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Analysis of book sales prediction at Amazon marketplace in India: a machine learning approach

Author

Listed:
  • Satyendra Kumar Sharma

    (Birla Institute of Technology and Science (BITS Pilani))

  • Swapnajit Chakraborti

    (S. P. Jain Institute of Management and Research (SPJIMR))

  • Tanaya Jha

    (Birla Institute of Technology and Science (BITS Pilani))

Abstract

Prediction of customer demand is an important part of Supply Chain Management, as it helps to avoid over or under production and reduces delivery time. In the context of e-commerce, accurate prediction of customer demand, typically captured by sales volume, requires careful analysis of multiple factors, namely, type of product, country of purchase, price, discount rate, free delivery option, online review sentiment etc., and their interactions. For e-tailers such as, Amazon, this kind of prediction capability is also extremely important in order to manage the supply chain efficiently as well as ensure customer satisfaction. This study investigates the efficacy of various modeling techniques, namely, regression analysis, decision-tree analysis and artificial neural network, for predicting the sales of books at amazon.in, using various relevant factors and their interactions as predictor variables. Sentiment analysis is carried out to measure the polarity of online reviews, which are included as predictors in these models. The importance of each independent predictor variable, such as discount rate, review sentiment etc., is analyzed based on the outcome of each model to determine top significant predictors which can be controlled by the marketer to influence sales. In terms of accuracy of prediction, the artificial neural network model is found to perform better than the decision-tree based model. In addition, the regression analysis, with and without sentiment and interaction factors, generates comparable results. The comparative analysis of these models reveals several significant findings. Firstly, all three models confirm that review volume is the most important and significant predictor of sales of books at amazon.in. Secondly, discount rate, discount amount and average ratings have minimal or insignificant effect on sales prediction. Thirdly, both negative sentiment and positive sentiment of the reviews are individually significant predictors as per regression and decision-tree model, but they are not significant at all as per neural network model. This observation from the neural network model is contrary to the extant research which claims that both negative and positive sentiment are significant with the former having more influence in predicting sales. Finally, the interaction effects of review volume with negative and positive sentiment are also found to be significant predictors as per all three models. Hence, overall, out of various factors used for sales prediction of books, review volume, negative sentiment, positive sentiment and their interactions are found to be the most significant ones across all models. The results of this study can be utilized by online sellers to accurately predict the sales volume by adjusting these significant factors, thereby managing the supply chain effectively.

Suggested Citation

  • Satyendra Kumar Sharma & Swapnajit Chakraborti & Tanaya Jha, 2019. "Analysis of book sales prediction at Amazon marketplace in India: a machine learning approach," Information Systems and e-Business Management, Springer, vol. 17(2), pages 261-284, December.
  • Handle: RePEc:spr:infsem:v:17:y:2019:i:2:d:10.1007_s10257-019-00438-3
    DOI: 10.1007/s10257-019-00438-3
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    References listed on IDEAS

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    Cited by:

    1. Wen-Jie Ye & Anthony J. T. Lee, 2021. "Mining sentiment tendencies and summaries from consumer reviews," Information Systems and e-Business Management, Springer, vol. 19(1), pages 107-135, March.

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