Hierarchical clustering Study guides, Class notes & Summaries

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAM 2 LATEST VERSIONS 300 QUESTIONS AND CORRECT ANSWERS ASSURED A+. VERSION A What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully ...

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5 steps to building a machine learning model - 1. choosing a class of model 2. choose hyperparameters 3. arrange data 4. fit the model 5. predict a silhouette score of 1 is the [best/worst] and -1 is the [best/worst] score - best, worst basic idea of regression - we have some X values called features and some Y value, the variable we are trying to predict Difference between unsupervised and supervised learning - unsupervised: you have an X but no Y supervised: you have an X and a Y Ima...

What does modality refer to? How does it appear on ER diagram? - ANSWERRefers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key value 4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is updated 2. Foreign key i...

Table of Contents Part 1: Introduction. The big picture of artificial intelligence and machine learning — past, present, and future. Part 2.1: Supervised Learning. Learning with an answer key. Introducing linear regression, loss functions, overfitting, and gradient descent. Part 2.2: Supervised Learning II. Two methods of classification: logistic regression and support vector machines (SVMs). Part 2.3: Supervised Learning III. Non-parametric learners: k-nearest neighbors, decision tree...

What is Big Data? - Answer-Big data is a term which is used to describe any data set that is so large and complex that it is difficult to process using traditional applications. T/F: Big Data is an objective term? - Answer-False. Describe at least three sources of Big Data. - Answer-Archives, Machine logs, Public Web, Sensor Data, Social Media State and explain the characteristics of Big Data: Volume - Answer-The vast amount of data that must be dealt with. State and explain the character...

What is supervised learning? A type of machine learning which is used when we want to predict a certain output from a given input and have examples of input/out pairs. The training set we feed into the algorithm includes the desired solutions (labels). labelled data: each instance comes with the expected output What are the two types of supervised machine learning? (1) classification - binary classification: 2 classes - multiclass classification: classification between more than 2 ...

WPC 300 Final Exam (practice questions and answers) A-Graded 2024/2025 analytics - CORRECT ANSWER-the process of developing actionable decisions or recommendations for actions based upon insights generated from historical data primary data - CORRECT ANSWER-data collected specifically for the research problem at hand (ex: survey, interviews) secondary data - CORRECT ANSWER-data collected for some purpose other than the problem at hand (ex: firm's proprietary data, internet data, stock...

RCDD TEST QUESTIONS (TOPIC 15 - TOPIC 21) WITH SOLVED SOLUTIONS. What is the recommended distance between ceiling mounted speakers in a hallway with heavy traffic? A. 2.4 m (8 ft) B. 3.7 m (12 ft) C. 4.9 m (16 ft) D. 6 m (20 ft) A. 2.4 m (8 ft) A space has all hard surfaces including architecture and furnishings. The audio programming produced from the distributed sound system has become unintelligible. Which of the following will NOT mitigate the problem? A. Add tapestries to the ...

What does modality refer to? How does it appear on ER diagram? - ANSWER- Refers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key value 4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is updated ...