Please enable JavaScript.
Coggle requires JavaScript to display documents.
BD4 (Rules of sentiment analysis (Opinions are governed by some rules, e.g…
BD4
-
social media
Social media are defined as web-based services that allow users to create public or semi-public profiles, create a list of other users with whom to share content, and view their list of connections and those made by others within the system
-
publishing potential, immense impact auf viele Richtungen
-
Classifying
-
= Classifiers differ from clustering and recommender algorithms in such a way that that it has already predefined classes
ähnlich wie Cluster aber nicht mehr random, Startpunkt auswählen --> Buch bei Amazon aussuchen --> Ausgangslage für weitere Buchempfehlungen
Opinion Mining
Rule Based
-
-
Contr: large amount of resources to develop, huge computing power, very slow, extremely domain specific
Machine Learning
-
pros: existing algorithms, smaller resources, low computing power
contra: not as precise, large corpus for training, very domain specific
Modelling
Modelling involves explaining the behaviour of a system, often with a formula, sometimes with descriptive language
formula= describes distribution of data, predicts how different variables will change with one another
-
-
-
classes = Classes are built on relationship among class members, not by counting similarities
-
-
-
Pareto Principe = Power law, Predicitve Analytics = guessing
Correlation Coefficient “r” =
A measure of the strength and direction of a linear relationship between two variables
-