YuehChuan YuehChuan

VSB Power Line Fault Detection

This gist contains notes and links pertaining to the VSB Power Line Fault Detection kaggle competition

Readings

[0] Analysis of Time Series Data - T. Vantuch (Thesis)

[1] A Complex Classification Approach of Partial Discharges - T. Vantuch Et. Al

How to install PyTorch on the Duckiebot

PyTorch is a Python deep learning library that's currently gaining a lot of traction, because it's a lot easier to debug and prototype (compared to TensorFlow / Theano).

To install PyTorch on the Duckietbot you have to compile it from source, because there is no pro-compiled binary for ARMv7 / ARMhf available. This guid will walk you through the required steps.

Step 1: install dependencies and clone repository

First you need to install some additional packages. You might already have installed. If you do, that's not a problem.

How to install PyTorch on the Duckiebot

PyTorch is a Python deep learning library that's currently gaining a lot of traction, because it's a lot easier to debug and prototype (compared to TensorFlow / Theano).

To install PyTorch on the Duckietbot you have to compile it from source, because there is no pro-compiled binary for ARMv7 / ARMhf available. This guid will walk you through the required steps.

Step 1: install dependencies and clone repository

First you need to install some additional packages. You might already have installed. If you do, that's not a problem.

ZeroMQ vs Redis

This document is research for the selection of a communication platform for robot-net.

Goal

The purpose of this component is to enable rapid, reliable, and elegant communication between the various nodes of the network, including controllers, sensors, and actuators (robot drivers). It will act as the core of robot-net to create a standardized infrastructure for robot control.

Requirements:

	corleone@corleone:~$ sudo apt install ros-melodic-desktop
	Reading package lists... Done
	Building dependency tree
	Reading state information... Done
	The following packages were automatically installed and are no longer required:
	amd64-microcode apg apport-symptoms aptdaemon-data command-not-found-data diffstat gettext gir1.2-goa-1.0 gir1.2-snapd-1 gir1.2-vte-2.91 gnome-control-center-faces gnome-online-accounts
	gnome-software-common intel-microcode intltool-debian iucode-tool libapt-pkg-perl libarchive-zip-perl libcgi-fast-perl libcgi-pm-perl libclass-accessor-perl libclone-perl libcolord-gtk1
	libemail-valid-perl libexporter-tiny-perl libfcgi-perl libgtop-2.0-11 libgtop2-common libio-pty-perl libio-string-perl libipc-run-perl liblist-moreutils-perl libllvm8 libnet-dns-perl
	libnet-domain-tld-perl libnet-ip-perl libnss-myhostname libparse-debianchangelog-perl libperlio-gzip-perl libsodium23 libtext-levenshtein-perl libwhoopsie-preferences0 libxatracker2 libxml-libxml-perl
	libxml-namespacesupport-

	corleone@corleone:~$ sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
	[sudo] password for corleone:
	Sorry, try again.
	[sudo] password for corleone:
	corleone@corleone:~$ sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
	Executing: /tmp/apt-key-gpghome.JtQ0TbP1kK/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
	gpg: key F42ED6FBAB17C654: public key "Open Robotics <[email protected]>" imported
	gpg: Total number processed: 1
	gpg: imported: 1
	corleone@corleone:~$ sudo apt update

	external/com_google_absl/absl/strings/string_view.h(495): warning: expression has no effect

	external/protobuf_archive/src/google/protobuf/map.h: In instantiation of 'void google::protobuf::Map<Key, T>::InnerMap::iterator_base<KeyValueType>::SearchFrom(google::protobuf::Map<Key, T>::size_type) [with KeyValueType = google::protobuf::Map<std::__cxx11::basic_string<char>, tensorflow::AttrValue>::KeyValuePair; Key = std::__cxx11::basic_string<char>; T = tensorflow::AttrValue; google::protobuf::Map<Key, T>::size_type = long unsigned int]':
	external/protobuf_archive/src/google/protobuf/map.h:400:11: required from 'google::protobuf::Map<Key, T>::InnerMap::iterator_base<KeyValueType>::iterator_base(const google::protobuf::Map<Key, T>::InnerMap*) [with KeyValueType = google::protobuf::Map<std::__cxx11::basic_string<char>, tensorflow::AttrValue>::KeyValuePair; Key = std::__cxx11::basic_string<char>; T = tensorflow::AttrValue]'
	external/protobuf_archive/src/google/protobuf/map.h:516:28: required from 'google::protob

	unset -f curl
	# included just in case
	curl https://www.google.com/search?q=hk%20police%20massacre%20polyu%27s%20students&aqs=chrome&fbclid=IwAR3q7zfXaUIqJkF0kmCop-UAdp2fUeTDK6WrRl-kDa8yPIz_N7m2cjtR8FQ[0-1118]
	# curl loop using URL globbing
	#expect output 1-1118
	#[1/10]: https://www.hongkongfp.com/2019/11/18/heartbreaking-day-polyu-student-leaders-call-public-hundreds-trapped-campus/0 --> <stdout>
	#--_curl_--https://www.hongkongfp.com/2019/11/18/heartbreaking-day-polyu-student-leaders-call-public-hundreds-trapped-campus/0

	#include <ros/ros.h>
	#include <ros/spinner.h>
	#include <ros/callback_queue.h>

	#include <std_msgs/Empty.h>
	#include <std_msgs/Bool.h>

	boost::shared_ptr<ros::AsyncSpinner> g_spinner;

	bool g_enable = false;