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seize the power
seize the power

Hot Topics: Information Retrieval for Network Security
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... Figure 1: (a) Hot topics–the topics of the firewall log over time. (b) The firewall “vocabulary” with nodes highlighted according to a particular topic. The next step in the analysis pipeline is to use topic modeling as a form of dimension reduction. The goal of topic modeling is to summarize each d ...
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< 1 ... 3 4 5 6 7 8 9 10 11 ... 16 >

Waveform graphics



Waveform graphics was a simple vector graphics system introduced by Digital Equipment Corporation (DEC) on the VT55 and VT105 terminals in the mid-1970s. It was used to produce graphics output from mainframes and minicomputers.The system was designed to use as little computer memory as possible. At any given X location it could draw two dots at given Y locations, making it suitable for producing two superimposed waveforms, line charts or histograms. Text and graphics could be mixed, and there were additional tools for drawing axes and markers. DEC used the term ""waveform graphics"" to refer specifically to the hardware, but it was used more generally to describe the whole system.The waveform graphics system was used only for a short period of time before it was replaced by the more sophisticated ReGIS system, first introduced on the VT125 in 1981. ReGIS allowed the construction of arbitrary vectors and other shapes. Whereas DEC normally provided a backward compatible solution in newer terminal models, they did not choose to do this when ReGIS was introduced, and waveform graphics disappeared from later terminals.
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