### Model Information This model, Llama-3.1-8B-Instruct-Spatial-SQL-1.0, is an 8B, narrow use case, text to spatial SQL, lightly fine-tuned model. In general, its primary use case is the Natural Language command adaptation of particular geographic spatial functions as normally defined in pure SQL. Data input should be a combination of an English prefix in the form of a question, and a coordinate prompt injection, likely from an active mapping system application coordinate list. Output is PostGIS spatial SQL. There are four primary geographic functions released in version 1.0. **Model developer**: Mark Rodrigo **Github**: https://github.com/mprodrigo/spatialsql **Docker**: https://hub.docker.com/r/kartoza/postgis **Model Context Protocol (MCP)**: https://github.com/modelcontextprotocol/servers/tree/main/src/postgres **Model Architecture**: The model is a QLoRA / Supervised Fine Tuning (SFT) ### Model Input / Output Overview: Input: Text plus coordinate prompt injection.
Output: **PostGIS spatial SQL**
NOTE: Inputs and outputs are in meters and or geographic decimal degrees WGS 84 coordinates. | Function | Question Input | Geo Input | SQL Execution Output | |:---------:|:---------------:|:---------:|:-------------------------:| | Area | Area question | Polygon | Number - Area sq meters | | Centroid | Center question | Polygon | Point | | Buffer | Buffer distance | Point | Polygon | | Length | Length question | Line | Number - Length in meters | ### Example Prompt / Prompt File <|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are a helpful assistant. You are an expert at PostGIS and Postgresql and SQL and psql.

\### Input:

{input}

\### Input: What is the area for the polygon? : 'Polygon ((-3.7515154 40.3855551, -3.7514972 40.3856581, -3.7507005 40.3855767, -3.7507167 40.3854722, -3.7515154 40.3855551))'

\### Input: ¿Cuál es el área para el polígono? : 'Polygon ((-3.7515154 40.3855551, -3.7514972 40.3856581, -3.7507005 40.3855767, -3.7507167 40.3854722, -3.7515154 40.3855551))'

\### Input: 多邊形的面積是多少？ : 'Polygon ((-3.7515154 40.3855551, -3.7514972 40.3856581, -3.7507005 40.3855767, -3.7507167 40.3854722, -3.7515154 40.3855551))'

\### Response: SELECT ST_Area(geog) As area FROM (select 'Polygon ((-3.7515154 40.3855551, -3.7514972 40.3856581, -3.7507005 40.3855767, -3.7507167 40.3854722, -3.7515154 40.3855551))' :: geography geog) subquery;

CENTROID

\### Input: What is the centroid for the polygon? : 'Polygon ((-3.6934636 40.4808785, -3.6933352 40.4811486, -3.6930125 40.4810598, -3.693141 40.4807897, -3.6934636 40.4808785))'

\### Input: ¿Cuál es el centroide del polígono? : 'Polygon ((-3.6934636 40.4808785, -3.6933352 40.4811486, -3.6930125 40.4810598, -3.693141 40.4807897, -3.6934636 40.4808785))'

### Input: 多邊形的質心是什麼？ : 'Polygon ((-3.6934636 40.4808785, -3.6933352 40.4811486, -3.6930125 40.4810598, -3.693141 40.4807897, -3.6934636 40.4808785))'

\### Response: SELECT ST_AsText(ST_Centroid(geog)) As centroid FROM (select 'Polygon ((-3.6934636 40.4808785, -3.6933352 40.4811486, -3.6930125 40.4810598, -3.693141 40.4807897, -3.6934636 40.4808785))' :: geography geog) subquery;

BUFFER

\### Input: What is the thousand meter buffer for the following point? : 'Point(-8.7522658 41.3862664)'

\### Input: ¿Cuál es el buffer de mil metros para lo siguiente punto? : 'Point(-8.7522658 41.3862664)'

\### Input: 以下點的千米緩衝區是多少？ : 'Point(-8.7522658 41.3862664)'

\### Response: SELECT ST_AsText(ST_Buffer(geog, 1000)) as buffer FROM (select 'Point(-8.7522658 41.3862664)' :: geography geog) subquery;

LENGTH

\### Input: How long is the line? : 'LINESTRING (-3.6976693 40.4263178, -3.6986082 40.4258729)'

\### Input: ¿Cuánto dura la línea? : 'LINESTRING (-3.6976693 40.4263178, -3.6986082 40.4258729)'

\### Input: 隊伍有多長？ : 'LINESTRING (-3.6976693 40.4263178, -3.6986082 40.4258729)'

\### Response: SELECT ST_Length(geog) As length FROM (select 'LINESTRING (-3.6976693 40.4263178, -3.6986082 40.4258729)' :: geography geog) subquery;

### A Few Known Question Variation Examples

AREA

What is the area for the geometry?

What is the area for this polygon?

CENTROID

What is the centroid for the geometry?

What is the center point of the polygon?

BUFFER

What is the 100 meter buffer for the following point?

Buffer the following point a thousand meters.

What is the 1000 meter buffer for the following point?

LENGTH

What is the length of the line?

How long is this line? ### llama.cpp / Hyperparameter Recommendations For Inference max context ~ 8,000 or lower

top k ~ 100

temp ~ .4-.5 or lower ### Agent Considerations Agents are being considered as a separate project. Agents would mostly be related to pulling the coordinates from a mapping UI, and executing the SQL from responses against a PostGIS database. ### Further Reference - link this https://postgis.net/docs/manual-3.3/PostGIS_Special_Functions_Index.html#PostGIS_GeographyFunctions ### Evaluation data More information needed ### Training data Custom synthetic ### Training hyperparameters The following hyperparameters were used during training: - learning_rate: 2e-04 - train_batch_size: 10 - eval_batch_size: 3 - distributed_type: multi-GPU - num_devices: 2 - optimizer: Adam 8bit - lr_scheduler_type: linear - num_epochs: 3 ### Training results | Training Loss | Epoch | Step | Validation Loss | |:-------------:|:------:|:----:|:---------------:| | 0.5438 | 3 | 10 | 0.5247 | | 0.4889 | 3 | 20 | 0.4494 | | 0.4072 | 3 | 30 | 0.4051 | ### Framework versions - Transformers 4.44.0 - Pytorch 2.4.0 - peft 0.12.0 - Datasets 2.21.0 - Tokenizers 0.19.1