Brandon Victor Multihuntr

A deep learning researcher with an interest in algorithms. I never get as much done as I'd hoped.

Multihuntr / partitioned.py

Created February 4, 2021 02:47

Sqlalchemy create partitioned tables in a for loop in Postgresql database

	# BIG NOTE:
	# I made this becuase I thought the method was interesting. It's not useful in it's current form.
	# If you can, use an index instead. https://stackoverflow.com/a/27895337

	from sqlalchemy import Column, Integer, Float, ForeignKey, event, DDL
	from sqlalchemy.schema import CreateSchema
	from sqlalchemy.dialects.postgresql import DOUBLE_PRECISION
	from sqlalchemy.ext.declarative import declarative_base, declared_attr

	Base = declarative_base()

Multihuntr / mean_avg_precision.py

Created July 28, 2021 11:36

Mean average precision for object detection

	# Reimplementation of: https://github.com/aladdinpersson/Machine-Learning-Collection/blob/master/ML/Pytorch/object_detection/metrics/mean_avg_precision.py
	# Now with more vectorisation!

	def precision_recall_curve_th(is_tp, confs, n_true, eps=1e-8):
	# Sort by confs
	order = (-confs).argsort()
	is_tp = is_tp[order]
	confs = confs[order]

	# Cumulative sum true positives and number of predictions

Multihuntr / mat3.py

Last active January 7, 2022 01:31

Random Affine Crop in the style of Albumentations for a Rasterio Dataset with minimal dependencies

	# Utility functions for managing 3x3 matrices for cv2.warpAffine in pure numpy

	import numpy as np


	def identity():
	return np.eye(3, dtype=np.float64)


	def affine(A=None, t=None):

Multihuntr / environment.yml

Created June 20, 2024 09:38

Run Stable Diffusion 3 from commandline with limited resources.