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BTYD (version 2.4)

Implementing Buy 'Til You Die Models

Description

This package contains functions for data preparation, parameter estimation, scoring, and plotting for the BG/BB, BG/NBD and Pareto/NBD models.

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Version

Install

install.packages('BTYD')

Monthly Downloads

484

Version

2.4

License

GPL-3

Maintainer

Daniel McCarthy

Last Published

November 7th, 2014

Functions in BTYD (2.4)

bgbb.PlotFreqVsConditionalExpectedFrequency

BG/BB Plot Frequency vs Conditional Expected Frequency
bgbb.PlotRecVsConditionalExpectedFrequency

BG/BB Plot Recency vs Conditional Expected Frequency
bgbb.pmf

BG/BB Probability Mass Function
bgbb.PlotTransactionRateHeterogeneity

BG/BB Plot Transaction Rate Heterogeneity
bgbb.PlotTrackingInc

BG/BB Tracking Incremental Transactions Plot
bgnbd.PlotFrequencyInCalibration

BG/NBD Plot Frequency in Calibration Period
bgbb.PlotTrackingCum

BG/BB Tracking Cumulative Transactions Plot
dc.MakeRFmatrixSkeleton

Make Recency-Frequency Matrix Skeleton
bgnbd.LL

BG/NBD Log-Likelihood
bgnbd.PAlive

BG/NBD P(Alive)
bgbb.PAlive

BG/BB P(Alive)
dc.RemoveTimeBetween

Remove Time Between
bgbb.DERT

BG/BB Discounted Expected Residual Transactions
dc.PlotLogLikelihoodContour

Plot Log-Likelihood Contour
bgbb.PosteriorMeanDropoutRate

BG/BB Posterior Mean Dropout Rate
dc.CumulativeToIncremental

Cumulative to Incremental
discreteSimElog

Discrete simulated annual event log data
bgnbd.compress.cbs

Compress Customer-by-Sufficient-Statistic Matrix
bgbb.PosteriorMeanLmProductMoment

BG/BB Posterior Mean (l,m)th Product Moment
bgnbd.PlotFreqVsConditionalExpectedFrequency

BG/NBD Plot Frequency vs. Conditional Expected Frequency
bgbb.HeatmapHoldoutExpectedTrans

BG/BB Heatmap of Holdout Period Expected Transactions
bgbb.pmf.General

BG/BB General Probability Mass Function
BTYD-package

Implementing Buy 'Til You Die Models
bgnbd.ExpectedCumulativeTransactions

BG/NBD Expected Cumulative Transactions
dc.PlotLogLikelihoodContours

Plot Log-Likelihood Contour
pnbd.PlotRecVsConditionalExpectedFrequency

Pareto/NBD Plot Actual vs. Conditional Expected Frequency by Recency
bgbb.PlotFrequencyInHoldout

BG/BB Plot Frequency in Holdout
pnbd.DERT

Pareto/NBD Discounted Expected Residual Transactions
bgnbd.EstimateParameters

BG/NBD Parameter Estimation
bgnbd.PlotDropoutRateHeterogeneity

BG/NBD Plot Dropout Probability Heterogeneity
bgbb.EstimateParameters

BG/BB Parameter Estimation
spend.LL

Spend Log-Likelihood
pnbd.EstimateParameters

Pareto/NBD Parameter Estimation
pnbd.pmf.General

Generalized Pareto/NBD Probability Mass Function
bgnbd.Expectation

BG/NBD Expectation
pnbd.PAlive

Pareto/NBD P(Alive)
dc.GetLastPurchasePeriodsFromCBT

Get Last Purchase Periods from Customer-by-Time Matrix
donationsSummary

Discrete donation data summary
dc.MakeRFmatrixHoldout

Make Holdout Period Recency-Frequency Matrix
dc.SplitUpElogForRepeatTrans

Split Up Event Log for Repeat Transactions
pnbd.Plot.DERT

Pareto/NBD Plot Discounted Expected Residual Transactions
pnbd.PlotFrequencyInCalibration

Pareto/NBD Plot Frequency in Calibration Period
spend.EstimateParameters

Spend Parameter Estimation
dc.CreateSpendCBT

Create Spend Customer-by-Time Matrix
pnbd.PlotFreqVsConditionalExpectedFrequency

Pareto/NBD Plot Frequency vs. Conditional Expected Frequency
dc.WriteLine

Write Line
cdnowSummary

CDNOW repeat transaction data summary
bgbb.Expectation

BG/BB Expectation
addLogs

Add Logs
dc.check.model.params

Check model params
pnbd.PlotTrackingInc

Pareto/NBD Tracking Incremental Transactions Comparison
bgnbd.pmf.General

Generalized BG/NBD Probability Mass Function
spend.plot.average.transaction.value

Plot Actual vs. Expected Average Transaction Value
pnbd.pmf

Pareto/NBD Probability Mass Function
bgbb.LL

BG/BB Log-Likelihood
dc.CreateFreqCBT

Create Frequency Customer-by-Time Matrix
bgnbd.ConditionalExpectedTransactions

BG/NBD Conditional Expected Transactions
bgbb.PosteriorMeanTransactionRate

BG/BB Posterior Mean Transaction Rate
dc.MergeTransactionsOnSameDate

Merge Transactions on Same Day
bgbb.PlotDropoutRateHeterogeneity

BG/BB Plot Dropout Rate Heterogeneity
spend.marginal.likelihood

Gamma-gamma marginal likelihood
bgnbd.PlotTrackingInc

BG/NBD Tracking Incremental Transactions Comparison
dc.DissipateElog

Dissipate Event Log
dc.FilterCustByBirth

Filter Customer by Birth
pnbd.PlotTrackingCum

Pareto/NBD Tracking Cumulative Transactions Plot
bgbb.PlotFrequencyInCalibration

BG/BB Plot Frequency in Calibration Period
pnbd.LL

Pareto/NBD Log-Likelihood
bgbb.ConditionalExpectedTransactions

BG/BB Conditional Expected Transactions
bgnbd.PlotRecVsConditionalExpectedFrequency

BG/NBD Plot Actual vs. Conditional Expected Frequency by Recency
dc.MergeCustomers

Merge Customers
bgnbd.pmf

BG/NBD Probability Mass Function
dc.ElogToCbsCbt

Convernt Event Log to CBS and CBT Matrices
dc.MakeRFmatrixCal

Make Calibration Period Recency-Frequency Matrix
bgnbd.PlotTransactionRateHeterogeneity

BG/NBD Plot Transaction Rate Heterogeneity
dc.GetFirstPurchasePeriodsFromCBT

Get First Purchase Periods from Customer-by-Time Matrix
pnbd.PlotTransactionRateHeterogeneity

Pareto/NBD Plot Transaction Rate Heterogeneity
dc.ReadLines

Read Lines
spend.expected.value

Conditional expected transaction value
pnbd.ExpectedCumulativeTransactions

Pareto/NBD Expected Cumulative Transactions
dc.BuildCBSFromCBTAndDates

Build CBS matrix from CBT matrix
pnbd.PlotDropoutRateHeterogeneity

Pareto/NBD Plot Dropout Rate Heterogeneity
subLogs

Subtract Logs
pnbd.compress.cbs

Compress Customer-by-Sufficient-Statistic Matrix
pnbd.Expectation

Pareto/NBD Expectation
dc.CreateReachCBT

Create Reach Customer-by-Time Matrix
cdnowElog

CDNOW event log data
bgnbd.PlotTrackingCum

BG/NBD Tracking Cumulative Transactions Plot
pnbd.ConditionalExpectedTransactions

Pareto/NBD Conditional Expected Transactions
dc.BuildCBTFromElog

Build Customer-by-Time Matrix from Event Log