Tickr AI Research & Engineering

Research By

Michael Gou

Michael is a senior data scientist at Tickr who works primarily in developing machine learning algorithms to enhance Tickr's products and services. He has a strong background analyzing large and complex datasets using econometric and statistical methods. His expertise in employing advanced econometric techniques for causal inference enhances the precision and depth of his analytical contributions. Before joining Tickr, Michael was a tax manager at PwC where he led statistical analyses for various projects that helped recommend business decisions for a diverse set of clients. Michael holds a PhD in Economics from the University of California, Irvine and brings a wealth of expertise in data-driven insights.

Exploring Walk-Out Rates with Shopper Journey Data
Shopper Journey Data provides insights into why shoppers choose to purchase certain products at specific Retailers over others. Analyzing timestamps and basket-level purchases from the Ohio region, allows us to observe whether shoppers make subsequent trips for specific products on the same day. Our findings illustrate that walk-out rates vary by retailer, food category, and brand. Convenience and dollar stores have higher walk-out rates compared to grocery stores, likely due to their smaller size and limited assortments. Certain food categories have greater variation in walk-out rates across retailers, indicating that certain retailers are better at capturing the appropriate product assortment or provide more appealing pricing and promotions.
Continue Reading
Identifying Substitutable Goods using Large-scale Shopping Cart Basket Data across Retailers & Geography
In a previous post, substitutable goods were identified by leveraging large-scale shopping cart data to estimate a sequential probabilistic model called “SHOPPER,” developed by Ruiz, Athey, and Blei. In this post, the analysis is expanded by analyzing shopping cart data from several retailers across various geographical regions. Similar products are queried to investigate how the ranked lists of substitutable products vary across different retailers and geographies. These results provide insights into what products are substituted at various retailers and for the same retailers in different geographies.
Continue Reading
Improving Forecasting Models with Large Language Models
At Tickr, we enhance the data science life cycle using large language models (LLMs). We develop a solution, Generative Predictor Search (GPS), which integrates LLMs to improve the accuracy and efficiency of time series forecasts and provides intuitive interpretations of influential factors on forecasted variables. This approach not only reduces forecasting errors by 15.6% compared to naive univariate autoregression models but decreases run time by 13 times, establishing GPS as a leading solution in explainable forecasting.
Continue Reading
Identifying Substitutable Goods using Large-scale Shopping Cart Basket Data
This post addresses the challenge of identifying substitutable goods in consumer behavior analysis by leveraging large-scale shopping cart data. We introduce a sequential probabilistic model called "SHOPPER" developed by Ruiz, Athey, and Blei, to analyze hundreds of thousands of shopping trips encompassing millions of transactions. Our approach captures the complexity of consumer purchase behavior, considering various factors such as shopping purpose, seasonal variations, in-store promotions, and personal preferences.
Continue Reading
The Impact of Temperature on the Performance of Large Language Model Systems and Business Applications
In today's data-driven world, businesses are increasingly turning to advanced technologies to gain a competitive edge. Large language models ("LLMs") have emerged as a game-changer, enabling businesses to have intelligent conversations with data and extract valuable insights. In this study we explore the effects of LLM temperature, a concept borrowed from statistical physics and thermodynamics, on the impact of LLM business applications.
Continue Reading

Tickr AI Research & Engineering

Research By

Michael Gou

Exploring Walk-Out Rates with Shopper Journey Data

Identifying Substitutable Goods using Large-scale Shopping Cart Basket Data across Retailers & Geography

Improving Forecasting Models with Large Language Models

Identifying Substitutable Goods using Large-scale Shopping Cart Basket Data

The Impact of Temperature on the Performance of Large Language Model Systems and Business Applications