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Hello, I'm interested in correcting for and measuring unobserved heterogeneity ("missing variables") using R. In particular, I'm searching for a simple way to measure the amount of unobserved heterogeneity remaining in a series of increasingly complex models (adding additional variables to each new model) on the same data. I have a static database of 400,000 or

Lloyd Segal Real Estate News 15-year mortgage rate hits record low Mortgage rates dropped again this week, with the 15-year fixed-rate loan hitting a record low, according to a report from mortgage financier Freddie Mac. The 15-year fixed rate fell to 2.56% from 2.61%. A year ago, it stood at 3.07. The most popular mortgage, the 30-year fixed rate, came in at 3.35%, a drop of 0.05 percentage

Hi, I am working on fitting a proportional hazard model to predict the probability of default for mortgage loans. I have a question regarding survfit function. My historical data set is a pool of loans with monthly observed default status for the next 24 months. The data is left truncated (delayed entry to observation window after the loan is opened) and right censored. I would like to

I use R / RStudio at work. Recently, I tried to download XLConnect package using install.packages("XLConnect") However, I got the following error message: Installing package(s) into 'WORKCOMPUTER SPECIFIC STUFF HERE Documents/R/win-library/2.15' (as 'lib' is unspecified) trying URL 'http://www.stats.bris.ac.uk/R/bin/windows/contrib/2.15/XLConnect_0.2-5.zip'

Hi, I noticed that the sound directory is missing from asterisk-1.4.0-beta4.tar.gz. This directory (7 M) witch existed in asterisk-1.4.0-beta3.tar.gz has GSM Core Sounds and some MOH. Does anyone know why it has been removed from the latest beta? Regards. ____________________________________________________________________________________ Sponsored Link Mortgage rates near historic

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my models borrower ----- has_many :loans loan ----- belongs_to :borrower my loans _controller def new @borrower = Borrower.find(params[:borrower_id]) logger.debug '' @borrower.id'' logger.debug @borrower.id @loan = Loan.new respond_to do |format| format.html # new.html.erb format.xml { render :xml => @loan } end

Hello, this is my first post. I have a large CSV file where I need to fill in the 1st and 2nd column with a Loan # and Account name that would be found in a line of text : like this: ,,Loan #:,ML-113-07,Account Name:, Quilting Boutique,,,,,,,,,,, I would like to place the Loan #: ML-113-07 in the first column and the account name quilting boutique in the second column. If possible I would also

I don't have much experience with r. What I am trying to do is to turn regression coefficients (after I run a lm or glm model) into some matrix such that I can do some post-estimation calculation, for example predicted probabilities in glm model, etc.. Or, is there any function in r that I can use to do something along that line? thanks. Jun Xu, Ph.D. Department of Sociology Ball State

I don't have much experience with r. What I am trying to do is to turn regression coefficients (after I run a lm or glm model) into some matrix such that I can do some post-estimation calculation, for example predicted probabilities in glm model, etc.. Or, is there any function in r that I can use to do something along that line? thanks. Jun Xu, Ph.D. Department of Sociology Ball State

I have a loans table and a payments table. Each loan has_many payments. So far no problem. Now, the payments table has a payment_number field, and each payment has a payment_number unique within that loan. For example, Loan A can have payment_numbers 0, 1, and 2 and Loan B can have payment_numbers 0, 1, 2, and 3 (but only one of each payment_number). I can enforce this with a unique index in

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Agile Web Development with Rails doesn''t seem to have NULL in the index [or my eyes have failed me again], and web searching turns up lots of SQL statements containing NOT NULL. I have a table of loans, and I want to record when something was loaned and returned. The loan date can''t be null, or there''d be no entry in the table. The return date must be something

I have a very strange problem I'm hoping someone has encountered already. I've scoured the internet for an answer to this one. My phone company provides no disconnect supervision. Hence I'm forced to use the busydetect feature. I have a TDM400 with two FXO ports. If I call from an internal extension to a landline and then hangup the landline Asterisk detects the busy signal

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Andrew Davidson & Co., Inc. (ADCo) is looking for a talented modeler with a strong background in finance, statistics, or econometrics to join its team of financial engineers in the San Francisco Bay Area. The position involves applying the R language to mortgage data in support of ADCo's prepayment and default modeling businesses. In particular, the role would entail estimation