DAML


	One can view these technology layers symbolically as shown on this slide.
	The vertical axis represents semantic content, or the degree to which data can be abstracted to represent information centered around specific arguments being postulated. The horizontal axis represents the continuum of the data space which provides the necessary evidence to support or refute specific argument constructs..
	Data is gathered from events occurring in the real world as measured by sensors (to include humans) and as available in various open source including the World Wide Web and classified databases. These data contain inherent semantic value that is largely derived from the language which is used to describe them. I have termed this the “index space”. You might think of “key words” as one form of “index” derived from an understanding of the meaning of symbols used in the English language as represented in a word document . At a higher level of abstraction, you might define the “index space” using “concepts”. I’ve represented one document as the large white bar in the information space and shown it’s key words linked into the index space.
	Above the Index Space are evidence models which are derived from intent models and argument models for the hypothesis under consideration that enable the association of (“index”) evidence to arguments being postulated. These models help both to drive the search for supporting evidence, and provide the metric for scoring the value of new evidence found. A document that has high semantic content has more keywords that are included in the index space than one with lower semantic content and thus is easier to find during search. In general, documents with low semantic content require more knowledge and tailoring of search terms in order to guarantee successful retrieval ( template match).
	The index space provides the basic evidence layer that can be mapped onto projections of the arguments through the use of intent models or other such constructs. These evidence data then are the basis for supporting or refuting arguments postulated and being reasoned.
	I will now delve deeper into the technologies of each layer.