50 Telents - Shared Thoughts Today
2020-12-15
Articles
52
Pinned
本页记录一些分享。不时更新。
Dec 15 2020
50 telents lol (Source: 【Vtuber 48人+αの】KING【Kanaria】)
Youtube player container【Vtuber 48人+αの】KING【Kanaria】
Back number - 水平線
2020-08-31
Stuff
337
偶遇了这首治愈的歌。
Youtube player containerBack number - 水平線
一开始看到 MV 我还在想真是很省经费。但从主角收伞的那一刻就变得有趣(有趣?)起来了。一开始一直是被画面吸引,但注意到歌词后就有点被击中的感觉。
Followers
2020-07-16
Articles
587
一开始我是被 PV 吸引了。有点意思,我想。女主有点酷;虽然 PV 完全意味不明,但是就是很戳。大概是因为色彩主题和几分前卫的内容。
第一集看下来,女主(似乎中文翻译应该是叫夏目?)果然很酷,而且穿
First Taste Of Magia
2020-02-04
Articles
332
最近看魔法记录,一不小心倒把小圆从头看了一遍。
感触还是很深。记在另一篇里了。
本篇想讲的,是魔法记录前三集的观感。
画面说得过去,比较想说的是分镜演出。
魔法记录的分镜演出似乎试图走意识流路线
Tic-Tac-Toe Online
2019-10-10
Tech
252
Tic-Tac-Toe Online Server
Base on the Tic-Tac-Toe Game of CS188, Berkeley, I develop an online version of Tic-Tac-Toe. Now your agent can play with my agent online!
I think it is a good way to check whether our agents are optimal
Shenyang2019.icpc D Fish Eating Fruit
2019-09-18
ACM
419
The Question
Fish eating fruit on jisuanke
Given an undirected acyclic graph G, all possible path P in the graph, calculate:
The first taste
In the contest, a handsome foriegn teammate conviced me that this problem can be solve using LCA. I tried. And it
R-CNN
2019-07-07
Computer Vision
2687
Overview
Regions with CNN features:
Efficient Graph Based Image Segmentation
use disjoint set to speed up merge operation
Selective Search
HOG (Histogram of Oriented Gradient)
Multiple criterions (color, texture, size, shape) to merge regions
AlexNet/VGG16
R-CNN
Notice that many
SIFT
2019-07-03
Computer Vision
389
Useful Materials
Distinctive Image Features from Scale-Invariant Keypoints[1] by David G. Lowe.
SIFT(Scale-Invariant Feature Transform)[2] on Towards Data Science.
The SIFT (Scale Invariant Feature Transform) Detector and Descriptor[3].
Notes
Uses DoG (Difference
Image Processing - Noise and denoise
2019-03-20
Computer Vision
455
Types of Noise
Additive noise
Additive noise is independent from image signal. The image g with nosie can be considered as the sum of ideal image f and noise n.[1]
Multiplicative noise
Multifplicative noise is often dependent on image signal. The relation of image and
Greek Alphabet
2019-03-19
Others
81
Greek Alphabet
Letter (Capital Case)
Letter (Lower Case)
Name
English Equivalent
alpha
a
beta
b
gamma
g
delta
d
epsilon
e
zeta
z
eta
h
theta
th
Decision Tree
2019-03-16
Machine-Learning
1037
Information Content
where,
I : the information content of X. An X with greater I value contains more information.
P : the probability mass function.
: b is the base of the logarithm used. Common values of b are 2 (bits),
AutoTag
2019-03-12
Tech
364
AutoTag
AutoTag is a program that generate tags for documents automatically. The main process includes:
Participle (N-gram + lookup in dictionary)
Generate bag-of-words for each document.
Calculate term frequency and inverse document frequency.
Pick top x words with greater
w3m
2019-03-01
Tech
104
w3m: WWW wo Miru
(c) Copyright Akinori ITO
w3m is a pager with WWW capability. It IS a pager, but it can be used as a text-mode WWW browser.
Keyboard Shortcuts
Shortcut
Action
Level
H
Help
Brower
q
Quit w3m
More Blogs
2019-02-12
Misc
64
Friends' Blogs
EquimA Kernel Implementation
長門有希An Outstanding ACMer
Bug ZhangA Great Web Master
Mr. ZhuA Dreamer
Favorite Blogs
CHARON(カロン)同人サークル「CHARON」の公式サイト
海底囚人海底囚人の趣味の個人サイトです
Mount NTFS in Linux and Compatible with Window
2019-02-04
Tech
682
Permission Control for NTFS
We often encounter the problem that to mount NTFS under Linux means no permission control. But that is not true.
According to JanC's Answer on AskUbuntu:
Contrary to what most people believe, NTFS is a POSIX-compatible filesystem, and it is
iptables basic
2018-12-27
Tech
171
List
# list filter table
sudo iptables -L
# list nat table
sudo iptables -L -t nat
Redirect
# Redirect locally
sudo iptables -A OUTPUT -t nat -p tcp --src 127.0.0.1 --dport 80 -j REDIRECT --to-port 8080
Piano Basic
2018-12-24
Others
203
Major and Minor
Step
The step between each note below is a half:
C C#(Db) D D#(Eb) E F F#(Gb) G G#(Ab) A A#(Bb) B C
Steps in Major and Minor
S: a half step
T: a
Bash Basic
2018-11-27
Tech
625
Cheatsheet: Bash scripting cheatsheet
Substitution, dirname, basename and suffix
Substitution can be used to get path and short filename.
filename=a/b/c/name.file
echo ${filename#*/} # b/c/name.file
echo ${filename##*/} # name.file
ffmpeg basic
2018-11-26
Tech
388
Input and Output
$ ffmpeg -i input.mp4 output.mp4
Cutting Video or Audio
Begin and length:
$ ffmpeg -i input.mp4 -ss 00:00:10 -t 01:00:10 output.mp4
Beginning time and ending time:
$ ffmpeg -i input.mp4 -ss
Setup Tensorflow GPU
2018-08-26
Tech
538
0. install GPU drivers
sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt update
sudo apt install nvidia-390
1. install cuda tookit and cudnn SDK (and CUPTI)
Following the instructions at Installing Tensorflow on Ubuntu.
# Adds NVIDIA package repository.
sudo apt-key
Convolutional Neural Network
2018-08-19
Machine-Learning
333
This article is my reflection on my previous work FaceLock, a project to recognize user's face and lock the computer if the user doesn't present in a certain time. CNN is used to recognize different faces. I watch the Coursera course Convolutional Neural Networks by
Mathematical Basis - Squashing Function
2018-08-11
Machine-Learning
444
This article is about some squashing functions of deep learning, including Softmax Function, Sigmoid Function, and Hyperbolic Functions. All of these three functions are used to squash value to a certain range.
Softmax Function
Softmax Function: A generalization of the logistic function that "squashes" a
Recurrent Neural Network
2018-07-30
Machine-Learning
388
This article is my learning note of the coursera course Sequence Models by Andrew Yan-Tak Ng.
There are two typical RNN units of the hidden layers of the RNN according to Andrew Ng. One is GRN (Gated Recurrent Unit), the other is LSTM (Long Short
3D - Transformation and Lighting
2018-05-06
Tech
2332
Transformation
Defines a struct ObjectProperty as follow:
property
type
comment
rotation
vec3
The object's rotation in its object center.
scale
vec4 / vec3
The object's scale level in its object center.
translation
vec3
The object's relative position to the
Quicksort
2018-04-21
Algorithm
2023
Time Complexity
With partition, the elements compared each time are as follow:
n, n/2, n/2, n/4, n/4, n/4, n/4, ..., 1, 1, ..., 1 (n ones)
And their sum is:
n, n,
Cpp Master
2018-04-03
Tech
1260
以下皆为在开发我的 C++ 库 donnylib 的时候遇到的问题。 (一天遇到这么多 weird problems 也是很走运了)
donnylib : https://github.com/Donny-Hikari/donnylib
Weird Template Subclass
如下的程序会导致无法自动推断模板类型。(编译环境
AdaBoost
2018-03-30
Machine-Learning
1004
Python 实现: AdaBoost - Donny-Hikari - Github
Introduction
AdaBoost 是 Adaptive Boosting 的简称。 Boosting 是一种 Ensemble Learning 方法。 其他的 Ensemble Learning 方法还有 Bagging, Stacking 等。 Bagging, Boosting, Stacking 的区别如下:
Bagging:
Equal weight voting. Trains
Android Library and Proguard
2018-01-11
Tech
367
Android Library
To build a android library project, simply change the following line in build.gradle (Module):
apply plugin: 'com.android.application'
to:
apply plugin: 'com.android.library'
To pack the library into a jar file, add these lines to build.gradle
Classification And Overfitting
2017-11-20
Machine-Learning
658
This is a learning note of Logistic Regression of Machine Learning by Andrew Ng on Coursera.
Hypothesis Representation
Uses the "Sigmoid Function," also called the "Logistic Function":
Which turn linear regression into classification.
Sigmoid function looks like this:
give us the probability that
VJ193259 C Asa's Chess Problem
2017-10-29
ACM
2192
Concept
上下界网络流
顾名思义,比普通的网络流多出了下界。
考虑将下界的流量限制进行转化。将原来的边(e, v1->v2)拆边,拆出一条上界为 max-min 的边(e1),和一条上界为 min 的边(e2, 虚拟存在
HDU-5383 - Yu-Gi-Oh! - 最小费用网络流
2017-10-27
ACM
2419
Problem
合怪升级,每只怪有他的等级和攻击力,以及是否为 tuner monster. 合怪必须一只 tuner monster 与一只 non-tuner monster 合,并且他们的等级之和必须等于合成的怪。只有特定等级和攻击力的怪可以被合成。某些合成怪必须
莫比乌斯反演
2017-10-25
Algorithm
336
Introduction
最精彩的证明是自动证明。今天在知乎上看到的一位大佬对莫比乌斯反演的证明让我体会到了数论的神奇。坚定了我投靠数学的决心。
Mobius Inversion Formula
若存在
则有
反之亦然。
Basic Concept
1. Convolution /
VJ193259 I - A Boring Problem
2017-10-23
ACM
875
Problem
给定数字串 S,求如下表达式的值:
Solution
用前缀和转化该式。令 ,
则 .
原式转化为:
二项展开,得:
将内外求和对调,使得可以预处理前缀和的和的p次方。式子化为:
FaceLock - 脸部识别锁屏软件
2017-10-20
Tech
1916
最近(上个月)想研究一下人脸识别。人脸检测。找了下网上的资料,有不少都是介绍怎么用现成的模块识别的。但是我想了解的是用神经网络进行人脸识别,并且希望能够更多地接触神经网络。于是往基于TensorFlow框架的人脸
SCU-4444 - Travel - 补图最短路
2017-08-27
ACM
-
HDU-5383 - Yu-Gi-Oh! - 最小费用网络流
2017-08-26
ACM
-
VJ-180367-B 神奇的%系列二 - 莫队算法
2017-08-24
ACM
-
POJ-1459 - Power Network - 网络流
2017-08-23
ACM
-
VJudge 173751 B - R2D2 and Droid Army - RMQ & Sparse Table
2017-07-30
ACM
-
VJ 172735 F - Drying; 从TLE到刚好AC再到妥妥AC; 以及超级巨坑iostream
2017-07-25
ACM
-
VJ 172735 A - Can you find it? - 二分查找
2017-07-25
ACM
-
终于完成了博客的雏形框架搭建
2017-01-25
Articles
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