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Time Series Forecasting Holt Winters in R and Python

We have data on product sales at a monthly level of aggregation, with up to 5 years worth of data (varies by product) in a single csv file. Some forecasts are strongly seasonal, others a linear trend and others are fairly uniform. We require a robust monthly forecast for each product for each of the next 12 months. There are about 650 products and a total of about 15500 records. Note data has missing records where we sold zero, or where products were introduced or ceased part way through (treat these as zero). We want a batch program written in something like R or python that will produce sensible forecasts without intervention. There will be little human intervention. We would like a Holt Winters model with some statistical testing of parameters so that we adopt seasonality, trend if we find it, not otherwise. I believe there are libraries in R that can do this. I can look at re-formatting data if required. The output format is more fixed. We would also like a measure of forecast error (standard deviation) along with central forecast. I will post the actual data file to pre-qualified freelancers. We would also like separate program that can output a file with weekly values from the monthly file (a simple subdivision based on the number of mondays in each month - equal weekly value to be the same within a given month.

Skills: Data Mining, Data Processing, Python, Statistical Analysis, Statistics

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About the Employer:
( 72 reviews ) Harrogate, United Kingdom

Project ID: #17927163

35 freelancers are bidding on average $464 for this job

schoudhary1553

Hello, Hope you are doing well. I can help with you in your project Forecasting Holt Winters in R and Python. I can assure you the quality job. I have good experience in Data Mining, Data Processing, Python, S More

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(197 Reviews)
7.4
mingxiao2008

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(47 Reviews)
7.0
zekovicm

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6.8
sumbali

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(129 Reviews)
6.4
blakehamm

With 2+ years as a statistician and piloting of successful forecast projects in R, I am an ideal candidate. I have experience with a variety of packages and data formats including Holt Winters forecasting of seasonal, More

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(19 Reviews)
6.2
aki003iitr

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Piao217

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5.6
alkarajput3131

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5.3
davidngo817

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(14 Reviews)
5.4
stead121

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$500 USD in 10 days
(14 Reviews)
5.2
DevDataAnalyst

I can implement holt winters using R , however I'd prefer to work with a small subset. Also I can create an application in Shiny to display predicted results

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(56 Reviews)
5.4
dinhfreedom

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(26 Reviews)
5.5
invincible1428

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(25 Reviews)
5.1
raghavajay3

do kindly share across the data, I will start developing on r studio

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(33 Reviews)
4.6
cyash61

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(8 Reviews)
4.3
JMITSolution

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daniyal3214

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houssemhariz1990

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2.5
ranjan2303

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1.6