Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Graham Smith
Ben Perhaps you can specify your question more precisely, or differently. The way I interpret it, if there are no interactions in price (e.g. you get a discount for buying more than one book at a time) or in value (e.g. you learn more from one book having read another), then you get the

Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Dennis Murphy
Hi: Are you perhaps thinking of conjoint analysis? Dennis On Wed, Jan 5, 2011 at 1:30 AM, Graham Smith myotis...@gmail.com wrote: Ben Perhaps you can specify your question more precisely, or differently. The way I interpret it, if there are no interactions in price (e.g. you get a

Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Graham Smith
David, I think a similar argument at the margins would show that even if the task were specified as maximal value with a budget, simply ordering by the value/price and buying until the cumsum of the price was greater than budget would solve the alternate statement of the problem. I suppose

Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Graham Smith
Denis, Are you perhaps thinking of conjoint analysis? Thanks, but as far as I can make out, having just looked at conjoint analysis, it looks like some form of discriminant analysis, which is not what I am looking for. I only have two variables cost and value. I am ignoring how you

Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Liviu Andronic
On Wed, Jan 5, 2011 at 12:29 PM, Graham Smith myotis...@gmail.com wrote: maximal choices would break the budget. This sounds like a homework problem and I don't see any student effort yet. Search terms include: decision analysis , cost-benefit analysis, or utility theory. Hopefully,  my

Re: [R] Cost-benefit/value for money analysis

2011-01-05 Thread Graham Smith
Liviu Try this: require(sos) findFn('cost benefit') found 12 matches Thanks, I wasn't aware of sos, however, following up the hits hasn't moved me any further forward, except to demonstrate that such a function I want doesn't exist. But I will try some other search options. Graham

[R] Cost-benefit/value for money analysis

2011-01-04 Thread Graham Smith
I assume this has a proper name, but I don't know what it is and wondered if anyone knew of a package that might do the following, or something similar. As an example, assume I have borrowed and read 10 books on R , and I have subjectively given each of them a value score in terms of how useful

Re: [R] Cost-benefit/value for money analysis

2011-01-04 Thread Ben Bolker
Graham Smith myotistwo at gmail.com writes: I assume this has a proper name, but I don't know what it is and wondered if anyone knew of a package that might do the following, or something similar. As an example, assume I have borrowed and read 10 books on R , and I have subjectively

Re: [R] Cost-benefit/value for money analysis

2011-01-04 Thread David Winsemius
On Jan 4, 2011, at 9:03 PM, Ben Bolker wrote: Graham Smith myotistwo at gmail.com writes: I assume this has a proper name, but I don't know what it is and wondered if anyone knew of a package that might do the following, or something similar. As an example, assume I have borrowed and