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CS-423: Distributed information systems

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Lectures in this course (143)

Modularity: Community Detection Algorithms Log in to Mediaspace to watch this video

Explores the Louvain Modularity Algorithm for optimizing community quality through modularity and its applications in social network analysis.

Girvan-Newman Algorithm Log in to Mediaspace to watch this video

Introduces the Girvan-Newman Algorithm for network decomposition based on edge betweenness and demonstrates its application in physics collaborations.

Knowledge Modeling: Introduction Log in to Mediaspace to watch this video

Introduces knowledge modeling, focusing on explicitly stating and manipulating knowledge.

Semi-Structured Data Log in to Mediaspace to watch this video

Explores semi-structured data, embedding schema information to explain data values and relationships, discussing XML, schema-less data benefits, and serialization.

Semantic Web: Overview and Tools Log in to Mediaspace to watch this video

Explores the Semantic Web, ontologies, schema mapping, RDF, and knowledge graphs.

Introduction to Information Retrieval Log in to Mediaspace to watch this video

Introduces the basics of information retrieval, covering text-based retrieval, document features, similarity functions, and the difference between Boolean and ranked retrieval.

Social Network Analysis: Modularity Measure Log in to Mediaspace to watch this video

Explores the computation of the modularity measure and betweenness centrality in graphs for community detection.

RDF: Syntax and Schema Log in to Mediaspace to watch this video

Explores RDF syntax, schema properties, and classification of resources in the Semantic Web.

Semantic Web Resources Log in to Mediaspace to watch this video

Explores popular ontologies and knowledge bases like WordNet, WikiData, Google Knowledge Graph, and Schema.org, as well as Linked Open Data sets.

Knowledge Modeling: Introduction Log in to Mediaspace to watch this video

Explores manual creation of knowledge bases and challenges in knowledge extraction from text.

Keyphrase Extraction Log in to Mediaspace to watch this video

Covers keyphrase extraction, a method to extract important phrases from text for document summarization, indexing, and search.

Named Entity Recognition: Applications and Techniques Log in to Mediaspace to watch this video

Explores Named Entity Recognition, its uses, techniques, and applications in information extraction.

Information Extraction: Approaches and Techniques Log in to Mediaspace to watch this video

Covers Information Extraction approaches, including hand-written patterns and supervised learning.

Semantic Web: Exercise Solutions Log in to Mediaspace to watch this video

Explains exercise solutions on the semantic web using dictionaries and inference rules.

Information Extraction: Bootstrapping Log in to Mediaspace to watch this video

Explores Information Extraction approaches like hand-written patterns and distant supervision, with examples of entity pairs matching patterns.

Matrix Factorization: Linking Text to Knowledge Bases Log in to Mediaspace to watch this video

Explores distant supervision for linking text to knowledge bases using entity extraction and classifiers.

Text-Based Information Retrieval Log in to Mediaspace to watch this video

Covers the basic concepts of text-based information retrieval and how documents are indexed and retrieved based on user queries.

Matrix Factorization: Information Extraction Log in to Mediaspace to watch this video

Explores matrix factorization for information extraction, Bayesian ranking, and relation embeddings.

Taxonomy Induction: Learning Hierarchical Structures Log in to Mediaspace to watch this video

Explores taxonomy induction, learning terms and relationships to construct hierarchical structures.

Entity Disambiguation Log in to Mediaspace to watch this video

Explores Entity Disambiguation, linking text mentions to a knowledge base, coherence in entity graphs, and Personalized PageRank.

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