Examples - Aster Analytics

Teradata Aster Analytics Foundation User Guide

Product
Aster Analytics
Release Number
6.21
Published
November 2016
Language
English (United States)
Last Update
2018-04-14
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kiu1466024880662.ditamap
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AA-notempfilter_pdf_output.ditaval
dita:id
B700-1021
lifecycle
previous
Product Category
Software

Examples 1 and 2 analyze a social network of users (for example, in an application such as Twitter) as shown in the following figure and their relationships as followers and leaders based on the 'likes' each user gets from others.

pSALSA Example Diagram (Network Of Users)

The preceding figure is converted to the following figure, which is a bipartite representation of the same network. The nodes on the left side of the following figure are source vertices, or hubs, and constitute the 'followers' column in Table bbb. The nodes on the right side of the following figure are the target vertices, or authorities, and constitute the 'leaders' column in Table bbb.

pSALSA Example Diagram (Bipartite Representation)

The pSALSA algorithm assigns scores to both sides. In the output table (Output), the hub_followers column shows similar users for each follower based on the hub_score. Likewise based on the authority_score, leaders who are close to followers are output in the authority_leader column. A higher score indicates greater similarity. Typically the authority_score is interpreted as user recommendations (in this case the closer leader) and the hub_score is interpreted as user similarity.

Because the function is stochastic, the output can vary with each run.