HLTC16H3 Chapter Notes - Chapter 2: Information Retrieval, Knowledge Representation And Reasoning, Formal Methods
9 Dec 2016
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Information: meaningful data or facts from which conclusions can be drawn. Knowledge: information that is justifiable believed to be true. They input, store, process and output: zero: is a bit, a series of 8 bits is a byte, there is no intrinsic meaning. Integers: floating point number (decimals, characters (alphabet) Data can be aggregated into different file formats. Data is the domain of information technology professionals and computer scientists. Information retrieval is finding material of unstructured natures (text) Conceptual model: has only parts of the physical world that are relevant to the computation, everything that is not in the conceptual model is excluded from the computation and is assumed to be irrelevant. The conceptual model is used to design and implement a computational model. Representation: represented world: information that one wants to represent, representing world: has data that that represent the information, mapping: there must be mapping between the represented and representing world.
