qatch 0.2.4

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QATCH: Benchmarking SQL-centric tasks with Table Representation Learning Models on Your Data

This repository is the official implementation of QATCH: Benchmarking SQL-centric tasks with Table Representation Learning Models on Your Data to appear in NeurIPS Dataset and Benchmark track 2023.

🔥 Updates

• [2024-Jan-22]: Add DAMBER: (Data-AMBiguity testER)
• [2024-Jan-10]: Add JOIN tests for proprietary data
• [2023-Dec-15]: new License: Apache-2.0
• [2023-Nov-06]: Camera ready version is now available! check it out!
• [2023-Nov-05]: QATCH can now be donwloaded from pip! Do not forget to check the documentation!

🏴󠁶󠁵󠁭󠁡󠁰󠁿 Overview

• What is QATCH? Query-Aided TRL Checklist (QATCH) is a toolbox to highlight TRL models’ strengths and weaknesses on prorietary tables for Question Answering (QA) and Semantic Parsing (SP).
• How does it work? Given a proprietary database as input, it generates a testing checklist for QA and SP.
• More specifically? A query generation algorithm crafts tests by means of the expressive power of SQL.
• Ok cool, that's it? To evaluate the model's predictions, we propose 5 new metrics intra and inter tuple.
• Where is processed the data? The data is processed locally. We do not store any data. If you use the ChatGPT wrapper the data is processed by OpenAI.
• Where can I check the results? The generated tests along with the predictions and the metric scores can be downloaded here. This is to prevent the costly generation of test results with the openAI API and to build trust in our results.

QATCH's automatically generates and evaluates test checklists on TRL models based on the three-step process depicted below:

1. QATCH-Generate. It generates a set of queries tailored to proprietary data. For each query it formulates both the SQL declaration, its free-text version, and the expected ground truth consisting of table instances. The SQL declaration expresses the logical complexity of the query and reflects the presence/absence of specific features peculiar to relational data model such as presence of missing values and duplicate values.

2. TRL Model Predictions. It processes the tests for various TRL models and tasks. The current toolbox version supports three Table Representation Learning (TRL) models for QA: TAPAS, TAPEX and Omnitab. In addition, two LLMs are implemented for QA and SP ChatGPT 3.5 (need the API key) and LLama2 (need the HuggingFace token).

3. QATCH-Evaluate. It evaluates the models outputs according to a set of cross-task performance metrics.

QATCH’s metrics are computed between the model output (prediction) and expected ground-truth results (target). The target is the answer of the NL question "Show me all the data" over a table with three tuples and two attributes.

Given the ground truth result (target) with three tuples over two attributes, we report the metric values for five predictions, coming either from a QA or from the execution of a query in SP. More details can be found in the metrics folder

Who should use QATCH?

QATCH is designed to create "behavioral testing" checklist for QA and SP tasks. The checklist is used to understand in which case the models fail when processing proprietary data for QA and SP tasks.

In a corporate setting, there are at least three scenarios where a given TRL model needs to be evaluated against proprietary datasets:

• Comparison: Compare TRL models fine-tuned on private examples to see which one performs best.
• Validation: As crafting examples is expensive, verify when the quality meets the requirements.
• Maintenance: Fine-tuned models need to be re-calibrated to avoid data and conceptual shifting, continuous evaluation helps the identification of this issue.

But the usage of QATCH it is not limited to the TRL models. Indeed, we propose two scenarios where QATCH can be used with LLMs:

• LLM compatibility version: Compare different version of the same LLMs to see the best performing one.
• Prompt engineering: Analyse the best prompt definition based on the proprietary data.

Use case example of engineer Walter. With QATCH it is able to create a model ranking on his proprietary data for QA and SP.

Project

|-- metric_evaluator.py # user interface to calculate metrics for QA or SP
|-- test_generator.py # user interface to run different SQL generators
|--database_reader
    |-- single_database.py # initialise single database 
    |-- multiple_databases.py # handle multiple single database instances
|-- metrics
    |-- metric_evaluator.py # wrapper to initialise the user selected metrics
    |-- abstract_metric.py # abstract class to handle common metric methods
    |-- cell_precision_tag.py # implement cell precision tag
    |-- cell_recall_tag.py # implement cell recall tag
    |-- tuple_cardinality_tag.py # implement tuple cardinality tag
    |-- tuple_constraint_tag.py # implement tuple constraint tag
    |-- tuple_order_tag.py # implement tuple order tag
|-- models
    |-- chatgpt
        |-- abstract_chatgpt.py # abstract class to handle common methods for ChatGPT
        |-- chatgpt_QA.py # implement chatgpt for QA task
        |-- chatgpt_SP.py # implement chatgpt for SP task
    |-- chatgpt
        |-- abstract_llama2.py # abstract class to handle common methods for LLama2
        |-- llama2_QA.py # implement llama2 for QA task
        |-- llama2_SP.py # implement llama2 for SP task
    |-- abstract_model.py # abstract class to handle common model methods
    |-- tapas.py # implement input processing and the prediction for TAPAS
    |-- tapex.py # implement input processing and the prediction for TAPEX
    |-- omnitab.py # implement the input processing and the prediction for Omnitab
|-- sql_generator
    |-- abstract_sql_generator.py # handle common methods for SQL generators
    |-- select_generator.py # implement SELECT tests
    |-- distinct_generator.py # implement DISTINCT tests
    |-- orderby_generator.py # implement ORDERBY tests
    |-- where_generator.py # implement WHERE tests
    |-- groupby_generator.py # implement GROUPBY tests
    |-- having_generator.py # implement HAVING tests
    |-- simple_agg_generator.py # implement SIMPLE AGG tests
    |-- null_generator.py # implement NULL generator tests

⚡️ Quickstart

Installation

You can install QATCH by running the following commands:

# Using poetry (recommended)
poetry add QATCH

# Using pip
pip install QATCH 

Since QATCH is intended to be used without the inference step, the base installation does not come with the models' requirements. However, in case you want to use our implementation you can add the extras requirements.

# Using poetry (recommended)
poetry add QATCH -E model

# Using pip
pip install QATCH[model] 

How to use QATCH with my data?

1. Load your input data

Create a connection between your data and the tool. If your data is not stored in a sqlite database you can use our code to generate it.

import pandas as pd
from qatch.database_reader import SingleDatabase

data = {
    "year": [1896, 1900, 1904, 2004, 2008, 2012],
    "city": ["athens", "paris", "st. louis", "athens", "beijing", "london"]
}
table = pd.DataFrame.from_dict(data)
db_tables = {'olympic_games': table}

# create database connection
# create the sqlite database in "db_save_path/db_id/db_id.sqlite".
db = SingleDatabase(db_path="db_save_path", db_name="db_id", tables=db_tables)

Now we can create a connection with multiple databases:

from qatch.database_reader import MultipleDatabases

# The path to multiple databases
db_save_path = 'test_db'
databases = MultipleDatabases(db_save_path)

2. QATCH-Generate: Generates the tests

from qatch import TestGenerator

# init generator
test_generator = TestGenerator(databases=databases)

# generate tests for each database and for each generator
tests_df = test_generator.generate()

3. TRL Model Predictions: if you want to use any version of Tapas/Tapex for QA in Huggingface or chatGPT you can use the already implemented modules but it is NOT mandatory.

from tqdm import tqdm

from qatch.models import Tapas

# init the model 
model = Tapas(model_name="google/tapas-large-finetuned-wtq")

# iterate for each row and run prediction
tqdm.pandas(desc=f'Predicting for {model.name}')
tests_df[f'predictions_{model.name}'] = tests_df.progress_apply(
    lambda row: model.predict(
        table=databases.get_table(db_id=row['db_id'], tbl_name=row['tbl_name']),
        query=row['question'],
        tbl_name=row['tbl_name']
    ),
    axis=1
)

4. QATCH-Evaluate: Evaluate the results.

from qatch import MetricEvaluator

evaluator = MetricEvaluator(databases=databases)
tests_df = evaluator.evaluate_with_df(tests_df,
                                      prediction_col_name="<prediction_col_name>",
                                      task="QA or SP")

The final dataframe contains:

• db_id: The database name associated with the test.
• tbl_name: The table name associated with the test.
• sql_tags: the SQL generator associated with the test.
• query: The generated query from step 1.
• question: The generated question from step 1. Used as input for the model.
• predictions_<model_used>: The predicted query/cells from step 2.
• 5 metrics: The metrics used to evaluate the models.

🏰 Reproduce Experiments

Install and prepare data

We suggest to create a data folder in the project to store all the data but it is not mandatory.
In case the input data are not in this folder, remember to change in read_data the base_path argument

mkdir data/

These are the tables we use to generate the results in the main paper.
Notice that QATCH perfectly works with any table and the following are only a selected sample to higlight results in the paper.

Data	Link	# rows	# categorical cols	# numerical cols	example cols
Spider	link	-	-	-	-
Sales-transactions	link	500k	5	3	ProductNo, Date
Fitness-trackers	link	565	8	3	Brand Name, Display
Account-fraud	link	1M	4	26	DaysSinceRequest, Velocity6h
Late-payment	link	2466	6	6	InvoiceDate, Disputed
Heart-attack	link	303	1	11	# trtbps, # oldpeak
Breast-cancer	link	686	5	6	pgr, rfstime
Adult-census	link	32.6k	9	6	education, fnlwgt
Mushrooms	link	8.1k	23	0	cap-shape, ring-type

Run Experiments

Current version of QATCH supports SP and QA tasks, however since we rely on third-party models not all the experiments can be run using QATCH. Supported models:

• QA models: Tapas, Tapex, ChatGPT_QA, LLama2_QA and Omnitab
• SP models: ChatGPT_SP and LLama2_SP

For the proprietary data:

python main_reproducibility.py -gtf proprietary --task QA --model_name Tapas -dsp test_db --inject_null_percentage 0.0

For Spider:

python main_reproducibility.py -gtf spider --task QA --model_name Tapas -dsp test_db --inject_null_percentage 0.0

Instead, for the not supported models (because an API does not exist), the only difference is that the prediction phase has to be done by the user.