Allen Day allenday

http://twitter.com/allenday

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allenday / canopy.py

Created February 5, 2024 05:55 — forked from gdbassett/canopy.py

Efficient python implementation of canopy clustering. (A method for efficiently generating centroids and clusters, most commonly as input to a more robust clustering algorithm.)

	from sklearn.metrics.pairwise import pairwise_distances
	import numpy as np

	# X shoudl be a numpy matrix, very likely sparse matrix: http://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.sparse.csr_matrix.html#scipy.sparse.csr_matrix
	# T1 > T2 for overlapping clusters
	# T1 = Distance to centroid point to not include in other clusters
	# T2 = Distance to centroid point to include in cluster
	# T1 > T2 for overlapping clusters
	# T1 < T2 will have points which reside in no clusters
	# T1 == T2 will cause all points to reside in mutually exclusive clusters

allenday / bq-geohash-udf.sql

Created July 2, 2021 02:59 — forked from vladaman/bq-geohash-udf.sql

Google BigQuery standardSQL UDF function to decode geohash string into bounding box and coordinates

	#standardSQL
	CREATE TEMPORARY FUNCTION geohashDecode(geohash STRING)
	RETURNS STRUCT<bbox ARRAY<FLOAT64>, lat FLOAT64, lng FLOAT64>
	LANGUAGE js AS """
	if (!geohash) return null;
	var base32 = '0123456789bcdefghjkmnpqrstuvwxyz';
	geohash = geohash.toLowerCase();

	var evenBit = true;
	var latMin = -90, latMax = 90;

allenday / tensorflow_json_parser.py

Last active January 2, 2020 09:56 — forked from sameerg07/tensorflow_json_parser.py

converts the json file downloaded using image classifer tool of dataturks to dataset folder

	#This script has been solely created under dataturks. Copyrights are reserved

	#EXAMPLE USAGE
	#python3 tensorflow_json_parser.py --json_file "flower.json" --dataset_path "Dataset5/"



	import json
	import glob
	import urllib.request

allenday / .block

Last active January 25, 2019 09:10 — forked from mbostock/.block

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license: gpl-3.0