The DSCR is a commonly used metric when negotiating loan contracts between companies and banks. A business applying for a line of credit might be obligated to ensure that its DSCR doesn't dip below 1.25. The borrower could be found to have defaulted on the loan if it does. DSCRs can als...
You can use a small built-in sample dataset to complete the walkthrough, and then step through tasks again using a larger dataset.Download sample data Start Revo64 Create a compute context for Spark Copy a data set into HDFS Create a data source Summarize your data Fit a linear model to ...
rxSetComputeContext("local") inputFile <-file.path(bigDataDirRoot,"AirlineDemoSmall/AirlineDemoSmall.csv") airDSLocal <- RxTextData(file = inputFile, missingValueString = "M", colInfo = colInfo, fileSystem = hdfsFS) adsSummary <- rxSummary(~ArrDelay+CRSDepTime+DayOfWeek, data = airD...
I can see that DEPDEL15 and DEPDELAY columns have 49 missing values. There are large values in these columns: AIRTIME, CRSARRTIME, CRSDEPTIME, CRSELAPSEDTIME, DEPDELAY, DEPTIME, TAXIOUT, WHEELSOFF, and YEAR. Since I will create a decision tree model, I don’t need to deal with the ...
Why reprex? Getting unstuck is hard. Your first step here is usually to create a reprex, or reproducible example. The goal of a reprex is to package your code, and information about your problem so that others can run it…
This credit will be applied to any valid services used during your first 60 days. Sign Up What is a LAMP Stack? LAMP is a very common example of a web service stack, named as an acronym of the names of its original four open-source components: the Linux operating system, the Apache ...
The results are the same as doing the computations across the nodes with the RxSpark compute context: Call: rxSummary(formula = ~ArrDelay + CRSDepTime + DayOfWeek, data = airDS) Summary Statistics Results for: ~ArrDelay + CRSDepTime + DayOfWeek Data: airDS (RxTextData Data Source) File...
DEA models compute the efficiency score for a given DMU, compared with the rest of the DMUs of the set. To do this, DEA considers inputs and outputs. The relative efficiency of a DMU is calculated as the ratio between the weighted sum of outputs to the weighted sum of inputs. ...
Instead, it utilizes the factors of evaluation, i.e., inputs (resources) and outputs (results generated), using linear programming methods to compute the production possibility frontier. The efficiency of each unit under evaluation is measured so as to reflect the unit’s efficiency relative to ...
dsSqlTo <- RxSqlServerData(table = "cleanData", connectionString = sqlConnTo) xFunc <- function(data) { data$CRSDepHour <- as.integer(trunc(data$CRSDepTime)) return(data) } xVars <- c("CRSDepTime") sqlCompute <- RxInSqlServer(numTasks = 4, conne...