tag:blogger.com,1999:blog-75241902113545872332026-06-19T14:21:00.695+01:00^.^ - http://goo.gl/GDIO^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.comBlogger487125tag:blogger.com,1999:blog-7524190211354587233.post-47531855975865379352024-04-26T16:28:00.005+01:002024-04-26T16:31:06.551+01:00智能优化算法口诀四则
智能优化算法口诀四则
转自 这里
---------------------------- 1. 论遗传算法GA --------------------------- 遗传算法特耀眼 进化模拟它最先 初始种群遍空间 适应计算优劣显 循环迭代四步弦 选择父代组新眷 交叉繁衍添新颜 变异个体不简单 优胜劣汰代代传 算法收敛终算完 ----------------------------------------------- 2. 论差分进化算法DE --------------------------------------------- 差分进化贼优秀 赛场得冠是老手 初始种群放开头&^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-42554638093201697972024-03-31T20:32:00.002+01:002024-03-31T20:32:58.712+01:00Tab Auto Completion of History Commands for PowerShell收藏到CSDN网摘
PowerShell has the capability of Tab auto completion. Moreover, it also remind you the last used parameters and commands in the history as grayed out text. However, Tab cannot auto-complete these grayed-out words - they are there as the reminder to guide your typing. There are two commands to run for enabling the tab completion on these parameters/commands.
^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-91184230698656402392024-03-31T16:01:00.005+01:002024-03-31T20:46:12.016+01:00Speed up Oh-My-Posh Cold Start收藏到CSDN网摘
Oh-My-Posh is a beautiful cross-platform command line customisation tool that runs on windows, linux, and mac. I have set up it for my win11 laptop's Terminal (PowerShell) and WSL2 prompt. One day, I've noticed that it started incredibly slow (>20s). After browsing the internet for a while, a simple fix is to replace the existing one line code in my $PROFILE setting file. Here it is!^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-89424178892183725322023-10-22T17:03:00.003+01:002023-10-22T17:05:42.885+01:00Customise Mouse Keys (including side keys)收藏到CSDN网摘
I purchased a mouse some time ago from Amazon. It features 2 additional side buttons in addition to the typical left-right-middle layout. I was pleasantly surprised to find that these side buttons functioned seamlessly while browsing webpages, serving as the backward/forward navigation controls in the browsing history. This convenience sufficed for most of my needs.
However, I ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-60234449801938289902023-03-24T12:02:00.005+00:002023-03-24T12:04:06.907+00:00Matlab: Terminate Execution by emulating CTRL+C收藏到CSDN网摘
This is a really usful trick for GUI development in Matlab. Although Matlab has some advanced methods such as Future object to run the process in background. But a simple method to mimic what the user does by pressing CTRL+C would be nice to have!
Credit goes to: https://stackoverflow.com/a/10097294/1300650
This trick has bee tested in Matlab 2020a App designer. The bad news is ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-5818426874279118862023-03-07T13:51:00.007+00:002023-03-07T13:52:19.334+00:00Matlab: convert time duration to string收藏到CSDN网摘
Matlab has its own tic/toc function to measure the running time a peice of code, which is very convenient and widely used by developers. The duration() function along with hours(), minutes(), and seconds() is another way of creating time durations explicitly. All of these duration types need to be converted to string format for displaying purpose. How can/should we convert them ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-14060827776487161442022-12-08T16:59:00.005+00:002022-12-08T17:00:10.532+00:00Find All Opened Matlab Figures收藏到CSDN网摘
Sometimes, Matlab is really good at plotting data for analysis or image processing. The simple figure() function can be used to create a new figure to plot on. Otherwise, it will plot directly on the last existing (or the current figure, which can be accessed via gcf function) figure. Moreover, the existing plotted data would be overwritten if you forgot to turn 'hold on' to preserve^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-66222868432882627492022-11-11T10:59:00.008+00:002022-11-11T10:59:57.620+00:00Generalised Conversion from Any Data Type to String in Matlab收藏到CSDN网摘
For logging and debugging purpose in Matlab, some parameter values need to be written either to the command window or an external file. To display in the command window, we have two options - disp() and fprintf(). The disp() is very convenient and works with all data types. However, we must stick to fprintf() if more flexible formats are required, such as %f, %g, %s, %d, etc. But it ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-54689968018521226752022-11-11T10:43:00.005+00:002022-11-11T10:44:26.687+00:00Get DateTime as a Formatted String in Matlab收藏到CSDN网摘
A very common task would be obtain the current timestamp while writing code in any programming languages, especially for logging and debugging purpose. Almost all the languages provide support for retrieving the current date and time using either built-in or 3rd party libs. Matlab has some built-in formats already. All we need to do is to pass the proper format number to its '^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-82960303943584375202022-10-29T17:35:00.006+01:002022-10-29T17:35:40.759+01:00Python Tip: Get Filename, Extension, Parent Folder, File Existence, and More收藏到CSDN网摘
From time to time, a very common task might be to get the file name, extension, parent folder, or checking the exitance of a file or file list. In Python, this can be done by the in-built os.path library. Here is how!
import os
# check interested files
is_file = lambda x: os.path.isfile(x)
# check if all the files in the input list exist
is_files = lambda x: all([is_file(y) for y^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-43301379287475368352022-10-27T20:50:00.006+01:002022-10-29T17:43:35.991+01:00Python Tip: Get Variable Name in Python (type of reflection?)收藏到CSDN网摘
Sometimes, you may want to get the variable name itself as a string while writing Python code. For instance, if you are going to write 'a = 2', is there a convenient way of getting the variable name '"a"' by calling a function using 'a' as the parameter?
The short answer is YES.
It's completely possible in Python! By it's a little bit tricky to do so. Generally, it can be done ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-59708277230166039872022-10-21T10:13:00.002+01:002022-10-21T10:15:01.307+01:00Get Date and Time String in Python收藏到CSDN网摘
It's a very common task that you may need the current date and time as a string, which can then be assigned as a timestamp for logging, intermidiate input deck generation, etc. In Python, there are several modules available to achieve this, such as date, time, datetime - well, it looks redudent here! The easierest way might be using the time module.
To get the time, all we need to^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-80347988011153206662022-09-30T17:27:00.006+01:002022-09-30T20:35:40.962+01:00Change Matlab Command Window's Text Colour收藏到CSDN网摘
Matlab has provided some coloured text features already. For instance, the default 'disp' or 'fprintf' will print text in balck colour, while 'warning' displays text in orange and 'error' displays text in red (yes, error also terminates your script). But someone may want more flexibilities over these default one. Fortunately, there are some work around available for this issue.
^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-13784867156214504912022-06-27T16:43:00.002+01:002022-06-28T15:15:48.603+01:00Dive into Deep Learning Online Book收藏到CSDN网摘
2本跟机器学习有关的在线电子书，涉及线性回归、多项式拟合、模型阶数选择等概念，很详细，值得精读。
Dive into Deep Learning (D2DL)
Pattern Recognition and Machine Learning (PRML)
https://zh.d2l.ai/
https://mqshen.gitbooks.io/prml/content/
^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-5972196628835343652021-11-02T11:58:00.006+00:002021-11-02T12:07:44.500+00:00Get One Line or Count the Number of Lines, Words, Characters in PowerShell收藏到CSDN网摘
PowerShell is replacing cmd.exe in the new Windows operating systems, it's more efficient and powerful than its predecessor. The only drawback might be that the commands are much longer than what we used to see in cmd.exe.
Counting the lines, words, even the characters are very useful - well, sometimes at least. This task can be easily done using some GUI software such as MS Word, ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-5908037202770942502021-10-20T10:55:00.001+01:002021-10-20T10:56:14.557+01:00Upgrade PowerShell to the Latest Version收藏到CSDN网摘
From time to time, the MS PowerShell prompts new version message as long as it was started. An usual way to upgrade would be dive into MS's github repository to download the latest release. Then, a standard installation process can be carried out the deploy the latest version on your system. However, as we are already inside the commandline there is another way of doing the same ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-81623939266216464282021-06-17T13:48:00.011+01:002021-10-20T10:58:00.172+01:00Image 2 ASCII - ascii art generator收藏到CSDN网摘
Converting images to ASCII, aka. ASCII art, has been explored by developers long time ago back to the time of DOS age. It is more about having fun but there are also some really good publications around this topic. Someone implemented online services to convert uploaded images to ASCII art like THIS one. The first answer under THIS QUESTION has a very detailed explanation and ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-29793438601002745972021-04-28T22:22:00.008+01:002021-10-20T10:59:59.441+01:00How to test if a point is inside a sector?收藏到CSDN网摘
If we have a sector (partial circle) defined by the centre C, radius R, starting angle point S, and ending angle point E. How can we test if a given point P is inside or outside the sector?
The idea is to define 2 function: the one is to test if one vector can be obtained by rotating from another vector clockwise (or anti-clockwise if needed); the other is to test if the distance ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-36740525126264611272021-04-28T22:15:00.002+01:002021-10-20T10:58:46.449+01:00How to test if a point is inside of a triangle?收藏到CSDN网摘
To determine if a point P is inside or outside a given triangle defined by 3 vertices P1, P2, and P3. The edges can be calculated first as 3 vectors:
P12 = P1-P2; P23 = P2-P3; P31 = P3-P1. Then, its a simple task.
% check if a point is within a triangle regions [p1,p2,p3]
withinTriangle = @(P,P1,P2,P3,P12,P23,P31) sign(det([P31;P23]))*sign(det([P3-P;P23])) >= 0 & ...
sign(det(^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-47320944124808505032021-01-12T13:38:00.005+00:002021-01-12T13:38:41.731+00:00Instant Update Plots in Jupyter Notebook收藏到CSDN网摘
Jupyter Notebook is a very effective toolkit for both teaching and learning. The interactive mode is straightforward for demonstrating the logic behind the code blocks and explaining how the programme works segment by segment. With the help of powerful Matlab-equivalent matplotlib library, data plotting can be easilly implemented. However, from time to time, you might miss Matlab's `^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-30514725492543374502020-11-19T14:49:00.004+00:002021-11-02T11:59:20.028+00:00Windows Terminal Shortcuts Address收藏到CSDN网摘
Windows Terminal is a nice and morden tabbed console open-sourced by Microsoft in 2019. What I like most is the capability that I can combine all my shells in one window like cmd, powershell, git bash, and WSL ubuntu shell. For my day to day work, I used Double Commander (DC) for file managedment. It's very easy to add extra shortcuts on DC's toolbar. Unfortunately, the link will ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-23116279734694153452020-11-19T11:14:00.002+00:002020-11-19T11:14:17.469+00:00Sudo apt update Failure 收藏到CSDN网摘
Deppin is an amzingly polished Linux distro built upon Debian. It now evolves to v20. Interestingly, there's a tiny bug than prevents it from updating itself.
However, there's a quick fix for that.
You might get something like:
Ign:3 https://community-packages.deepin.com/printer eagle InRelease
Err:4 https://community-packages.deepin.com/printer eagle Release
404 Not Found [IP: ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-26529302981883328062020-09-21T10:31:00.000+01:002020-09-21T10:31:01.684+01:00Create automatically updated daily archive using 7-zip and batch收藏到CSDN网摘
Since lockdown started, I switched to a laptop for my daily work and lost the directly connections to our secured network drive. Although we have alternative secured online space for file transferring, packing and uploading those files frequently is a dumb thing to do from time to time. By adding those tasks to a batch file and pressing the green button seem more sensiable to do then.^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-13439419726459734912020-09-08T12:44:00.002+01:002020-09-08T12:44:07.938+01:00Visual Studio Kept on rebuilding all projects without modifying anything收藏到CSDN网摘
I noticed vs2013 started to rebuild all my projects and their dependencies even without any code change. Interestingly, the exact same project won't be compiled on Debug mode, which suggests some differences in the settings. By changing the Tools - Options, select Projects and Solutions - Build and Run, then set "MSBuild project build output verbosity" to Diagnostic. This will output ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0tag:blogger.com,1999:blog-7524190211354587233.post-13317257674355574482020-09-02T10:46:00.000+01:002020-09-02T10:46:03.068+01:00Change the Default profile while starting Microsoft Chromium Edge Browser收藏到CSDN网摘
While the MS makes their Chromium based Edge browser better and better, the profile manager helps the users to manage their working account and personal account. It's also helpful to set which profile will be used to open links redirected from third-party applications. However, to decide which profile to be used to start Edge by default. some command line option need to be added as ^.^http://www.blogger.com/profile/07043019578098595151noreply@blogger.com0