'Squared value' diaporamas de présentation

Decision Trees

Decision Trees. References: "Artificial Intelligence: A Modern Approach, 3 rd ed " (Pearson) 18.3-18.4 http://onlamp.com/pub/a/python/2006/02/09/ai_decision_trees.html http://chem-eng.utoronto.ca/~datamining/dmc/decision_tree_overfitting.htm. What are they?. A "flowchart" of logic Example:

502 views • 41 slides

Lecture 3: The Simple Regression Model

Lecture 3: The Simple Regression Model. Wooldridge, Ch. 2. The Simple Regression Model. y = b 0 + b 1 x + u Note: 1. Now using y , x for random variables and realisations (data). 2.Also called the two-variable regression model. Some Terminology.

1.52k views • 40 slides

Expert Judgment

Expert Judgment. EMSE 280 Techniques of Risk Analysis and Management. Expert Judgment. Why Expert Judgement? Risk Analysis deals with events with low intrinsic rates of occurrence ? not much data available.

1.31k views • 37 slides

Chapter 8: Linear Regression

Chapter 8: Linear Regression. A.P. Statistics. Linear Model. Making a scatterplot allows you to describe the relationship between the two quantitative variables.

700 views • 35 slides

LSP 120

472 views • 34 slides

SOC 206 Lecture 1

SOC 206 Lecture 1. Statistics, Causation Simple Regression. Context of Discovery vs. Justification. Famous distinction by Hans Reichenbach Discovery: How do we come up with ideas Justification: How can we demonstrate that they are true. WHAT IS STATISTICS. Statistics is a language

394 views • 27 slides

Chapter 9: Regression Wisdom

Chapter 9: Regression Wisdom. AP Statistics. Issues and Problems with Regression. Subsets and curves Dangers of extrapolation Possible effects of outliers, high leverage, and influential points Problems with regression of summary data Mistakes of inferring causation.

578 views • 17 slides

207 views • 13 slides

Power Models

Power Models. Presentation 2-10. Power Models. Consider the following dataset about the cost of pizzas from Joanies Pizzaria. Of course, we start with a scatterplot. Power Models. From the scatterplot, we probably suspect it is not linear. It may be exponential or something else.

291 views • 11 slides

America, Land of How Many

America, Land of How Many. By Tyler Luptowski and Rj Bryce. Data Samples. Linear Model. Logistic Model. Exponential Model. Best Fit. Our exponential model is the best fit, with a R squared value of 90.

203 views • 8 slides

Accuracy of Prediction

Accuracy of Prediction. How accurate are predictions based on a correlation?. Accuracy depends on r XY. If we know nothing about an individual (e.g., we try to predict the IQ of a randomly selected person), we should guess the mean.

246 views • 7 slides