correlation
a mutual relationship or connection between two or more things
correlation does not mean
causation
cross tabulation
groups variables to understand the correlation between different variables. It also shows how correlations change from one variable grouping to another. It is usually used in statistical analysis to find patterns, trends, and probabilities within raw data
Nearest Neighbor Search
A proximity search aimed to optimize how to find the closest point to another given point
Standard approach to nearest neighbor
Every point is of equal weight
weighted approach to nearest neighbor
Every point is given a unique preference
Benefits of NN
Define similarities, Typically Very Visual, Reduces chance for irrelevant attributes/data
there is no mathematical formula to figure out what your nearest neighbor is
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euclidean distance
a direct distance between 2 points
manhattan distance
calculating the distance across and up and down
Cluster
collection of data objects that are similar to each other
what is the most popular online activity
social networking
what is the social media analytics process
capture, understand, and present
capture
Identify conversations on social media platforms related to its activities and interests
understand
Clean data by using some statistical methods and other techniques from text, data mining, machine translation, network analysis
present
Summarize and evaluate the finding
triggers
An automatic response to certain activities on particular data
event trigger
an event happens that causes something; ex: your GPA
data trigger
data situation that happened; ex: your grade
dashboards
a collection of widgets that give you an overview of the reports and metrics you care about most
Key Performance Measure (KPI)
A measurable value that demonstrates how effectively a company is achieving key business objectives