tie-formation-food

This repository contains publicly available data and code for paper "Formation of Social Ties Influences Food Choice: A Campus-wide Longitudinal Study".

The description of the data

1. Healthiness annotations.

In file /data/healthiness_annotations.xlsx, the annotations of healthiness are available (0: likely to be healthy, 1: likely to be unhealthy, 2: unclassifiable).

2. Food item categorization.

File /data/categories.csv contains category classification of food items.

The description of the code

Although the transactional data cannot be made publicly available, data processing scripts and notebooks containing analyses and plotting code (Figures 1,2, 4-14, Tables 1 and 2) are available in the /code folder. Contents:

preprocessing_find_frequent_pairs.py: The script for identifying frequent eating pairs by monitoring the queues.
feature_extraction: Notebook with code for feature extraction from raw transaction logs.
descriptive.ipynb: The notebook to produce Figures 1 and 2.
seasonality.ipynb: The notebook to produce Figure 5.
matching.ipynb: The pipeline for matched incident user design comparisons. Notebook to produce Figures 6, 7, 8, 9, and Table 1.
sensitivity.R: Script to compute gamma.
pooled_analyses.ipynb: Notebook to produce Figures 10, 11, 13, and Table 2.
dose_response.ipynb: Notebook to produce Figure 12 and difference-in-differences estimates.
categories.ipynb: Notebook to produce Figure 14.

Reference

Please cite the paper when using the data:

Formation of Social Ties Influences Food Choice: A Campus-Wide Longitudinal Study, Kristina Gligorić, Ryen W. White, Emre Kiciman, Eric Horvitz, Arnaud Chiolero, and Robert West. Proc. ACM Hum.-Comput. Interact.5, CSCW1, Article 184 (April 2021)