We're sorry but this page doesn't work properly without JavaScript enabled. Please enable it to continue.
Feedback

Introduction to sentiment analysis

Formale Metadaten

Titel
Introduction to sentiment analysis
Untertitel
with spaCy
Serientitel
Anzahl der Teile
132
Autor
Lizenz
CC-Namensnennung - keine kommerzielle Nutzung - Weitergabe unter gleichen Bedingungen 3.0 Unported:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen und nicht-kommerziellen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen und das Werk bzw. diesen Inhalt auch in veränderter Form nur unter den Bedingungen dieser Lizenz weitergeben
Identifikatoren
Herausgeber
Erscheinungsjahr
Sprache

Inhaltliche Metadaten

Fachgebiet
Genre
Abstract
Sentiment analysis aims at extracting opinions from texts written in natural language, typically reviews or comments on social sites and forums. SpaCy already provides mechanisms for dealing with natural languages in general but does not offer means for sentiment analysis. This talk gives a short introduction to sentiment analysis in general and shows how to extract topics and ratings by utilizing spaCy's basic tools and extending them with a lexicon based approach and simple Python code to consolidate sentiments spread over multiple words. Topic covered are: What is sentiment analysis? Levels of sentiment detection Representing opinions Splitting texts in sentences and words. Finding the base word (lemma) Extending spaCy's pipeline and tokens Matching words to topics and ratings Combining multiple words to a rating Code examples are introduced and explained using a Jupyter notebook that can be used as basis for your own analysis. As additional twist the analyzed texts are not in English but German to show that this approach can be used for multiple languages. No knowledge of German is required though because translations of the short examples sentences are provided.