I think not considering the zero cells compromises the estimates you derive from you analysis. For instance, what will be the value of N used in the MLE estimation?
You can ZIP - Zero Inflated Poisson which should provide you with the means to account for the zeros. R has funstions to do that. Form the top of my head, I can remember "zicount". Ciao! A Smile costs Nothing     But Rewards Everything Happiness is not perfected until it is shared                                                              -Jane Porter  --- On Wed, 6/25/08, Peng Jiang <[EMAIL PROTECTED]> wrote: From: Peng Jiang <[EMAIL PROTECTED]> Subject: Re: [R] How to solve empty cells in the contingency table? To: "ç¨ç" <[EMAIL PROTECTED]> Cc: r-help@r-project.org Date: Wednesday, June 25, 2008, 3:35 AM Hi , yan I don't think that is a R specific problem. Treating missing value is not that trivial, it depends too much on your raw data and your essential problem. regards. On 2008-6-25, at ä¸å2:14, ç¨ç wrote: > > Hi,Dear all R experts, > > I am trying to do the 2-way contingency table analysis by fitting > the loglinear models. However, I found my table has several empty > cells which are theoretically missing values.I have no idea of how > to solve them coz we cannot compute the simulated p-value with zero > marginals.Does someone have some suggestions? Please help me out, > thanks a lot! > > Cheers, > Yan > _________________________________________________________________ > ÃÃÃê»»ÃÃÃ㬿ìôñ > °çÃüºµÃMSN¸øÃÃÃõÃTAû¸ö¾ªÃ²£¡ > http://im.live.cn/emoticons/?ID=18 > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -------------------------- Peng Jiang æ±é¹ Ph.D. Candidate Antai College of Economics & Management å®æ³°ç»æµç®¡çå¦é¢ Department of Mathematics æ°å¦ç³» Shanghai Jiaotong University (Minhang Campus) 800 Dongchuan Road 200240 Shanghai P. R. China ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
