# Terrier Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/terrier
> Markdown URL: https://aitinkerers.org/technologies/terrier.md
> Technology record last updated: 2026-03-07T18:27:51Z
> Generated: 2026-09-21T01:34:51Z

Terrier is an open-source search engine framework designed for rapid development of large-scale information retrieval applications.

Developed at the University of Glasgow, Terrier (Terabyte Retriever) handles high-volume indexing and retrieval for datasets like the 25-billion-page ClueWeb12. It provides researchers and engineers with a modular Java library to implement state-of-the-art ranking models (BM25, PL2, DFR) and query expansion techniques. The framework supports diverse data formats (HTML, PDF, WARC) and integrates directly with Hadoop for distributed processing. Its lean architecture makes it a standard choice for TREC evaluations and enterprise-grade search experimentation.

- Official technology site: https://terrier.org/
- Public AI Tinkerers demos and talks: 2
- Result page: 1 of 1

## Recent Public Talks and Demos

### [Más allá del RAG: Grafos universales para datos no universales](https://santiago.aitinkerers.org/talks/rsvp_Ic5kPKxkc3I)

Hoy, la mayoría de los sistemas de information retrieval usan arquitecturas tipo RAG o GraphRAG: se basan en búsqueda semántica, embeddings y modelos de lenguaje para recuperar información relevante.

- Event context: Estructura, Risa y Ecosistemas: el nuevo ADN de la IA Chilena — 2025-10-29 — Santiago
- Public talk page: https://santiago.aitinkerers.org/talks/rsvp_Ic5kPKxkc3I

### [Covariate Search](https://hong-kong.aitinkerers.org/talks/rsvp_bHTSKW0CfRo)

The first practical application of covariate search (with the potential of revolutionizing the search industry) by introducing a new modality. In the demo I am showcasing how we can vectorize a set of keywords semantically and perform a search on other sets (this is not currently possible with semantic search).

- Event context: AI Tinkerers - Hong Kong Meetup (December) - Inauguration — 2024-12-19 — Hong Kong
- Public talk page: https://hong-kong.aitinkerers.org/talks/rsvp_bHTSKW0CfRo

## Related Technologies

- [Apache Lucene](https://aitinkerers.org/technologies/apache-lucene) ([Markdown](https://aitinkerers.org/technologies/apache-lucene.md)) — 2 public demos
- [BM25](https://aitinkerers.org/technologies/bm25) ([Markdown](https://aitinkerers.org/technologies/bm25.md)) — 5 public demos
- [Elasticsearch](https://aitinkerers.org/technologies/elasticsearch) ([Markdown](https://aitinkerers.org/technologies/elasticsearch.md)) — 5 public demos
- [Embeddings](https://aitinkerers.org/technologies/embeddings) ([Markdown](https://aitinkerers.org/technologies/embeddings.md)) — 22 public demos
- [FAISS](https://aitinkerers.org/technologies/faiss) ([Markdown](https://aitinkerers.org/technologies/faiss.md)) — 17 public demos
- [HNSW](https://aitinkerers.org/technologies/hnsw) ([Markdown](https://aitinkerers.org/technologies/hnsw.md)) — 7 public demos
- [Solr](https://aitinkerers.org/technologies/solr) ([Markdown](https://aitinkerers.org/technologies/solr.md)) — 2 public demos
- [TF-IDF](https://aitinkerers.org/technologies/tf-idf) ([Markdown](https://aitinkerers.org/technologies/tf-idf.md)) — 3 public demos
- [Covariate search](https://aitinkerers.org/technologies/covariate-search) ([Markdown](https://aitinkerers.org/technologies/covariate-search.md)) — 1 public demo
- [GraphRAG](https://aitinkerers.org/technologies/graphrag) ([Markdown](https://aitinkerers.org/technologies/graphrag.md)) — 13 public demos
- [Language Models](https://aitinkerers.org/technologies/language-models) ([Markdown](https://aitinkerers.org/technologies/language-models.md)) — 4 public demos
- [RAG](https://aitinkerers.org/technologies/rag) ([Markdown](https://aitinkerers.org/technologies/rag.md)) — 147 public demos
- [semantic search](https://aitinkerers.org/technologies/semantic-search) ([Markdown](https://aitinkerers.org/technologies/semantic-search.md)) — 5 public demos
- [Vector Search](https://aitinkerers.org/technologies/vector-search) ([Markdown](https://aitinkerers.org/technologies/vector-search.md)) — 12 public demos