No. 12 of 27 ·Data Preparation Software

timeseriesflattener

Linux · API

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Freedom report

One barScore 5.3

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

timeseriesflattener is ranked #12 of 27 in data preparation software on Freedom251. It runs on API, Linux.

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Free plan: Yes
Deployment: self_hosted

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The record

Purpose: timeseriesflattener is a Python package for generating time-series features used as predictors in machine-learning models.
Output: It converts irregular time series into a dataframe with one row per prediction time and columns for constructed features, aggregating values by an ID column.
Prediction windows: Feature specifications let users set prediction times and lookbehind windows for predictors or lookahead windows for outcomes.
Aggregations: Documented aggregators include count, earliest, latest, maximum, mean, minimum, slope, sum, unique count, and variance.
Feature types: The API documents temporal predictors, outcomes, boolean outcomes, static features, and time-delta features.
Missing values: Feature specifications accept a fallback value for cases where the relevant look window has no data.
Text: The text tutorial demonstrates generating flattened predictors from pre-embedded text represented as a dataframe with entity IDs, timestamps, and embedding columns.
Dataframes: The API accepts pandas or Polars dataframes for prediction-time and static frames.
Parallel processing: The introductory tutorial says n_workers can parallelize operations across multiple cores.
Install: The official installation page instructs users to install the package with pip using `pip install timeseriesflattener`.
Tutorials: The documentation provides downloadable Jupyter notebook tutorials that users can run locally.
Support: The docs direct bug reports and feature requests to GitHub Issues and usage questions or general discussion to GitHub Discussions.
Audience: The introductory tutorial says the package is especially helpful for complicated and irregular time series when training simple models.
Pricing and trial: The opened official documentation describes a Python package and installation instructions but states no price or free-trial terms.

Where it ranks on Freedom251

Best Data Preparation Software in 2026#12 of 27

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Sources

aarhus-psychiatry-research.github.io/timeseriesflattener/· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/aggregators.html· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/feature_specificati· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/tutorials/03_text.h· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/tutorials/01_basic.· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/installation.html· checked 4 Oct 2026
aarhus-psychiatry-research.github.io/timeseriesflattener/tutorials.html· checked 4 Oct 2026
joss.theoj.org/papers/10.21105/joss.05197· checked 4 Oct 2026