reasonable | OWL 2 Reasoner built on DataFrog | Machine Learning library
kandi X-RAY | reasonable Summary
kandi X-RAY | reasonable Summary
An OWL 2 RL reasoner with reasonable performance.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of reasonable
reasonable Key Features
reasonable Examples and Code Snippets
import reasonable
# import triples from an rdflib Graph
import rdflib
g = rdflib.Graph()
g.parse("example_models/ontologies/Brick.n3", format="n3")
g.parse("example_models/small1.n3", format="n3")
r = reasonable.PyReasoner()
r.from_graph(g)
triples
use ::reasonable::owl::Reasoner;
use std::env;
use std::time::Instant;
use log::info;
fn main() {
env_logger::init();
let mut r = Reasoner::new();
env::args().skip(1).map(|filename| {
info!("Loading file {}", &filename);
Community Discussions
Trending Discussions on reasonable
QUESTION
I am trying to generate all directed graphs with a given number of nodes up to graph isomorphism so that I can feed them into another Python program. Here is a naive reference implementation using NetworkX, I would like to speed it up:
...ANSWER
Answered 2022-Mar-31 at 13:5898-99% of computation time is used for the isomorphism tests, so the name of the game is to reduce the number of necessary tests. Here, I create the graphs in batches such that graphs have to be tested for isomorphisms only within a batch.
In the first variant (version 2 below), all graphs within a batch have the same number of edges. This leads to appreaciable but moderate improvements in running time (2.5 times faster for graphs of size 4, with larger gains in speed for larger graphs).
In the second variant (version 3 below), all graphs within a batch have the same out-degree sequence. This leads to substantial improvements in running time (35 times faster for graphs of size 4, with larger gains in speed for larger graphs).
In the third variant (version 4 below), all graphs within a batch have the same out-degree sequence. Additionally, within a batch all graphs are sorted by in-degree sequence. This leads to modest improvements in speed compared to version 3 (1.3 times faster for graphs of size 4; 2.1 times faster for graphs of size 5).
QUESTION
I have a legacy .NET application that I have ported to .NET 6.0 and am executing cross platform (Windows & Linux).
Much of the legacy code was developed with hard coded path creation, using backslash in strings, like
...ANSWER
Answered 2022-Mar-26 at 12:17As there's not a built in way to protect against this at development or execution time, I'm going to add this code to run after my integration tests. It will sweep the filesystem and throw an exception if it finds any files or directories created with an inappropriate character (backslash).
I wanted to add a check for colon as well, in case folks were creating paths like "c:\feux\barre.txt", but it looks like at least NuGet creates directories with colon (ex. ~/.local/share/NuGet/v3-cache/670c1461c29885f9aa22c281d8b7da90845b38e4$ps:_api.nuget.org_v3_index.json
)
QUESTION
I am getting a
...ANSWER
Answered 2022-Mar-18 at 20:51std::lower_bound
takes a Cpp17ForwardIterator, which must also be a Cpp17InputIterator. The Cpp17InputIterator requirements include:
*a
reference
, convertible to T
Here, a
is a "value of type X
or const X
", so MSVC is justified in requiring a const-qualified unary indirection operator; the "or" means that the code using the iterator can use either, and the author of the iterator has to support both. (Note that Cpp17InputIterator differs from Cpp17OutputIterator, where the required operation is *r = o
, with r
a non-const reference, X&
.)
So your operator*
should have const
qualification, and return a reference; specifically, a reference to T
or const T
(this is a Cpp17ForwardIterator requirement). You can satisfy this straightforwardly with using reference = const T&
and by making cur_
and cur_valid_
mutable
.
The use of mutable
here is entirely legitimate; since operator*() const
is idempotent, it is "logically const" and the modifications to the data members are non-observable.
QUESTION
This is about the correct diagnostics when short int
s get promoted during "usual arithmetic conversions". During operation /
a diagnostic could be reasonably emitted, but during /=
none should be emitted.
Behaviour for gcc-trunk and clang-trunk seems OK (neither emits diagnostic for first or second case below)... until...
we add the entirely unrelated -fsanitize=undefined
... after which, completely bizarrely:
gcc-trunk emits a diagnostic for both cases. It really shouldn't for the 2nd case, at least.
Is this a bug in gcc?
...ANSWER
Answered 2022-Feb-19 at 16:30For a built-in compound assignment operator $=
the expression A $= B
behaves identical to an expression A = A $ B
, except that A
is evaluated only once. All promotions and other usual arithmetic conversions and converting back to the original type still happen.
Therefore it shouldn't be expected that the warnings differ between short avg1 = sum / count;
and tmp /= count;
.
A conversion from int
to short
happens in each case. So a conversion warning would be appropriate in either case.
However, the documentation of GCC warning flags says specifically that conversions back from arithmetic on small types which are promoted is excluded from the -Wconversion
flag. GCC offers the -Warith-conversion
flag to include such cases nonetheless. With it all arithmetic in your examples generates a warning.
Also note that this exception to -Wconversion
has been introduced only with GCC 10. For some more context on it, the bug report from which it was introduced is here.
It seems that Clang has always been more lenient on these cases than GCC. See for example this issue and this issue.
For /
in GCC -fsanitize=undefined
seems to break the exception that -Wconversion
is supposed to have. It seems to me that this is related to the undefined behavior sanitizer adding a null-value check specifically for division. Maybe, after this transformation, the warning flag logic doesn't recognize it as direct arithmetic on the smaller type anymore.
If my understanding of the intended behavior of the warning flags is correct, I would say that this looks unintended and thus is a bug.
QUESTION
Does it make sense to use Conda + Poetry for a Machine Learning project? Allow me to share my (novice) understanding and please correct or enlighten me:
As far as I understand, Conda and Poetry have different purposes but are largely redundant:
- Conda is primarily a environment manager (in fact not necessarily Python), but it can also manage packages and dependencies.
- Poetry is primarily a Python package manager (say, an upgrade of pip), but it can also create and manage Python environments (say, an upgrade of Pyenv).
My idea is to use both and compartmentalize their roles: let Conda be the environment manager and Poetry the package manager. My reasoning is that (it sounds like) Conda is best for managing environments and can be used for compiling and installing non-python packages, especially CUDA drivers (for GPU capability), while Poetry is more powerful than Conda as a Python package manager.
I've managed to make this work fairly easily by using Poetry within a Conda environment. The trick is to not use Poetry to manage the Python environment: I'm not using commands like poetry shell
or poetry run
, only poetry init
, poetry install
etc (after activating the Conda environment).
For full disclosure, my environment.yml file (for Conda) looks like this:
...ANSWER
Answered 2022-Feb-14 at 10:04As I wrote in the comment, I've been using a very similar Conda + Poetry setup in a data science project for the last year, for reasons similar to yours, and it's been working fine. The great majority of my dependencies are specified in pyproject.toml
, but when there's something that's unavailable in PyPI, I add it to environment.yml
.
Some additional tips:
- Add Poetry, possibly with a version number (if needed), as a dependency in
environment.yml
, so that you get Poetry installed when you runconda env create
, along with Python and other non-PyPI dependencies. - Consider adding
conda-lock
, which gives you lock files for Conda dependencies, just like you havepoetry.lock
for Poetry dependencies.
QUESTION
I see multiple sources claiming that an exception happening inside an async{} block is not delivered anywhere and only stored in the Deferred
instance. The claim is that the exception remains "hidden" and only influences things outside at the moment where one will call await()
. This is often described as one of the main differences between launch{}
and async{}
. Here is an example.
An uncaught exception inside the async code is stored inside the resulting Deferred and is not delivered anywhere else, it will get silently dropped unless processed
According to this claim, at least the way I understand it, the following code should not throw, since no-one is calling await:
...ANSWER
Answered 2022-Jan-29 at 10:51In some sense, the mess you experience is a consequence of Kotlin coroutines having been an early success, before they became stable. In their experimental days, one thing they lacked was structured concurrency, and a ton of web material got written about them in that state (such as your link 1 from 2017). Some of the then-valid preconceptions remained with people even after their maturation, and got perpetuated in even more recent posts.
The actual situation is quite clear — all you have to understand is coroutine hierarchy, which is mediated through the Job
objects. It doesn't matter whether it's a launch
or an async
, or any further coroutine builder — they all behave uniformly.
With this in mind, let's go through your examples:
QUESTION
There are existing questions asking about labeling a single geom_abline()
in ggplot2
:
- R ggplot2: Labelling a horizontal line on the y axis with a numeric value
- R ggplot2: Labeling a horizontal line without associating the label with a series
- Add label to abline ggplot2 [duplicate]
None of these get at a use-case where I wanted to add multiple reference lines to a scatter plot, with the intent of allowing easy categorization of points within slope ranges. Here is a reproducible example of the plot:
...ANSWER
Answered 2022-Jan-17 at 21:55This was a good opportunity to check out the new geomtextpath
, which looks really cool. It's got a bunch of geoms to place text along different types of paths, so you can project your labels onto the lines.
However, I couldn't figure out a good way to set the hjust parameter the way you wanted: the text is aligned based on the range of the plot rather than the path the text sits along. In this case, the default hjust = 0.5 means the labels are at x = 0.5 (because the x-range is 0 to 1; different range would have a different position). You can make some adjustments but I pretty quickly had labels leaving the range of the plot. If being in or around the middle is okay, then this is an option that looks pretty nice.
QUESTION
I have a ring buffer that looks like:
...ANSWER
Answered 2021-Dec-31 at 12:49Previous answers may help as background:
c++, std::atomic, what is std::memory_order and how to use them?
https://bartoszmilewski.com/2008/12/01/c-atomics-and-memory-ordering/
Firstly the system you describe is known as a Single Producer - Single Consumer queue. You can always look at the boost version of this container to compare. I often will examine boost code, even when I work in situations where boost is not allowed. This is because examining and understanding a stable solution will give you insights into problems you may encounter (why did they do it that way? Oh, I see it - etc). Given your design, and having written many similar containers I will say that your design has to be careful about distinguishing empty from full. If you use a classic {begin,end} pair, you hit the problem that due to wrapping
{begin, begin+size} == {begin, begin} == empty
Okay, so back synchronisation issue.
Given that the order only effects reording, the use of release in Publish seems a textbook use of the flag. Nothing will read the value until the size of the container is incremented, so you don't care if the orders of writes of the value itself happen in a random order, you only care that the value must be fully written before the count is increased. So I would concur, you are correctly using the flag in the Publish function.
I did question whether the "release" was required in the Consume, but if you are moving out of the queue, and those moves are side-effecting, it may be required. I would say that if you are after raw speed, then it may be worth making a second version, that is specialised for trivial objects, that uses relaxed order for incrementing the head.
You might also consider inplace new/delete as you push/pop. Whilst most moves will leave an object in an empty state, the standard only requires that it is left in a valid state after a move. explicitly deleting the object after the move may save you from obscure bugs later.
You could argue that the two atomic loads in consume could be memory_order_consume. This relaxes the constraints to say "I don't care what order they are loaded, as long as they are both loaded by the time they are used". Although I doubt in practice it produces any gain. I am also nervous about this suggestion because when I look at the boost version it is remarkably close to what you have. https://www.boost.org/doc/libs/1_66_0/boost/lockfree/spsc_queue.hpp
QUESTION
I am trying to try a sample project in Flutter integration email and google based login, and planning to use firebase initialisation for doing it while I have followed all the steps as mentioned in tutorials I am getting this error as soon as firebase is attempted to be initialised.
...ANSWER
Answered 2021-Dec-25 at 09:13UPDATE:
For your firebase_core
version is seems to be sufficient to pass the FirebaseOptions
once you initialize firebase in your flutter code (and you don't need any script tags in your index.html
):
QUESTION
I have an app which scans for BLE devices. It was working perfectly on Android 10, but since I updated my phone to Android 11, the onScanResult
just never gets called if I put the application to the background, or if I lock the screen.
This is quite annoying. I haven't found any reasonable ideas what could cause this. I haven't found any differences in Android 11 whatsoever which would indicate this behavior change. Android 12 has new BT permissions if you target your app to api level 31, but I do target mine to api level 30, and I do run my app on Android 11.
I'm absolutely clueless. I've tried different scan modes, as well with adding scan filter but nothing has changed.
My scan settings:
...ANSWER
Answered 2021-Dec-03 at 17:32It is hard to be said with the information provided but one reason could be that Android 11 requires "Background location Access" in the Manifest to work in a background mode.
You may take a look in here for more details: https://developer.android.com/about/versions/11/privacy/foreground-services
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Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
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