bch | An implementation of Bose-Chaudhuri-Hocquenghem codes | Architecture library

by zedseven Go Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | bch Summary

bch is a Go library typically used in Architecture applications. bch has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

An implementation of binary Bose-Chaudhuri-Hocquenghem (BCH) codes and error-checking in Go.

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Support

bch has a low active ecosystem.

It has 6 star(s) with 0 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

bch has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of bch is current.

Quality

bch has 0 bugs and 0 code smells.

Security

bch has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

bch code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

bch is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

bch releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

It has 583 lines of code, 21 functions and 2 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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bch Key Features

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bch Examples and Code Snippets

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Community Discussions

Trending Discussions on bch

Welch-Berlekamp Algorithm for Reed Solomon code as nonbinary BCH code

State JS object not persistent upon setState

Trying to create Dataframe from lists of zip using Pandas. wanted data table result

batchwise values consumption using python list and dictionary

SQL Error (207): Invalid column name 'BTC'

Python/Django looping over request object and display in a table

Is there a speedier way to nest data by-group?

R - mgsub problem: substrings being replaced not whole strings

How to split the characters of a string by spaces and then resultant elements of list by special characters and numbers and then again join them?

Pairing of symbols in javascript

QUESTION

Welch-Berlekamp Algorithm for Reed Solomon code as nonbinary BCH code

Asked 2022-Mar-30 at 17:30

I am familiar with RS codes and the classic syndrome-based decoding algorithm. However, I now have the task of implementing an alternative decoder, the Welch-Berlekamp algorithm. Here, the underlying application requires that no syndrome computation is required (I am aware that the syndrome-based approach is simpler in complexity than the Welch-Berlekamp algorithm).

Basically, I know that there are two different variants for RS codes.

Original encoding scheme for Reed Solomon code, where there is a fixed set of data points known to encoder and decoder, and a polynomial based on the message to be transmitted, unknown to the decoder.
BCH type code where a fixed polynomial known to both encoder and decoder.

For the original variant of RS codes, the implementation of the Welch-Berlekamp algorithm initially seems relatively easy to me. Here the system of equations can be set up from the generator matrix and the received symbols.

However, it is now required to implement the Welch-Berlekamp algorithm for the second variant. I am currently having difficulties here and I'm also in doubt as to whether this is even possible for this variant.

I would be very grateful if someone could help me if the Welch-Berlekamp algorithm can also be used for the BCH variant.

Best regards,

RatbaldMeyer

...

ANSWER

Answered 2022-Mar-30 at 17:30

implement the Welch-Berlekamp algorithm for the second variant

The parameters are not the same.

Variant 1 - Fixed set of data points. For a RS(n, k) code, decoders operate on n symbols to reconstruct the polynomial used to encode a message.

Variant 2 - Fixed generator polynomial with roots that are successive powers of primitive element α, such as (x-2) (x-4) (x-8) ... . For a RS(n, k) code, decoders generate and then operate on n-k syndromes to determine error locations (error locator polynomial) and error values. In the Wiki article linked to below, the syndromes are described as the result of evaluating the received message r(x) where syndrome[i] = r(α^i), but doesn't make it clear that r(α^i) is the same as r(x) modulo (x - α^i), only inferring it by noting that the syndromes "inherit" all the roots of the generator polynomial.

Welch-Berlekamp requires O(n^3) operations to invert a matrix. Gao's extended Euclid algorithm has time complexity O(n^2) if the initial and constant polynomial used by the decoder based on the fixed set of data points is pre-calculated (the Wiki article shows this polynomial as R[-1]).

https://en.wikipedia.org/wiki/Reed%E2%80%93Solomon_error_correction

Source https://stackoverflow.com/questions/71660289

QUESTION

State JS object not persistent upon setState

Asked 2022-Mar-25 at 08:45

I have a state which looks like this.

...

ANSWER

Answered 2022-Mar-25 at 08:45

Issue is a stale closure over the currencies state. Use a functional state update to correctly update from the previous state instead of the initial state closed over in callback scope.

Example:

Source https://stackoverflow.com/questions/71614162

QUESTION

Trying to create Dataframe from lists of zip using Pandas. wanted data table result

Asked 2022-Feb-11 at 03:13

I'm scraping website and come to the part where to put it in Dataframe. I tried to follow this answer but no expected output.

Here's my whole code

...

ANSWER

Answered 2022-Feb-11 at 03:13

Some how coin_name is twice as long as your other lists. Once you fix that you can do this:

Source https://stackoverflow.com/questions/71073567

QUESTION

batchwise values consumption using python list and dictionary

Asked 2022-Feb-06 at 16:34

Hello all i need a little help in finding solution for a datastructure problem using python . I have two datastructures, batches dictionary which contain batch qty for a certain batch and second datastucture so_data is list of orders. Now task is to loop over so_data and consume batchwise quantities in batches on FIFO basis.

...

ANSWER

Answered 2022-Feb-06 at 16:34

Finally resolved: Well the task was to consume batchwise stock for Sales order list. So after looping sales order I checked:

If so_qty is less than batch qty and fit within given index of batch qty then decreased so_qty from batch qty, then appended current batch into consumed batch list of dictionary which is maintaining batchwise consumption for each order and finally set current so_qty to 0 as order is fullfilled

Else if so_qty is greater than batch qty than reduce batch qty from current so_qty, append remaining batch qty to consumed batch list, set current batch to 0 and continue with same so_qty unless it became 0 and break the loop for current so_qty when 0.

Source https://stackoverflow.com/questions/70973103

QUESTION

SQL Error (207): Invalid column name 'BTC'

Asked 2022-Jan-17 at 14:21

Any idea why this query returns the error "SQL Error (207): Invalid column name 'BTC'"?

I'm just trying to use the WHERE clause after the JOIN staement

...

ANSWER

Answered 2022-Jan-17 at 14:21

You appear to be using the incorrect text qualifier in your WHERE clause - the double-quotes indicate an identifier, not a value. In other words, your WHERE clause is written in a way that SQL Server is trying to find an equality between two columns, rather than a column equal to a value.

Change your code so that your WHERE clause reads WHERE balance_BTC.Currency = 'BTC'; and you should find that the error is resolved.

Source https://stackoverflow.com/questions/70742717

QUESTION

Python/Django looping over request object and display in a table

Asked 2021-Nov-11 at 20:59

Hi so I have a file called b2c2.py where I am making a request to return my balances this request returns b'{"LTC":"0","DOG":"0","USD":"51075.676738623","ADA":"9493.1937","ETH":"3.4E-9","UST":"2977","LNK":"42.422","XLM":"0","GBP":"-58153.761361914","USC":"0.9999995","XRP":"78448.38","EOS":"0","BNB":"0","BTC":"-0.250000004644","EUR":"0.0026082","BCH":"0","DOT":"0","UNI":"0","AUD":"0","CAD":"0","CHF":"0","CNH":"0","ETC":"0","ICP":"0","JPY":"0","KSM":"0","MXN":"0","NZD":"0","SGD":"0","TRX":"0","XAU":"0","XMR":"0","XTZ":"0","ZEC":"0"}'

I then store it into a variable named b2c2_response_content and import this into my view file with from .api_balances.b2c2 import b2c2_response_content

My view then looks like this:

...

ANSWER

Answered 2021-Nov-11 at 20:59

If this is your passing context, you can render it into html template using jinja format as follows:

Source https://stackoverflow.com/questions/69931996

QUESTION

Is there a speedier way to nest data by-group?

Asked 2021-Nov-10 at 15:22

I'm looking for a fast way to summarize a dataset:

by-group
collapsing rows by nesting values

For example, consider the mpg dataset from ggplot2 package. Here we group by manufacturer and year, and nest cty values.

...

ANSWER

Answered 2021-Nov-10 at 15:22

An option with collap

Source https://stackoverflow.com/questions/69828269

QUESTION

R - mgsub problem: substrings being replaced not whole strings

Asked 2021-Nov-04 at 19:58

I have downloaded the street abbreviations from USPS. Here is the data:

...

ANSWER

Answered 2021-Nov-03 at 10:26

Update

Here is the benchmarking for the existing to OP's question (borrow test data from @Marek Fiołka but with n <- 10000)

Source https://stackoverflow.com/questions/69467651

QUESTION

How to split the characters of a string by spaces and then resultant elements of list by special characters and numbers and then again join them?

Asked 2021-Oct-26 at 13:49

So, what I want to do is to convert some words from the string into their respective words in dictionary and rest as it is.For example by giving input as:

...

ANSWER

Answered 2021-Oct-26 at 13:49

You can build you regular expression with the keys of your dictionary, ensuring they're not enclosed in another word (i.e. not directly preceded nor followed by a letter):

Source https://stackoverflow.com/questions/69722720

QUESTION

Pairing of symbols in javascript

Asked 2021-Oct-20 at 01:28

I have a text and a symbols array , so current code does this :

Find a symbol from the text array and if next element is also a symbol, push both (the current symbol and the next element, which is also a symbol)with one / between them to a new array.(Make a symbol pair)

...

ANSWER

Answered 2021-Oct-16 at 16:20

Try using for loop

Source https://stackoverflow.com/questions/69597186

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install bch

You can download it from GitHub.

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