<t>Saw someone say room within a room.. yes do this. If you cannot isolate it mechanically from the outer shell then go heavy build brick inner wall and fill cavity with sandSound reduction is proportional to mass... Then if its a regular box shape internally either build yiourself some quadratic re...
<t>yes you dofor OTC instruments (IR swaps, FX, CDS) VM is really collateralised mark to market margin and goes both ways. When you receive a mark to market margin payment you have "use" of that collateral and have to pay interest (for USD it's usually Fed funds). Conversely if you have to pay mark ...
<t>I've had success using Nelder-Mead (unconstrainted and unbounded variables optimizer) along with variable transformation to getthe optimizer variables within required bounds. Other constraints added by using the penalty function approach.. all wrapped up using ExcelDNA (as has laready been sugges...
S9 is still the most liquid series for iTraxx tranches. Complete lack of customer flow means street just trading out of that series (as the other poster pointed out)
You know that CDSW uses the ISDA model (by default now) .. well you can get the C source from www.cdsmodel.com.. it has an Excel addin (XLL) so its trivial to use in Excel formulae directly or in VBA via Application.RunCheers- Mark
<t>Hi - long time since I posted, but here goes...I have an optimization problem, with a linear objective but with either-or constraints of the form(f(x) = 0 and g(x) = M)or(g(x) = 0 and (f(x) = 0 or f(x) = Q))I know how to model simpler either-or constraints in LP using binary auxilliary variables ...
<r>QuoteOriginally posted by: d32I'm trying to value a portfolio of CDX's, most of which are off-the-run (currently the on the runs are S13's). For many off-the-run CDX's Markit do not provide a quote. I have also tried CMA but I'm not sure if their quotes are reliable as they can be based on histor...
<t>50% is just a payment "now".. if there is no inbuilt running fixed spread (upfronts usually go along with +500 running) then for a par trade this upfront is equal to the PV on the default leg...(dont know whether that helps) but0 = pv = upfront + running spread in bp / 10000 * dv01 - pv of defaul...