tuxdna

# find the number of pages in pdf file
qpdf --show-npages file_name.pdf

# split into multiple pages using first-to-last range, where first page is 1 and last page is 4
pdftoppm -jpeg -f 1 -l 4 some-file.pdf p

# combine into single pdf
convert p-1.jpg p-2.jpg p-3.jpg p-4.jpg some-file-downsized.pdf

tuxdna

import io.reactivex.rxjava3.core.Flowable;
import io.reactivex.rxjava3.core.Maybe;
import io.reactivex.rxjava3.core.Observable;
import io.reactivex.rxjava3.core.Scheduler;
import io.reactivex.rxjava3.parallel.ParallelFlowable;
import io.reactivex.rxjava3.schedulers.Schedulers;
import org.apache.commons.lang3.tuple.ImmutablePair;

import java.time.LocalTime;
import java.util.concurrent.ExecutorService;

tuxdna

How to play audio on multiple devices on your Ubuntu machine?

List sources

$ pacmd list-sources |grep name:
	name: <bluez_sink.00_00_00_00_D2_89.a2dp_sink.monitor>
	name: <alsa_output.pci-0000_00_1f.3.analog-stereo.monitor>

tuxdna

# -*- coding: utf-8 -*-

u"""
Beta regression for modeling rates and proportions.

References
----------
Grün, Bettina, Ioannis Kosmidis, and Achim Zeileis. Extended beta regression
in R: Shaken, stirred, mixed, and partitioned. No. 2011-22. Working Papers in
Economics and Statistics, 2011.

tuxdna

https://twitter.com/goodfellow_ian/status/1127994332416364549?s=19

tuxdna

Python Data:

Dimension: 2 x 768

[array([-7.3584e-01, -1.9531e-03, -6.8970e-03, -6.0303e-01, -2.1008e-01,
        -4.2114e-03,  2.0935e-02,  3.6157e-01, -1.7712e-01, -3.5449e-01,
        -4.4629e-01, -1.0791e-01,  2.7563e-01,  1.0791e-01, -3.0664e-01,
        -6.1676e-02, -2.9468e-01,  2.1594e-01, -1.3232e-01,  1.3171e-01,
 -4.1772e-01, 9.2346e-02, -4.5239e-01, -1.3147e-01, 2.9175e-01,

tuxdna

• My project - https://github.com/tuxdna/awaaz

Other similar work:

• https://willdrevo.com/fingerprinting-and-audio-recognition-with-python/

• http://vasanthkalingeri.github.io/CommercialDetection/

• Ad-Net: Audio-Visual Convolutional Neural Network for Advertisement Detection In Videos

tuxdna

# find . -name "Screenshot*.png" -exec python3 crop-all.py "{}" \;

import sys
import os
import subprocess

top_left = (33, 213)
bot_right = (910, 780)
width = bot_right[0] - top_left[0]

tuxdna

import tensorflow as tf

tf.reset_default_graph()
s1 = tf.Session()
g = tf.get_default_graph()

foo_var = tf.Variable(42, name='foo')
assign_14 = foo_var.assign(14, name="assign_14")
assign_17 = foo_var.assign(17, name="assign_17")

tuxdna

Setup JanusGraph with HBASE backend

Install following

• hbase-1.2.9
• janusgraph-0.2.2-hadoop2

HBASE Setup and inspection