. Including the issue of that every country has different regulations…

So I am looking to something for the second point, like an article somewhere on internet just to be sure and have a reference for that decision.

Counterbore holes (callout symbol “⌴”) are also cylindrical and designed to increase a hole’s opening and make a flat bottom, which helps fasteners sit flush with (and below, if necessary) the surface of the piece of material you’re working on. Although this is pretty much their only purpose, they are useful for fasteners like socket-head screws to sit flush. Their walls are 90° perpendicular from the material’s surface, and they lack any taper, resulting in a straight hole with a flat bottom.

On https://hacks.mozilla.org/2019/12/deepspeech-0-6-mozillas-speech-to-text-engine/ are mentioned two academic dataset that have that issue, no license but citation required.

So I am wondering in case of academic dataset with only citations we can use it to release a public domain model or we need to mention them? After all we are using those data to generate something else.

Counterbore holes are normally not as deep as a countersink hole, and instead of having tapered sides, they’re straight. They also tend to have more holding strength than countersink holes for two main reasons: the force applied by the socket cap screw head is parallel to the axis, and the force applied by the screw or bolt is evenly distributed over a larger surface area. You won’t find these strengths with countersunk holes, which have tapered angled sides and unevenly distributed force. The below image will give you a better idea of their differences.

Fisher https://www.ldc.upenn.edu/sites/www.ldc.upenn.edu/files/lrec2004-fisher-corpus.pdf and Switchboard https://catalog.ldc.upenn.edu/LDC97S62 (this one a license that I don’t think that is open source)

I started also a discussion in Italian on reddit https://www.reddit.com/r/ItalyInformatica/comments/e6ffyg/licenze_open_source_e_paper_accademici/ to understand better the problem.

If there is no license, the default is copyright, unfortunately. I was not involved in the negociations for the datasets we paid for, so I’m unsure how that plays here.

Countersink sizes are typically expressed in terms of their diameter (the width of the hole), depth (the distance from the material’s surface down to the pilot hole’s top), and the angle of the countersink. Counterbore sizes typically range from 3/16” to 1”, and countersinks 1/16” to ½”. We always recommend that our customers check a standard counterbore and countersink size chart to make sure their parts are designed to work with standard tooling.

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The cone-shaped hole’s widest part (the “Major Hole Diameter” shown in the image above) is specifically designed for a screw or bolt to be inserted. The angle is important when it comes to these holes because this is what will determine how deep the fastener can be sunk in—the deeper it goes, the more secure it will be. Aside from making a joint stronger, a countersunk hole allows the fastener to go in at a shallower angle, lowering the chances of it stripping the material.Â

On https://hacks.mozilla.org/2019/12/deepspeech-0-6-mozillas-speech-to-text-engine/ are mentioned two academic dataset that have that issue, no license but citation required.

Often used in woodworking on softer materials, countersink holes (callout symbol “⌵”) are cylindrical holes made to match the angle of a screw so it can be secured in place and sit nice and flush. It comes in many angles, from 60° to 120°, although 90° is the most common. Here’s an example of a countersunk hole:

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An example in my case is http://www.mspkacorpus.it/, we already written to those email with no answers in over 10 days. But is just an example how those dataset are released, no license just a citation to do.

Countersunk holes are used for wood and metal screws, while counterbores are mainly used for larger fasteners, like lag bolts. Generally, countersinks need smaller pilots than counterbores, which is why the latter is used for heavy-duty tasks in construction, machinery, and automotive.

So my question is we can use them and release a public domain model? Or we need to mention that we are using and also the users that use the model itself? We have the same problem for audio+text and text only dataset, also on using CC (also non-commercial) to generate a model.