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15 Questions

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181 Lec - PPT6

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Questions and Answers

Which method is used to divide a group of objects into clusters so that the objects within a cluster are similar but objects taken from different clusters are dissimilar?

Cluster Analysis (correct)

Data Visualization

HTS Data Sets

Data Mining

What is the purpose of selecting a representative subset of compounds in cluster-based compound selection?

To calculate simple statistics

To generate descriptors for each compound

To group together similar objects (correct)

To divide the molecules into subsets

What are the key steps involved in cluster-based compound selection?

Calculate similarity, select representative subset, generate descriptors

Generate descriptors, calculate similarity, select representative subset (correct)

Calculate similarity, generate descriptors, select representative subset

Select representative subset, generate descriptors, calculate similarity

Which method aims to find a line that best separates the active and inactive molecules?

Discriminant Analysis Signup and view all the answers

What does the discriminant function in a linear discriminant analysis represent?

The value computed for a new molecule Signup and view all the answers

What type of neural network consists of layers of nodes with connections between all pairs of nodes in adjacent layers?

Feed-Forward Neural Network Signup and view all the answers

What is the key objective of Data Mining Methods?

To identify relationships in large, multidimensional data sets Signup and view all the answers

Which method measures the intercluster distance as the average of the distances between all pairs of compounds in the two clusters?

Group average method Signup and view all the answers

How can the appropriate number of clusters be determined in hierarchical clustering?

By selecting a level from the hierarchy Signup and view all the answers

In cell-based or partitioning methods, how is the multidimensional space divided into cells?

By dividing each property into a series of value ranges Signup and view all the answers

Which method maps a multidimensional data set to a lower 2D or 3D space to visualize it?

Multidimensional scaling Signup and view all the answers

Which technique attempts to find a boundary or hyperplane that separates two classes of compounds?

Support Vector Machines Signup and view all the answers

What is the purpose of ensemble approaches in machine learning?

To create collections of trees Signup and view all the answers

What is the main disadvantage of Support Vector Machines (SVM)?

It is a black box method Signup and view all the answers

What is the purpose of modifying the vectors of the winning node and its neighbors in a Kohonen network?

To create regions containing similar nodes Signup and view all the answers