Forecasting vs prediction
Cross sectional data
Time series data
Panel data
INFS 768 Predictive Modeling
Lecture 2
Predictive Modeling Training Data
Training Data
inputs
target
Training example: categorical (nominal or
ordinal numbers) or real-valued
.
INFS 768 Predictive Modeling
Lecture 5
Review
How to do data mining
3
Process of Analytics and Modeling
Problem Identification
Data Gathering and Extraction
Data Processing
QC (outliers, missing data, distribution )
Numeric recoding
Missing value imputati
INFS 768 Predictive Modeling
Lecture 3
Review
Assessing the accuracy of the overall model
We compute the Residual Standard Error or Rootmean-squared error
These measures work for
all regression based
algorithms
R-squared of fraction of variance explained
Predictive analytics
Why data analytics
Big data.
In the past 50 years, the New York Times produced 3
billion words.
Twitter users produce 8 billion words every single
day.
Organizations have access to a wealth of information, but
they cant get value ou
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 3 Solutions
10/05/2015
Exercise 1 Find A B, A B, A \ B, B \ A, A B, P(A), P(B) for the following pairs of sets:
a) A = cfw_3, 2, 6, B = cfw_4, 5, 6, 2
i. A B = cfw_2, 3, 4, 5, 6
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 4 Solutions
10/07/2015
Exercise 1 Determine if the following functions are injective, surjective, or bijective (or nothing).
a) f (x) = 6x + 1 from R to R
i. injective: yes sinc
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 1 Solutions
09/05/2015
Exercise 1 State the converse (i), contrapositive (ii), and inverse (iii) of each of these conditional
statements.
a) If it snows today, I will ski tomorr
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 2 Solutions
09/016/2015
Exercise 1 Determine the truth value of each of these statements if the domain of each variable
consists of all real numbers (R).
a) x(x2 = 2) - True (x
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 9 Solutions
12/07/2015
Exercise 1 For each of the following integers, determine if they are prime, or if they are not, give
their prime factorization.
a) 97 is prime
b) 126 = 2
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 5
10/22/2015
Exercise 1
4
12 4
a) There are 13
=
13
possibilities
for
the
four
of
a
kind,
and
= 48 possible choices for
1
4
1
1
the fifth card, hence 13 48 = 624 distinct suc
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 1
08/28/2015
Exercise 1 State the converse, contrapositive, and inverse of each of these conditional statements.
a) If it snows today, I will ski tomorrow.
b) I come to class wh
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 2
09/09/2015
Exercise 1 Determine the truth value of each of these statements if the domain of each variable
consists of all real numbers (R). Remember to justify your answers!
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 5
10/16/2015
Exercise 1 Consider a standard 52-card deck. How many distinct poker hands are
a) Four of a kind?
b) Full houses?
c) One pair?
A full house is a hand with three car
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 7
11/04/2015
Exercise 1 Consider the statement 2n > n + 9 for all n b, n N. If this is true, determine
the value of b and then prove it by induction.
Exercise 2 Consider the sta
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 3
09/25/2015
Exercise 1 Find A B, A B, A \ B, B \ A, A B, P(A), P(B) for the following pairs of sets:
a) A = cfw_3, 2, 6, B = cfw_4, 5, 6, 2
b) A = cfw_a, b, d, e, B = cfw_b, d
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 4
09/30/2015
Exercise 1 Determine if the following functions are injective, surjective, or bijective (or nothing).
a) f (x) = 6x + 1 from R to R
b) f (x) = x 5 from N to Z
c) f
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 8
11/20/2015
Exercise 1 Find a div m and a mod m for the following values of a and m:
a) a = 77, m = 19
b) a = 123, m = 12
c) a = 98, m = 23
d) a = 1023, m = 101
e) a = 35, m =
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Test 1 Solutions
09/22/2015
Exercise 1 We will write a truth table for (p r) (q r) to show that it is contingent.
Exercise 2 Consider a variable x in the domain of all dogs. We will use th
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 6
10/30/2015
Exercise 1 Prove that if n is an even natural number, then 3n + 4 is also an even natural number.
Exercise 2 Prove that every odd natural number is equal to the dif
MATH 201: Introduction to Discrete Mathematics
Edoardo Persichetti
Assignment 9
11/30/2015
Exercise 1 For each of the following integers, determine if they are prime, or if they are not, give
their prime factorization.
a) 97
b) 126
c) 1111
d) 113
Exercise
JavaScript an object-oriented computer programming language
commonly used to create interactive effects within web browsers.
VBScript ("Visual Basic Scripting Edition") is an Active Scripting
language developed by Microsoft that is modeled on Visual Basic
Section 1.2 Applications of Linear Equations
Objectives
Write mathematical statements given a verbal description.
Set up a linear equation from a verbal description and solve.
Set up and solve mixing problems.
Set up and solve problems involving dista
CHAPTER 1 Equations, Inequalities, and Applications
Section 1.1 Linear Equations
Objectives
Determine if a given equation is linear.
Solve linear equations of all types.
Solve equations that may be rewritten to be linear.
Preliminaries
A linear equatio
Calculus 1, Exam 3 review
Glenn Berman
January 7, 2016
NO work should be done on this paper. Use your own paper for
your work. Problems should be in numerical order.
1. A boat is pulling a rope out from a dock. the rope runs through
a ring on the dock 12
Calculus 1, Final review
Glenn Berman
May 2, 2016
NO work should be done on this paper. Use your own paper for
your work. Problems should be in numerical order.
1. Sketch the graph of a function with the following properties
x = 2 is a vertical asymptote
Survey Report on
Assignment Mobile SMS
Packages Preference
100 students (randomly selected) of JUW
took a survey for Mobile SMS Packages
service preference. With a data so obtained
we are going to observe and find out the
range at which Confidence Interva