Vishwanath Subramanian vishwanath79

Installing Cassandra on Mac OS X

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

	from csv import reader
	from hashlib import sha512
	import sys

	# Simple merkle tree example
	# Invoke the script by calling "python merkle_sample.py "file1.csv" "file2.csv" to compare two merkle trees
	class Merkle:

	def __init__(self, file):
	self.file = file


	#!/usr/bin/python
	# -- coding: utf-8 --
	from keras.callbacks import EarlyStopping, ModelCheckpoint

	save_early_callback = EarlyStopping(monitor='val_loss', patience=5)
	save_best_callback = \
	ModelCheckpoint('/content/model-{epoch:02d}-{val_accuracy:.2f}.f5'
	, save_best_only=True, save_weights_only=True)
	model.fit(

	#!/usr/bin/python
	# -- coding: utf-8 --
	from keras.callbacks import EarlyStopping
	save_early_callback = EarlyStopping(monitor='val_loss', min_delta=0,
	patience=3, verbose=1,
	restore_best_weights=True)
	model.fit(
	X_train,
	y_train,
	batch_size=64,

	#!/usr/bin/python
	# -- coding: utf-8 --
	save_best_callback = tf.keras.callbacks.ModelCheckpoint(
	'content/model-{epoch:02d}-{val_acc:.2f}.f5',
	monitor='val_accuracy',
	verbose=1,
	save_best_only=True,
	save_weights_only=False,
	save_freq=100,
	)

	# bully algorithm sample /no sockets
	import random


	def resurrect(x):
	if running[x] == 1:
	print("Leader is running")
	return
	print("node ", x, " back to life")
	running[x] = 1

	#%%
	import numpy as np
	import pandas as pd
	data = pd.read_csv("preprocessed_data.csv")
	data = data.sample(frac=1)

	train_size = int(0.8 * len(data))
	features = data.drop(columns=["Price"])
	targets= data["Price"]
	X_train, X_test = features.values[:train_size, :], features.values[train_size:,:]