This is a staging area for innovation, discussion, and building consensus towards advancing existing knowledge-representation formats and creating new such formats.

Discussion Threads
Evaluating Expression Graphs in RDF Languages Ideas are presented about evaluating expression graphs in RDF languages, including lambda expression graphs.
Set Algebra and Logic in RDF Languages Syntax is explored to provide set-algebraic and logical operations in RDF languages and HTTP techniques involving using the HEAD method to obtain provenance data are discussed for computational optimization.
Dereferencing URLs in RDF Languages Drawing inspiration from pointers in computer-programming languages like C and C++, proposed for RDF languages is that the * symbol could be used to dereference URLs.
Prefixed S-expressions and Related Markup Techniques What if S-expressions could be prefixed with symbols like # and @ to represent attributes and metadata of their parent elements?
Multipart MIME By providing and making use of a metadata part, multipart MIME messages could be used for representing knowledge, argumentation, and other kinds of data intended for interchange between software applications and systems.
Transforming Markup into Semantics with Style Using additive cascade, Web developers could use style selectors to additively attach semantic content to elements and/or documents, effectively transforming markup into semantics with style.
Time-varying Semantics Ideas involving time-varying knowledge graphs and datasets are explored.
XHTML Custom Elements Brainstorming about Web Components and custom elements, while HTML custom elements presently require hyphens in their tag names, perhaps XHTML custom elements could make use of XML namespaces.