pbt | Population Based Training | Machine Learning library
kandi X-RAY | pbt Summary
kandi X-RAY | pbt Summary
The figures above were produced with a naive PBT selection method: select the best model each time. The accuracy improves to around 99.35% with the selection method in the paper: truncation selection. Seeds will change results. A simple conv net was used. Dataset: MNIST. I produced these figures using an old and very different version of this repo. I haven't yet re-added logging and plotting.
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Top functions reviewed by kandi - BETA
- Get a task
- Retrieve a column from population
- Creates a new population
- Insert values into population table
- Create a new table
- Get the maximum value of a db column
- Displays predictions for the given preds
- Plot images
- Mask an image
- Evaluate the model
- Train the model
- Performs a single step
- Plot portrait and masks
- Convert gray to RGB
- Update a population
- Update a table
- Return an optimizer for the given model
- Return the flickr ID for a flickr
- Save numpy array to file
- Load checkpoint from file
- Save checkpoint to file
pbt Key Features
pbt Examples and Code Snippets
Community Discussions
Trending Discussions on pbt
QUESTION
I am learning FP and got introduced to the concept of property-based testing and for someone from OOP world PBT looks both useful and dangerous. It does check a lot of options, but what if there is one (or some) options that fail, but they didn't fail during your first let's say Jenkins build. Then next time you run the build the test may or may not fail, doesn't it kill the entire idea of repeatable builds?
I see that some people explored options to make the tests deterministic, but then if such test doesn't catch an error it will never catch it.
So what's better approach here? Do we sacrifice build repeatability to eventually uncover a bug or do we take the risk of never uncovering it, but get our repeatability back?
(I hope that I properly understood the concept of PBT, but if I didn't I would appreciate if somebody could point out my misconceptions)
...ANSWER
Answered 2021-May-14 at 13:24Doing a lot of property-based testing I don’t see indeterminism as a big problem. I basically experience three types of it:
A property is really indeterministic b/c some external factor - e.g. timeout, delay, db config - makes it so. Those flaky tests also show up in example-based testing and should be eliminated by making the external factor deterministic.
A property fails rarely because the triggering condition is only sometimes met by pseudo random data generation. Most PBT libraries have ways to reproduce those failing runs, eg by re-using the random seed of the failing test run or even remembering the exact constellation in a database of some sort. Those failures reveal problems and are one of the reasons why we’re doing random test cases generation in the first place.
Coverage assertions („this condition will be hit in at least 5 percent of all cases“) may fail from time to time even though they are generally true. This can be mitigated by raising the number of tries. Some libs, eg quickcheck, do their own calculation of how many tries are needed to prove/disprove coverage assumptions and thereby mostly eliminate those false positives.
The important thing is to always follow up on flaky failures and find the bug, the indeterministic external factor or the wrong assumption in the property‘s invariant. When you do that, sporadic failures will occur less and less often. My personal experience is mostly with jqwik but other people have been telling me similar stories.
QUESTION
html code ( string value : "test abc") :
...ANSWER
Answered 2021-Feb-14 at 05:10You can just do "{{$collection_summary->pbt}}" like this:
QUESTION
I would like to show a gif inside a Picture Box for 2 seconds on a separate thread from the main thread. I am running a timer that moves a Picture Box with an Image on the main thread.
To test I created a Picture Box and added same Image I start the background thread with a button click. The obvious ERROR or Issue is that the supposed Background Thread slows the Main Thread.
Creating and Implementing a Threads seems to offer two options BackgroundWorker and Task.Run.
I looked at this Code Magazine Article which offered way more options than I am grasping: Code Magazine Article
Also looked at this Article could not convert the C# code to VB YES I used a code converter: Stephen Cleary
My code is posted below for the Background Thread No need to post the Timer Tick Code.
Question what am I missing or what am I doing wrong OR is this just not possible?
...ANSWER
Answered 2020-Sep-15 at 18:33Trying to reproduce this NOT seeing your Timer tick code I wrote my own
Understanding the GAME design of Breakout will help for anyone trying to follow Vectors steps need to show the gif for X amount of Seconds
First you need to Stopwatch integrated into the Timer
Second you need to know when to set the END time in Seconds Logic would require this happens when the BALL IntersectsWith the BRICK
So we write a Function called Fire see code below
NO need to have a gif for each BRICK so now we need to move our one and only gif to the correct BRICK and let it run for X Seconds We also need to make the gif Visible WHY you might ask if Enabled and Visible they run for ever It was easier to just manage Visibility
You also need code inside the Timer Tick method to make the gif Invisible after X Seconds
Excuse my lack of declarative variables
pbOne = the BALL & btnB1 = BRICK & PbT = Picture Box with the gif
QUESTION
I am trying to scrape video frames from trafficview.org and can't seem to figure out how to decode the data.
I wrote a few lines of code based on tutorials on this websocket_client to access a live streaming websocket and receive the messages directly.
I have monitored the messages coming in via the network tab on Chrome and also dug into the output from the code below and am fairly certain the data are streaming in as a fragmented MP4. Below are the first 100 or so byte/messages:
b'\xfa\x00\x02\x86\xf1B\xc0\x1e\x00\x00\x00\x18ftypiso5\x00\x00\x02\x00iso6mp41\x00\x00\x02jmoov\x00\x00\x00lmvhd\x00\x00\x00\x00\xdb\x7f\xeb\xb2\xdb\x7f\xeb\xb2\x00\x00\x03\xe8\x00\x00\x00\x00\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
Throughout this output, there are lots of moof and mdat pairs. Lets say I let this code run for 30 seconds, how can I convert this raw byte string into an mp4 file?
...ANSWER
Answered 2020-Sep-15 at 22:07ws = create_connection(url, headers=headers)
# Then send a message through the tunnel
ws.send('ping')
start = timeit.default_timer()
flag = True
output = []
while flag:
output.append(ws.recv())
if timeit.default_timer() - start > 90:
flag = False
result = output[0][8:]
for msg in output[1:]:
if msg[0] == 249:
moofmdat = b''
moof = b''
continue
if msg[0] == 252:
vidbuf = msg[4:]
if msg[0] == 251:
moof += msg[4:]
if msg[0] == 254:
mdat = msg[4:]
if msg[0] == 255:
moofmdat += moof
moofmdat += mdat
moofmdat += vidbuf
result += moofmdat
with open('test.mp4', 'wb') as file:
file.write(result)
QUESTION
The System.IO.Path Methods gave me some really weird results while combining two paths;
...ANSWER
Answered 2020-Sep-03 at 12:20The issue appears to be that .NET (and maybe Windows) does not view the parent of \\server1\customers to be \\server.
It looks like technically \\server is not a valid UNC path (i.e. you can't store files there directly).
QUESTION
I'm trying to get a Google Map to load in jsdom so I can test map/mouse events with react-testing-library. Unfortunately, the map tiles and map controls are not loading into the dom. I'm not getting any error messages from Google Maps or jsdom, so I'm not sure what the problem is.
I'm using the following packages:
...ANSWER
Answered 2020-Jul-17 at 16:48Google maps will not mount the map (and its controls) until it makes sure the container is visually visible and has size > 0.
(You can verify it by writing your html in an .html file and setting height: 0 style for container. then you'll see it wont create the map (use inspector) until you set the height: 400px.)
pretendToBeVisual: true works:
jsdom pretendToBeVisual: true does not really really render anything. so getBoundingClientRect, clientHeight and clientWidth and ... will return 0.
When you use googl-maps and jsdom together: google-maps will load, but it doesn't create the actual map, since it thinks the container size is 0 or it's not visible.
I tried to override DomElement methods and attributes that are relating to size, like: offsetHeight and clientHeight and getBoundingClientRect (for all elements), but since there is alot of attributes/methods related to size, and it's time consuming to override all of them, it's not a wise choice. (Note that to override read-only properties like offsetHeight, you can't use normal overriting methods. instead you should override it with: Object.defineProperty.)
So i recomment to try finding an alternative to jsdom with rendering support (or to use a test library that executes on real browser) / or try to read the google-maps source code and find out how resize event handler checks if the container is visible or not, and overwrite all of that methods.
(also if you don't care about being up-to-date, you can also try to check if you can find an older version of google-maps that it always renders the map.)
QUESTION
I have a HERE-API flow request like this:
...ANSWER
Answered 2018-Oct-18 at 11:05You can refer to Here Traffic API Documentation to get the response elements and meanings documentation.developer.here.com/pdf/traffic_hlp/6.0.85.0/Traffic%20API%20v6.0.85.0%20Developer's%20Guide.pdf. You can also go to https://developer.here.com/documentation/versions and download this file.
QUESTION
I am trying to read an API into a SQL database directly.
...ANSWER
Answered 2020-Mar-25 at 06:27declare @j nvarchar(max) = N'{"Items":[{"Name":"ItemCode","Value":"KA-2-1-SPD"},{"Name":"Country","Value":"AU"},{"Name":"MSRP","Value":"150.00000000"},{"Name":"_ItemId","Value":"PBT=[ue_BBL_MSRPPricing] MSRP.DT=[2020-02-07 13:27:35.097] MSRP.ID=[a4bdcc19-d00c-4fe7-9ad0-4e6b4aaa9cbb]"}]}';
declare @ts table(Json_Table nvarchar(max));
insert into @ts(Json_Table) values(@j);
select nv.*
from openjson(@j)
with (Items nvarchar(max) as json) as i --Items is array..
cross apply openjson(i.Items) --...cross apply to get each object in the array
with (Name nvarchar(200), Value nvarchar(200)) as nv;
select nv.*
from @ts as ts
cross apply openjson(ts.Json_Table, '$.Items')
with (Items nvarchar(max) '$' as json) as i
cross apply openjson(i.Items)
with (Name nvarchar(200), Value nvarchar(200)) as nv;
select nv.*
from @ts as ts
cross apply openjson(ts.Json_Table)
with (Items nvarchar(max) as json) as i
cross apply openjson(i.Items)
with (Name nvarchar(200), Value nvarchar(200)) as nv;
select nv.*
from @ts as ts
cross apply openjson(ts.Json_Table)
with (Items nvarchar(max) '$.Items' as json) as i
cross apply openjson(i.Items)
with (Name nvarchar(200), Value nvarchar(200)) as nv;
select nv.*
from @ts as ts
cross apply openjson(ts.Json_Table, '$.Items') as i
cross apply openjson(i.value)
with (Name nvarchar(200), Value nvarchar(200)) as nv;
QUESTION
I exported sql database tables form DBeaver Community Edition in csv files and then imported them to my mongodb database using mongorestore.
Now i want to query this database with mongoose from my express app, but even though the schema i typed in looks exactly like the json entry i can see in mongodb compass, the query from mongosse i.e. model.find() returns nothing.
Where could I start to troubleshoot this?
Sample Document:
...ANSWER
Answered 2020-Mar-03 at 19:18mongoose pluralize the collection name by default, so instead of fish_final it expects fish_finals, either rename the collection name to fish_finals or specify collection name as fish_final manually in model definition like this:
QUESTION
std::string mail;
std::string password;
std::system("mkdir ~/.cache/pbt");
std::cout << "Enter your accounts mail" << std::endl;
std::cin >> mail;
std::cout << "Now enter your accounts password";
std::cin >> password;
std::system("perl zap2xml.pl -u " + mail + " -p " + password + " -o ~/.cache/pbt");
ANSWER
Answered 2019-Dec-11 at 23:19std::system() takes a const char* as input, but you are trying to pass it a std::string instead. std::string is not implicitly convertible to const char*, hence the compiler error. However, you can use the string's c_str() method to get a const char*, eg:
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No vulnerabilities reported
Install pbt
You can use pbt like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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