Tags / 11 quotes from 7 sources
#nodes
About Taxonomies & Controlled Vocabularies
Taxonomies, polyhierarchies and facets
A taxonomy is typically a controlled vocabulary with a hierarchical structure, with the understanding that there are different definitions of a hierarchy. Terms within a taxonomy have relations to other terms within the taxonomy. These are typically: parent/broader term…
Citation Indexes In Sociological And Historical Research
Quantitative measure of scientific impact
One can also program the computer to “erase” one or more nodes and its connections in the network. By making the assumption that any papers which derive from these nodes should also be erased, one can then determine whether an alternate “critical path” to a subsequent discovery…
Demystifying Networks
Multimodal networks
A network with two types of nodes is called 2-mode, bimodal, or bipartite. We can add more, making it multimodal. Publishers, topics, you-name-it. We can even add seemingly unrelated node-types, like academic conferences, or colors of the rainbow. The list goes on. We would…
Centrality doesn't mean the same in every network
The newcomer to network analysis loads the author-publisher network into Gephi, finds the centrality of every node, and then makes the nodes bigger that have the highest centrality. The issue here is that, although the network loads into Gephi perfectly fine, and although the…
Problems with reductionism in the humanities
This reduction of data comes at a price, one that some argue traditionally divided the humanities and social sciences. If humanists care more about the differences than the regularities, more about what makes an object unique rather than what makes it similar, that is the very…
From Encyclopedia To Ontology: Toward Dynamic Representation Of The Discipline Of Philosophy
Computational ontologies and knowledge bases
We take a computational ontology to be a directed acyclic graph where nodes represent concepts and the links between concepts represent the taxonomic “isa” relation (e.g. in the graph where ‘Wine → Red Wine → Brunello di Montalcino, everything that “is a” instance of Brunello…
Harnessing The Power Of Data Discovery: Pt. 2 | Yarcdata
Graph database vs relational database
The marketing manager is hypothesis-testing: she might use this data for a while and then realize that adding geographic information would be useful too since a marathon is going to take place in this town. This way, she can figure out which folks and their friends who live in…
Mapreduce - Wikipedia, The Free Encyclopedia
The map and reduce steps
MapReduce is a framework for processing highly distributable problems across huge datasets using a large number of computers (nodes), collectively referred to as a cluster (if all nodes use the same hardware) or a grid (if the nodes use different hardware). Computational…
Rdf Primer
Blank node identifiers
Since a complex graph might contain more than one blank node, there also needs to be a way to differentiate between these different blank nodes in a triples representation of the graph. As a result, triples use blank node identifiers, having the form _:name, to indicate the…
Writing an RDF graph in RDF/XML
Although additional abbreviated forms for writing RDF/XML are available, the facilities illustrated so far provide a simple but general way to express graphs in RDF/XML. Using these facilities, an RDF graph is written in RDF/XML as follows: - All blank nodes are assigned blank…
The typed node abbreviation in RDF/XML
It is fairly common in RDF for resources to have rdf:type properties that describe the resources as instances of specific types or classes. Such resources are called typed nodes in the graph, or typed node elements in the RDF/XML. RDF/XML provides a special abbreviation for…