Can anyone help clarify my question?
In the CallableBonds Class, does the member function "cleanPriceFromZSpread(...)" calculate a clean price by discounting the *unadjusted* cash flows, OR *adjusted* cash flows(prices on each note revised to strike if option in the money), by interest tree note rates plus z-spread? I got confused because the terminology z-spread(zero volatility spread) is used in non-option setting but if this function simply just discounts all unadjusted cashflows then it is not special to this callable bond class anymore. If it does discount adjusted cashflows, then shouldn't the spread called OAS instead of z-spread? Appreciate your correction on my misunderstanding, Xinc |
On Tue, 2009-02-24 at 13:49 -0800, gigifaye29 wrote:
> In the CallableBonds Class, does the member function > "cleanPriceFromZSpread(...)" calculate a clean price by discounting the > *unadjusted* cash flows, OR *adjusted* cash flows(prices on each note > revised to strike if option in the money), by interest tree note rates plus > z-spread? Unadjusted. The method is inherited from the generic Bond class and does not take callability into account. Luigi -- Testing can never demonstrate the absence of errors in software, only their presence. -- W.E. Dijkstra ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
Thanks. Just one more question on this topic
For parameters to feed the pricing engines, volatility and reversion in particular, are the functions taking *annualized* numbers? Thx again, Xinc
|
In reply to this post by Luigi Ballabio
Is the .npv() function in callablebond class inherited from the generic bond class, or it is overridden in the callablebond?
If it is latter than I should expect it is the npv of adjusted cash flows. Seems to me the npv calculation is sensitive the tree volatility assumption, but when I try a bond that will be called on the evaluation date the npv is not capped to the strike price. Appreciate if you can also shed some light on this, Xinc
|
In reply to this post by gigifaye29
On Fri, 2009-02-27 at 07:58 -0800, gigifaye29 wrote:
> Thanks. Just one more question on this topic > > For parameters to feed the pricing engines, volatility and reversion in > particular, are the functions taking *annualized* numbers? Yes. Luigi -- Don't let school get in the way of your education. -- Mark Twain ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by gigifaye29
On Fri, 2009-02-27 at 14:54 -0800, gigifaye29 wrote:
> Is the .npv() function in callablebond class inherited from the generic bond > class, or it is overridden in the callablebond? Technically, it's not; but NPV() delegates the calculation to the pricing engine, so callable bonds are priced correctly if you set the correct engine. > Seems to me the npv calculation is sensitive the tree volatility assumption, > but when I try a bond that will be called on the evaluation date the npv is > not capped to the strike price. If the call date equals the evaluation date, the engine might consider it as expired. What happens if you try a bond that will be called one day after the evaluation date? Luigi -- The box said "Use Windows 95 or better," so I got a Macintosh. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by gigifaye29
If the call date equals the evaluation date, the engine might consider it as expired. What happens if you try a bond that will be called one day after the evaluation date?
Luigi ***** Thanks Luigi. Isn't that though, if the engine( I am using Hull-White) considers it as expired, the price should be very close to strike? Yes I tried using the evaluation date just before the next call date, the calculated price still not capped to strike as I would expect. Am I missing anything here? Thx, Xinc *****
|
Conceptually, Z-Spread is calculated from one interest rate scenario, for example zero curve. Why Hull-White model is used? Look at the implementation, the dirtyPriceFromZSpreadFunction() only use the cashflow (coupons) and discount with the spreadedCurve as the discount curve. There is no option involved at all. I have been thinking of how to implement a member function to calculate the OAS (option adjusted spread) and price from OAS. In fact, such a function will be much useful than Yield practically and Z-Spread should be only its simple case. However, with currently design, for each iteration for OAS finding, a new curve has to be initialized and is not efficient. It would be much easier and efficient if the rollback function can accept a spread parameter. I may be wrong about it. Thanks,
If the call date equals the evaluation date, the engine might consider it as expired. What happens if you try a bond that will be called one day after the evaluation date? Luigi ***** Thanks Luigi. Isn't that though, if the engine( I am using Hull-White) considers it as expired, the price should be very close to strike? Yes I tried using the evaluation date just before the next call date, the calculated price still not capped to strike as I would expect. Am I missing anything here? Thx, Xinc ***** gigifaye29 wrote: > > Can anyone help clarify my question? > > In the CallableBonds Class, does the member function > "cleanPriceFromZSpread(...)" calculate a clean price by discounting the > *unadjusted* cash flows, OR *adjusted* cash flows(prices on each note > revised to strike if option in the money), by interest tree note rates > plus z-spread? > > I got confused because the terminology z-spread(zero volatility spread) is > used in non-option setting but if this function simply just discounts all > unadjusted cashflows then it is not special to this callable bond class > anymore. > > If it does discount adjusted cashflows, then shouldn't the spread called > OAS instead of z-spread? > > Appreciate your correction on my misunderstanding, > Xinc > -- View this message in context: http://www.nabble.com/QuantLib%3A%3ABond%3A%3AcleanPriceFromZSpread-tp22183771p22291035.html Sent from the quantlib-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users ________________________________________________________ DTCC DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify us immediately and delete the email and any attachments from your system. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
I think you are right on the z-spread calculation - no option pricing engine involved, as Luigi 's previous, it was inherited from generic bond class. I used HW is because I feed the pricing engine for the .npv() calculation which adjusts optionality.
I too need to calculate OAS. I think OAS calculation by Quantlib is on their to-do list. One thing I still haven't figured out is that, .npv() gives me a value beyond strike(not capped) in the situation that the option is in money.... Xinc
|
In reply to this post by Guowen Han
On Tue, Mar 3, 2009 at 7:36 PM, Guowen Han <[hidden email]> wrote:
> It would be > much easier and efficient if the rollback function can accept a spread > parameter. what do you mean by rollback function? ciao -- Nando ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
The rollback function is essentially discounting the cashflow using the underling term structure, right? If we can apply the discount with spread, the current value will be spread adjusted. Thanks,
On Tue, Mar 3, 2009 at 7:36 PM, Guowen Han <[hidden email]> wrote: > It would be > much easier and efficient if the rollback function can accept a spread > parameter. what do you mean by rollback function? ciao -- Nando ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users ________________________________________________________ DTCC DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify us immediately and delete the email and any attachments from your system. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by gigifaye29
I don't think there is such a thing implemented in QuantLib. This may be also a good candidate for the ToDo list. Thanks,
right, I understand that. I suppose .npv() gives us a present value by discounting the *adjusted* cash flows with treausre term structure plus OAS. But if my evaluation day is on the same day as the callable day, the .npv() result should be capped to the strike price, isn't it? Or as you mentioned, there was something I have missed to specify the callable notification so the pricing engine takes that into account....? From: Guowen Han [mailto:[hidden email]] Sent: Wednesday, March 04, 2009 10:15 AM To: Ferdinando Ametrano Cc: [hidden email]; Chen, Xin Subject: Re: [Quantlib-users] QuantLib::Bond::cleanPriceFromZSpread The rollback function is essentially discounting the cashflow using the underling term structure, right? If we can apply the discount with spread, the current value will be spread adjusted. Thanks,
On Tue, Mar 3, 2009 at 7:36 PM, Guowen Han <[hidden email]> wrote: > It would be > much easier and efficient if the rollback function can accept a spread > parameter. what do you mean by rollback function? ciao -- Nando ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users ________________________________________________________ DTCC DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify us immediately and delete the email and any attachments from your system. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. ********************* NOTICE OF CONFIDENTIALITY This communication including any information transmitted with it is intended only for the use of the addressees and is confidential. If you are not an intended recipient or responsible for delivering the message to an intended recipient, any review, disclosure, conversion to hard copy, dissemination, reproduction or other use of any part of this communication is strictly prohibited, as is the taking or omitting of any action in reliance upon this communication. If you receive this communication in error or without authorization please notify us immediately by return e-mail or otherwise and permanently delete the entire communication from any computer, disk drive, or other storage medium. If the above disclaimer is not properly readable, it can be found at www.td.com/legal AVERTISSEMENT DE CONFIDENTIALITE Ce courriel, ainsi que tout renseignement ci-inclus, destiné uniquement aux destinataires susmentionnés, est confidentiel. Si vous n'êtes pas le destinataire prévu ou un agent responsable de la livraison de ce courriel, tout examen, divulgation, copie, impression, reproduction, distribution, ou autre utilisation d'une partie de ce courriel est strictement interdit de même que toute intervention ou abstraction à cet égard. Si vous avez reçu ce message par erreur ou sans autorisation, veuillez en aviser immédiatement l'expéditeur par retour de courriel ou par un autre moyen et supprimer immédiatement cette communication entière de tout système électronique. Si l'avis de non-responsabilité ci-dessus n'est pas lisible, vous pouvez le consulter à www.td.com/francais/legale ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by gigifaye29
On Tue, 2009-03-03 at 11:05 -0800, gigifaye29 wrote:
> [ about callable bonds ]One thing I still haven't figured out is > that, .npv() gives me a value beyond strike(not capped) in the > situation that the option is in money.... Does the bond have other call dates after this one? And when you say that the option is in the money, do you mean that the strike is greater than the price of the underlying bond with or without the other call dates? It might be that the option is in the money, but the pricer is calculating that holding the option will give a better payoff on one of the future call dates. Luigi -- There is no such thing as public opinion. There is only published opinion. -- Winston Churchill ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by Guowen Han
On Tue, 2009-03-03 at 13:36 -0500, Guowen Han wrote:
> with currently design, for each iteration for OAS finding, a new > curve has to be initialized and is not efficient. That's true for the current implementation, but that's not necessary. Now the function creates a new spread quote and a new spreaded curve at each iteration, but it wouldn't be hard to change it so that it creates the quote and the spreaded curve just once and it just changes the quote value at each iteration. Luigi -- If I do not want others to quote me, I do not speak. -- Phil Wayne ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
Well, I tend to agree with your comment. But that will break original design, and maintain the quote won't be a simple task.
Guowen > From: [hidden email] > To: [hidden email] > Date: Thu, 5 Mar 2009 11:08:25 +0100 > CC: [hidden email]; [hidden email] > Subject: Re: [Quantlib-users] QuantLib::Bond::cleanPriceFromZSpread > > On Tue, 2009-03-03 at 13:36 -0500, Guowen Han wrote: > > with currently design, for each iteration for OAS finding, a new > > curve has to be initialized and is not efficient. > > That's true for the current implementation, but that's not necessary. > Now the function creates a new spread quote and a new spreaded curve at > each iteration, but it wouldn't be hard to change it so that it creates > the quote and the spreaded curve just once and it just changes the quote > value at each iteration. > > Luigi > > > -- > > If I do not want others to quote me, I do not speak. > -- Phil Wayne > > > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > QuantLib-users mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/quantlib-users Hotmail® is up to 70% faster. Now good news travels really fast. Find out more. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by Luigi Ballabio
Luigi, If no other costs are considered, it should be optimal for the bond issuer to exercise the call option whenever it becomes in the money except for negative interest rate. Thanks, Guowen > From: [hidden email] > To: [hidden email] > Date: Thu, 5 Mar 2009 11:04:20 +0100 > CC: [hidden email] > Subject: Re: [Quantlib-users] QuantLib::Bond::cleanPriceFromZSpread > > On Tue, 2009-03-03 at 11:05 -0800, gigifaye29 wrote: > > [ about callable bonds ]One thing I still haven't figured out is > > that, .npv() gives me a value beyond strike(not capped) in the > > situation that the option is in money.... > > Does the bond have other call dates after this one? And when you say > that the option is in the money, do you mean that the strike is greater > than the price of the underlying bond with or without the other call > dates? It might be that the option is in the money, but the pricer is > calculating that holding the option will give a better payoff on one of > the future call dates. > > Luigi > > > -- > > There is no such thing as public opinion. There is only published > opinion. > -- Winston Churchill > > > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > QuantLib-users mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/quantlib-users Express your personality in color! Preview and select themes for Hotmail®. See how. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
On Thu, 2009-03-05 at 22:22 -0500, Guowen Han wrote:
> If no other costs are considered, it should be optimal for the bond > issuer to exercise the call option whenever it becomes in the money > except for negative interest rate. Ok. I guess we'll need some example code to see what's wrong, then... Luigi -- Use every man after his desert, and who shall scape whipping? -- Hamlet, Act II, scene II ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
In reply to this post by Guowen Han-3
On Thu, 2009-03-05 at 22:09 -0500, Guowen Han wrote:
> Well, I tend to agree with your comment. But that will break original > design Not the design, it's just implementation (it's a helper function in an anonymous namespace.) > and maintain the quote won't be a simple task. instead of the current Real dirtyPriceFromZSpreadFunction(..., Spread zSpread, ...) { - create the quote - create the spreaded curve - discount the coupons - return the price } you'll have: class dirtyPriceFromZSpreadFunction { shared_ptr<SimpleQuote> quote_; ... public: dirtyPriceFromZSpreadFunction(... arguments except spread ...) { - create the quote - create the spreaded curve } Real operator()(Spread zSpread) { quote_->setValue(zSpread); - discount the coupons (or better yet, call CashFlows::npv) - return the price } }; Luigi -- feature, n: A surprising property of a program. Occasionally documented. To call a property a feature sometimes means the author did not consider that case, and the program makes an unexpected, though not necessarily wrong response. See BUG. "That's not a bug, it's a feature!" A bug can be changed to a feature by documenting it. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
We are right on the dirtyPriceFromZSpreadFunction(). We are actually talking about different issue. I was talking about the OAS finding. Do you have any idea how should it be done efficiently? Thanks, Guowen > Subject: RE: [Quantlib-users] QuantLib::Bond::cleanPriceFromZSpread > From: [hidden email] > To: [hidden email] > CC: [hidden email] > Date: Fri, 6 Mar 2009 13:11:40 +0100 > > On Thu, 2009-03-05 at 22:09 -0500, Guowen Han wrote: > > Well, I tend to agree with your comment. But that will break original > > design > > Not the design, it's just implementation (it's a helper function in an > anonymous namespace.) > > > and maintain the quote won't be a simple task. > > instead of the current > > Real dirtyPriceFromZSpreadFunction(..., Spread zSpread, ...) { > - create the quote > - create the spreaded curve > - discount the coupons > - return the price > } > > you'll have: > > class dirtyPriceFromZSpreadFunction { > shared_ptr<SimpleQuote> quote_; > ... > public: > dirtyPriceFromZSpreadFunction(... arguments except spread ...) { > - create the quote > - create the spreaded curve > } > Real operator()(Spread zSpread) { > quote_->setValue(zSpread); > - discount the coupons (or better yet, call CashFlows::npv) > - return the price > } > }; > > > Luigi > > > -- > > feature, n: > A surprising property of a program. Occasionally documented. > To call a property a feature sometimes means the author did not > consider that case, and the program makes an unexpected, though > not necessarily wrong response. See BUG. "That's not a bug, > it's a feature!" A bug can be changed to a feature by > documenting it. > > Windows Live™ Contacts: Organize your contact list. Check it out. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
On Sat, 2009-03-07 at 08:14 -0500, Guowen Han wrote:
> > We are right on the dirtyPriceFromZSpreadFunction(). > We are actually talking about different issue. I was talking about the > OAS finding. > Do you have any idea how should it be done efficiently? Right now, I'm not even sure that I know how to do it inefficiently :) I think I wouldn't care that much about efficiency the first round of coding, though. Are you willing to work on this, by the way? Luigi -- The First Rule of Optimization: Don't do it. The Second Rule of Optimization (For experts only): Don't do it yet. -- Michael Jackson ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ QuantLib-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/quantlib-users |
Free forum by Nabble | Edit this page |