Regression Monkey

Regression Monkey is a reproducible regression workflow for empirical research. It connects structured data loading, dependency-aware refreshing, templated code generation, batch execution, and a Textual-based TUI for curating final tables. The goal is to replace ad-hoc notebooks with a traceable, automation-friendly stack. (中文介绍请见 README_zh.md。)

Highlights

• Deterministic data refresh – DataLoader modules produce single artifacts; DataManager tracks ArcticDB/PKL/DataLoader sources, semantic hashes, and dependency propagation.
• Task-centric modeling – StandardRegTask captures Y/X/control/fixed-effect specs, cluster options, incremental controls, and classification filters; tasks serialize cleanly and carry fingerprints for auditing.
• Code generation and execution – CodeGenerator renders Jinja2 templates (currently R) with dependency injection; CodeExecutor orchestrates task trees via rpy2, wiring datasets and capturing normalized results (including stepwise regressions).
• Table editing TUI – Textual UI lets you search tasks, attach columns (including stepwise variants), reorder/rename columns, and export reproducibility bundles (main.R, datasets).
• International-ready messaging – All runtime prompts, logs, and TUI notifications are in English for cross-team collaboration.

Components at a Glance

Installation

Requires Python 3.14+.

pip install regression_monkey

For development extras (testing, linting, packaging):

pip install "regression_monkey[dev]"

External Requirements

• R runtime if you plan to execute generated R code.
• rpy2 is installed automatically on non-Windows platforms (you can install it manually on Windows if R is available).
• ArcticDB requires system dependencies compatible with LMDB.

Quick Start

1. Define a DataLoader

# data_loader/users.py
from reg_monkey.data_loader import DataLoader
import pandas as pd

class UsersLoader(DataLoader):
    output_pkl_name = "users.pkl"

    def clean_data(self):
        df = pd.read_csv("source_data/users_raw.csv")
        df = df.dropna(subset=["firm_id"]).rename(columns={"signup_time": "ts"})
        self.df = df
        return df

2. Refresh/load datasets

from reg_monkey.data_manager import DataManager

dm = DataManager(target_symbols=["users"], project_root=".")
df_users = dm.get("users")  # hits Arctic/Pickle/DataLoader according to priority

3. Describe a regression task

from reg_monkey.task_obj import StandardRegTask
from reg_monkey.code_generator import CodeGenerator

task = StandardRegTask(
    name="baseline",
    dataset="users",
    y="y",
    X=["treatment"],
    controls=["size","age"],
    category_controls=["industry","year"],
    model="OLS",
    incremental_controls=True,
)

cg = CodeGenerator(task)
segments = cg.assembly(internal_output=True)
print(segments["combined"])  # rendered R script

4. Execute and inspect results

from reg_monkey.code_executor import CodeExecutor

executor = CodeExecutor(plan=None, datasets={"users": df_users})
executor.run_single_task(task, segments["combined"])  # custom helper you implement
print(task.exec_result["forward_res"]["coefficients"].head())

5. Launch the TUI

from reg_monkey.tui import run_app

run_app(code_executor=executor, config_path="output_mapping.json")

Use the TUI (Table List → Table Editor → Result Browser) to add columns, toggle stepwise results, rename labels, and export reproducibility bundles (main.R + datasets + metadata).

Reproducibility Exports

ExportService bundles:

• main.R with dependency installation, dataset loading, preparation sections, and regression execution (deduplicated by code hash).
• Feather/CSV datasets referenced in tables.
• Stepwise columns honoring user selections (enable columns via TUI and choose steps in the modal).

Project Layout

src/
  reg_monkey/
    data_loader.py
    data_manager.py
    task_obj.py
    code_generator.py
    code_executor.py
    planner.py
    export_service.py
    tui/
    r_template.jinja
  prd/        # design docs (Chinese allowed)
  bk/         # backups / historical references

Development Tips

• Run pytest for unit tests; TUI flows are best verified manually.
• Use ruff + black for lint/format.
• When touching the TUI, ensure output_mapping.json remains backward compatible (columns carry controls, parent_task_id, etc.).
• All user-facing text must remain in English.

Contributing

Pull requests are welcome. Please include:

1. A clear description of the change.
2. Tests or manual verification steps for regression-critical paths.
3. Documentation updates if behavior changes.

License

MIT