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QUESTION
I have the following example string with line breaks "\n" and spaces " ":
a <- "\n \n \n \nTEST TEST\n"
I would like to remove spaces (" ") directly following after line breaks ("\n"), but not the spaces after other strings (like "TEST" in my toy example). My desired output is therefore:
"\n\n\n\nTEST TEST\n"
I tried stringr's str_remove_all and str_replace_all but didn't succeed as those seem to have problems in this case with the adjacent occurences of the line breaks. This is the closest I got:
str_replace_all(a, "\n[ ]*\n", "\n\n")
I spent hours on this (probably ridiculously easy) problem, any help is thus highly appreciated!
...ANSWER
Answered 2021-May-17 at 06:07gsub("\n *", "\n", a)
QUESTION
I am trying to convert Scripted pipelines into Declarative Pipeline.
Here is a Pipeline:
...ANSWER
Answered 2021-Apr-13 at 18:18It has to be like
QUESTION
class Model(nn.Module):
def __init__(self,
input_size=12175,
hidden_size=6,
num_layers=1,
batch_size=1,
sequence_length=1,
num_classes=6):
"""RNN and FC. hidden_size and num_classes MUST equal."""
super().__init__()
self.rnn = nn.RNN(input_size=input_size,
hidden_size=hidden_size,
batch_first=True)
self.input_size = input_size
self.hidden_size = hidden_size
self.num_layers = num_layers
self.batch_size = batch_size
self.sequence_length = sequence_length
self.num_classes = num_classes
# Fully-Connected layer
self.fc = nn.Linear(num_classes, num_classes)
def forward(self, x, hidden):
import ipdb; ipdb.set_trace()
# Reshape input in (batch_size, sequence_length, input_size)
x = x.view(self.batch_size, self.sequence_length, self.input_size)
x = x.double()
hidden = hidden.double()
out, hidden = self.rnn(x, hidden)
out = self.fc(out) # Add here
return hidden, out
def init_hidden(self):
return torch.zeros(self.num_layers, self.batch_size, self.hidden_size)
...ANSWER
Answered 2021-Apr-08 at 13:30You are ensure type for RNN
s input and hidden state, but it also contain some tensor parameters, weights, biases etc. To make them double
, try torch.set_default_tensor_type(t)
before RNN
object construction, but I personaly would use Float
.
QUESTION
Hello I am new to using Regex. I have this following string -
...ANSWER
Answered 2021-Mar-21 at 06:41try this:
QUESTION
Follow-up question for IEEE 754 conformant sqrt() implementation for double type.
Context: Need to implement IEEE 754 conformant sqrtf()
taking into account the following HW restrictions and usage limitations:
Provides a special instruction
qseed.f
to get an approximation of the reciprocal of the square root (the accuracy of the result is no less than 6.75 bits, and therefore always within ±1% of the accurate result).Single precision FP:
a. Support by HW (SP FPU): has support;
b. Support by SW (library): has support;
c. Support of subnormal numbers: no support (
FLT_HAS_SUBNORM
is 0).Double precision FP:
a. Support by HW (DP FPU): no support;
b. Support by SW (library): has support;
c. Support of subnormal numbers: no support (
DBL_HAS_SUBNORM
is 0).
I've found one presentation by John Harrison and ended up with this implementation (note that here qseed.f
is replaced by rsqrtf()
):
ANSWER
Answered 2021-Mar-24 at 23:52Computing a single-precision square root via double-precision code is going to be inefficient, especially if the hardware provides no native double-precision operations.
The following assumes hardware that conforms to IEEE-754 (2008), except that subnormals are not supported and flushed to zero. Fused-multiply add (FMA) is supported. It further assumes an ISO-C99 compiler that maps float
to IEEE-754 binary32
, and that maps the hardware's single-precision FMA instruction to the standard math function fmaf()
.
From a hardware starting approximation for the reciprocal square root with a maximum relative error of 2-6.75 one can get to a reciprocal square root accurate to 1 single-precision ulp with two Newton-Raphson iterations. Multiplying this with the original argument provides an accurate estimate of the square root. The square of this approximation is subtracted from the orginal argument to compute the approximation error for the square root. This error is then used to apply a correction to the square root approximation, resulting in a correctly-rounded square root.
However, this straightforward algorithm breaks down for arguments that are very small due to underflow or overflow in intermediate computation, in particular when the underlying arithmetic operates in flash-to-zero mode that flushes subnormals to zero. For such arguments we can construct a slowpath code that scales the input towards unity, and scales back the result accordingly once the square root has been computed. Code for handling special operands such as zeros, infinities, NaNs, and negative arguments other than zero is also added to this slowpath code.
The NaN generated by the slowpath code for invalid operations should be adjusted to match the system's existing operations. For example, for x86-based systems this would be a special QNaN called INDEFINITE, with a bit pattern of 0xffc00000
, while for a GPU running CUDA it would be the canonical single-precision NaN with a bit pattern of 0x7fffffff
.
For performance reasons it may be useful to inline the fastpath code while making the slowpath code a called outlined subroutine. Single-precision math functions with a single argument should always be tested exhaustively against a "golden" reference implementation, which takes just minutes on modern hardware.
QUESTION
The layout is the following:
There is a Gtk::ScrollWindow
and inside of it is Gtk::TextView
, the latter is of a derived class called TextArea
.
As a test, there is a button that adds some texgt to the TextView one line at the time and attempts to immediately scroll to the bottom.
The code:
...ANSWER
Answered 2021-Mar-05 at 11:38I believe your problem is that you use an iterator to move across the buffer in which you are inserting text. As the documentation suggests:
Iterators are not valid indefinitely; whenever the buffer is modified in a way that affects the number of characters in the buffer, all outstanding iterators become invalid.
Instead of using iterators, I suggest using a Gtk::TextBuffer::Mark
that refers to the end of the buffer. Unlike iterators, marks represent:
A position in the buffer, preserved across buffer modifications.
The Gtk::TextView
widget also has overloads of its scroll_to
method that deal with marks, one of which is:
QUESTION
I'm using the following code to parse a subset of Markdown text:
...ANSWER
Answered 2021-Feb-24 at 11:33Thanks @donaldh for pointing me to the right direction!
By changing all occurences of rule
to token
fixed the issue!
QUESTION
I am attempting to write a script which send emails containing log messages...
Firstly, I have installed ssmtp
and configured /etc/ssmtp/ssmtp.conf
as follows:
ANSWER
Answered 2021-Jan-27 at 14:22ssmtp
is nearly to be no longer supported. I tried to use the suggested package msmtp
, and it works
QUESTION
I have 2 inputs and 4 outputs. I want to use the time2vec to predict the outputs. I have used the code in https://towardsdatascience.com/time2vec-for-time-series-features-encoding-a03a4f3f937e, it works for one input and one output. But when I want to use for (2 inputs and four outputs) it gives me the following error:
...ANSWER
Answered 2021-Feb-09 at 08:56You have to change the parameters inside the T2V layer and inside your network in order to correctly match the shapes
QUESTION
I can't get this to work. I've also tried the --debug
option in IntelliJ. It's always printing "debug is not enabled" and never printing my .debug() messages to console. Any ideas?
the .java file
...ANSWER
Answered 2021-Feb-04 at 00:15I figured it out. After poking around SO more, I updated my config file to set the logging level as follows:
/src/main/resources/application.yml
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