?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F106%2F&rft.title=Aggregation+of+stochastic+models&rft.creator=Hjorth%2C+Poul&rft.subject=Aerospace+and+defence&rft.description=Dstl+examines+battle+simulations+based+on+stochastic+evolution+codes.+One+such+code%2C+known+as+SIMBAT+(SIMple+BATtle+program)+models+the+evolution+of+the+battle+as+a+sequence+of+turns+in+which+the+two+sets+of+combating+units+move+in+a+landscape.+The+units+have+objectives+and+act+accordingly%2C+they+can+acquire+enemy+units+if+lines-of-sight+in+the+landscape+permit+this%2C+and+they+can+fire+upon+and+disable+enemy+units+with+a+certain+probability.+Based+on+the+setting+of+a+large+number+of+parameters%2C+and+also+on+the+outcome+of+pseudo-random+decisions+and+engagements+made+in+the+course+of+the+action%2C+a+final+outcome+of+the+battle+is+achieved.+Figure+1+shows+a+SIMBAT+screenshot.%0A%0A%0AFigure+1%3A+Screenshot+from+a+SIMBAT+battle.+The+setting+is+that+of+a+%E2%80%98standard%E2%80%99+battle+(see+full+report).%0A%0AThe+problem+posed+to+the+Study+Group+is+the+following%3A+Is+it+possible+to+analyse+and+subsequently+calculate+a+battle+in+terms+of+smaller+subunits+which+can+then+be+aggregated+into+the+whole+in+a+systematic+fashion%3F+This+could+potentially+speed+up+the+processing+of+a+large+number+of+simulations.&rft.date=2007-04-17&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F106%2F1%2FDstl-AggregationReport.pdf&rft.identifier=++Hjorth%2C+Poul++(2007)+Aggregation+of+stochastic+models.++%5BStudy+Group+Report%5D+++++