smrjans

import numpy as np
import pdb

from sklearn.datasets import make_classification
from sklearn.mixture import GMM


def fisher_vector(xx, gmm):
    """Computes the Fisher vector on a set of descriptors.

smrjans

#A Collection of NLP notes

##N-grams

###Calculating unigram probabilities:

P( w_i ) = count ( w_i ) ) / count ( total number of words )

In english..

smrjans

from keras.models import Sequential
from keras.layers import Dense

x, y = ...
x_val, y_val = ...

# 1-dimensional MSE linear regression in Keras
model = Sequential()
model.add(Dense(1, input_dim=x.shape[1]))
model.compile(optimizer='rmsprop', loss='mse')

smrjans

# Mathieu Blondel, September 2010
# License: BSD 3 clause

import numpy as np
from numpy import linalg
import cvxopt
import cvxopt.solvers

def linear_kernel(x1, x2):
    return np.dot(x1, x2)

smrjans

# Mathieu Blondel, September 2010
# License: BSD 3 clause

import numpy as np
from numpy import linalg
import cvxopt
import cvxopt.solvers

def linear_kernel(x1, x2):
    return np.dot(x1, x2)

smrjans

import random
import pandas
import numpy as np
from sklearn import metrics, cross_validation

import tensorflow as tf
from tensorflow.contrib import layers
from tensorflow.contrib import learn

random.seed(42)

smrjans

Phoenix/Spark demo

• These demo is part of a webinar on 'HBase for Mission Critical Applications'
• The webinar recording /slides are available at http://hortonworks.com/partners/learn/#hbase2
• The Ambari service for OpenTSDB is available at https://github.com/abajwa-hw/opentsdb-service
• The full list of available workshops is available at http://hortonworks.com/partners/learn

Option 1: prebuilt VM

There is a prebuilt Centos 6.5 VM with the below components installed:

• HDP 2.3.0.0-1754
• Spark 1.3.1

smrjans

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

smrjans

Virtual Hosts on nginx (CSC309)

When hosting our web applications, we often have one public IP address (i.e., an IP address visible to the outside world) using which we want to host multiple web apps. For example, one may wants to host three different web apps respectively for example1.com, example2.com, and example1.com/images on the same machine using a single IP address.

How can we do that? Well, the good news is Internet browsers