data mining

Jul 5th, 2016
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CMP 627 Data MiningCMP 627 Data MiningWeek 6 Homework Assignment 21CMP 627 Data Mining1. Indicate the number of clusters in the following figures using the density basedmethods. Give a brief indication of your reasoning. Note the darkness or the number ofdots indicates density. If it helps, assume density-based means DBSCAN.Answer:A) In this figure A the density-based definition clustering defines the cluster type withthe larger outer ring and the inner circle clusters. The ring that is just outlining thecentre circle has a lower density which would fit into the centre-based definition.B) In this figure B the centre-based definition clustering defines the cluster type witheach triangle defined as an individual cluster. Centre-based definition is chosen due toeach triangle cluster contains the sample centre point.2. Consider the following set of two dimens

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