Thai Procurement Intelligence

Overview

A bilingual public-data analytics workflow spanning official-source ingestion, SHA-256 verification, provenance, validation, evidence views, quality reporting, and source-linked assistant retrieval.

Problem

Procurement analysis needs source provenance, quality checks, bilingual evidence, and clear dataset-state communication before records can support credible comparisons.

Solution

Built provenance-aware ingestion and validation around an official DGA/CGD procurement snapshot, with bilingual evidence views, checksum verification, quality reports, security controls, and CI validation.

Technical Decisions

• Source identifiers and dataset mode remain visible rather than being collapsed into generic records.
• The application preserves a deterministic fallback path when official data is unavailable.

Outcome

The verified production deployment serves 250 official records with record-level provenance, source links, quality evidence, and bounded-snapshot limitations visible in the UI.

Key Features

• Production uses a governed 250-record official DGA/CGD snapshot with SHA-256 verification.
• Record detail pages retain source URL, snapshot ID, retrieval date, license, and quality evidence.
• Hybrid retrieval and assistant answers cite source-linked procurement records while keeping limitations visible.

Architecture

1. 01

   Official DGA/CGD snapshot

2. 02

   Provenance-aware ingestion

3. 03

   Checksum verification

4. 04

   Analytics API

5. 05

   Bilingual evidence UI

6. 06

   Quality reports

7. 07

   CI controls

Tech Stack

• Python
• FastAPI
• Next.js
• Data validation
• Evidence UI
• CI
• Public data analytics

Verification

• Production verified on 24 Jun 2026 at https://thai-procurement-intelligence.vercel.app
• 250 official records, 250 unique source IDs, checksum 413f70c0ef17c17233b99aa42a7f1e25284644948c37bd109c21e9cc0678618b
• Keyword search for ซื้อ returned 142 records; semantic search returned 2 records; assistant returned 3 cited records
• Quality status reports 250 valid records, 0 rejected records, and 0 duplicate records for the bounded snapshot

Security & Privacy

• Only public procurement data belongs in the official dataset path.
• Secrets and environment-specific configuration remain outside the repository.

Limitations

• Coverage is bounded to the approved 250-record snapshot, not complete national procurement coverage.
• The site is not real-time and does not claim evidence of corruption, misconduct, or production-scale accuracy.
• Generated summaries and assistant answers require review and are distinct from official source facts.

Future Improvements

• Add approved incremental official snapshots.
• Expand provenance and quality monitoring across source revisions.