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View gist:35707b81f063b0c53aaa851b23d2f15d
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I hereby claim:
* I am herrbuerger on github.
* I am herrbuerger (https://keybase.io/herrbuerger) on keybase.
* I have a public key ASDehSwsfC_aKN2WUeEHyWdANSMW8ppk7RjIDs8tFXekTQo
To claim this, I am signing this object:
@herrbuerger
herrbuerger / postgres-cheatsheet.md
Created Dec 8, 2016 — forked from Kartones/postgres-cheatsheet.md
PostgreSQL command line cheatsheet
View postgres-cheatsheet.md

PSQL

Magic words:

psql -U postgres

If run with -E flag, it will describe the underlaying queries of the \ commands (cool for learning!).

Most \d commands support additional param of __schema__.name__ and accept wildcards like *.*

@herrbuerger
herrbuerger / _euclidean.c
Created Jun 1, 2014
Squared euclidean distance calculation (C extension for Python)
View _euclidean.c
#include <Python.h>
#include <numpy/arrayobject.h>
#include "euclidean.h"
/* Docstrings */
static char module_docstring[] =
"This module provides an interface for calculating squared euclidean distance";
static char euclidean_docstring[] =
"Calculate the squared euclidean distance of two 128-dimensional vectors";
View gist:6cbeada92901a282c957
from annoy import AnnoyIndex
a = AnnoyIndex(3)
a.add_item(10, [1, 0, 0])
a.add_item(11, [0, 1, 0])
a.add_item(13, [0, 0, 1])
a.build(-1)
print a.get_nns_by_item(13, 10)
print a.get_nns_by_item(1, 10)
View gist:e4452d55ffb03a53d423
from annoy import AnnoyIndex
index = AnnoyIndex(1)
for x in range(10000):
id = "%d000%d" % (x,x)
index.add_item(int(id),[x])
View gist:5f22ee159d0df800c844
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@herrbuerger
herrbuerger / gist:10961577
Last active Oct 28, 2015
Rotating snapshots for Elasticsearch
View gist:10961577

Rotationg snapshots for Elasticsearch (poor-man's version)

This is a very basic method to do rotating snapshots for Elasticsearch. For this to work you will need to have jq installed (http://stedolan.github.io/jq/).

PLEASE, PLEASE, PLEASE don't put this blindly in your commandline and execute it :)

curl -s -S -XGET "localhost:9200/_snapshot/my_s3_repository/_all?pretty=true" | jq '.snapshots[] | .snapshot + " " + .end_time' | sed 's/^.\(.*\).$/\1/' | sort -k 2 -r | awk '{ if (NR > 1) { system("curl -XDELETE " "localhost:9200/_snapshot/my_s3_repository/"$1) } } END { system("curl -XPUT " "localhost:9200/_snapshot/my_s3_repository/`date +\%s`") }'

Details

View gist:9366299
from math import sqrt
def confidence(ups, downs):
n = ups + downs
if n == 0:
return 0
z = 1.96 #1.96 = 95%
phat = float(ups) / n
View gist:9249908
➜ sample imagedups . --search -f 92bc12786d430083be1e166a2174b4888ba0b4ba.jpg
92bc12786d430083be1e166a2174b4888ba0b4ba.jpg
Traceback (most recent call last):
File "/usr/local/bin/imagedups", line 228, in <module>
prog.main()
File "/usr/local/bin/imagedups", line 60, in main
self.cmd_search()
File "/usr/local/bin/imagedups", line 90, in cmd_search
self.compare_with_db(hashdb, self.args.samplefile)
File "/usr/local/bin/imagedups", line 193, in compare_with_db
View gist:7009531
<context-param>
<param-name>net.myrrix.web.InitListener.USER_NAME</param-name>
<param-value>admin</param-value>
</context-param>
<context-param>
<param-name>net.myrrix.web.InitListener.PASSWORD</param-name>
<param-value>password</param-value>
</context-param>
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