etagit 0.0.2

CLI tagging system for experiment data

tagit

tagit is a command-line tagging system for experiment data, focusing on getting rid of researchers' waste of time on arranging the experiment data.

Core functionality

• Record shell command output with tags.
• Report data with specified tags in various media (terminal, csv file, and hierarchical files).
• List tags.
• Import/export data dump between systems.

An example: Lisa's story

Consider a curious sysadmin intern, Lisa, trying to discover the effect of system configurations on the performance (i.e. throughput) of server workloads. Lisa measures the performance by changing system configurations: OS, memory size, storage device, network, database and the number of worker threads. Since the total number of configuration sets is large (6 configurations with 3 different values each result in 729 combinations!), Lisa writes a simple script to record the experiment result hierarchically; configuration values are saved as directory trees (e.g., ubuntu1804/8/HDD/10/mysql/16/result.txt). After all combinations are tested, Lisa wants to analyze the results using spreadsheet, however, only the raw data is saved under directory structure. Lisa googles out and notices that she should do the two jobs: convert each data to useful data, and accumulate them into one file (e.g., .csv) that spreadsheet apps can import. Lisa spends a day to learn utilities needed for extracting like sed, awk and grep, and she finally makes it to import the data to spreadsheet.

After a month, Lisa decides to present her experiment as it is the last week of the internship. Unfortunately, she has lost the spreadsheet and what she got is only the raw data itself, but now Lisa has no problem in using various utilities. However, Lisa now finds a serious problem: what does '8' mean in the directory path?

Basic concepts

tagit has three main concepts: experiments, tags, and data.

• An experiment is a set of tagged data. Data in the same experiment commonly share a number of tags with different values. The name came from scientific methods, which usually involves collection of experiment results with different set of variables (which corresponds to tags in tagit).
• A tag is similar to variable in scientific experiments; it has a key and multiple values (e.g., "color=red", "color=yellow"). Since it is quite common for tags to stick to the optimal or final value in experiments, A tag may have the default value (coming soon!)
• A data is the element of tagit. Each data may have multiple tags (e.g., "color=red, shape=sphere").

Tutorial

# 1. Record the data
$ tagit record figures "color=red, shape=sphere, weight=10kg" -- echo "A red ball"
A red ball

$ tagit record figures "color=green, shape=sphere, weight=5kg" -- echo "A green ball"
A green ball

$ tagit record figures "color=yellow, shape=cube, weight=10kg" -- echo "A yellow box"
A yellow box


# 2. List experiments
$ tagit list
figures


# 3. Report the data
$ tagit report figures
[figures] (color=red, shape=sphere, weight=10kg)
A red ball
[figures] (color=green, shape=sphere, weight=5kg)
A green ball
[figures] (color=yellow, shape=cube, weight=10kg)
A yellow box

$ tagit report tutorial "shape=sphere, weight, color"
[figures] (shape=sphere, weight=10kg, color=red)
A red ball
[figures] (shape=sphere, weight=5kg, color=green)
A green ball


# 4. Delete a data
$ tagit manage figures -r "weight=10kg"

$ tagit report figures
[figures] (color=green, shape=sphere, weight=5kg)
A green ball


# 5. Delete an experiment
$ tagit manage figures -d

$ tagit list