Extracting Text from PostScript

Finding structure in multiple streams of datais an important problem. Consider thestreams of data flowing from a robot’s sen-sors, the monitors in an intensive care unit,or periodic measurements of various indica-tors of the health of the economy. Thereis clearly utility in determining how currentand past values in those streams are relatedto future values. We formulate the prob-lem of finding structure in multiple streamsof categorical data as search over the spaceof dependenceies, unexpectedly frequent orInternal data inparenthesesWord fragments No spaces Figure 2 A PostScript document and the text extracted from it a /show { print } defFindingstructureinmultiplestreamsofdataisanimportantproblem.Considerthestreamsofdata§owingfromarobot'ssensors,themonitorsinanintensivecareunit,orperiodicmeasurementsofvariousindicatorsofthehealthoftheeconomy.Thereisclearlyutilityindetermininghowcurrentandpastvaluesinthosestreamsarerelatedtofuturevalues b /show { print ( ) print } def Finding structure in m ultiple streams of data is an importan t problem. Consider the streams of data §o wingfrom a rob ot's sensors, the monitors in an in tensiv ecare unit, or p erio dic measuremen ts of v ariousindicators of the health of the econom y . There isclearly utilit y in determining ho w curren t and past values in those streams are related to future v alues