Skip to content

procedures to save and load scikit-learn models #1

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

procedures to save and load scikit-learn models #1

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
74 changes: 74 additions & 0 deletions src/main/java/sklearn/SkLearnProcedure.java
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,74 @@
package sklearn;

import java.util.List;
import java.util.Map;
import java.util.stream.Stream;

import regression.LogisticModel;

import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Result;
import org.neo4j.helpers.collection.MapUtil;
import org.neo4j.logging.Log;
import org.neo4j.procedure.Context;
import org.neo4j.procedure.Mode;
import org.neo4j.procedure.Name;
import org.neo4j.procedure.Procedure;

public class SkLearnProcedure
{
@Context
public GraphDatabaseService db;

@Context
public Log log;

@Procedure(value = "sklearn.model.save", mode = Mode.WRITE)

public void save( @Name("name") String modelName,
@Name("module") String module,
@Name("class") String klass,
@Name("fields") Map<String,Object> fields)
{

String saveModelQuery = "MERGE (model:Model {name: {modelName} })\n" +
"SET model.module = {module}, model.class = {class}\n" +
"WITH model\n" +
"UNWIND keys({fields}) AS f\n" +
"CREATE (field:Field)\n" +
"SET field.key = f, \n" +
" field.value = {fields}[f].value,\n" +
" field.type = {fields}[f].type,\n" +
" field.dataType = {fields}[f].dataType,\n" +
" field.shape = {fields}[f].shape\n" +
"MERGE (model)-[:HAS_FIELD]->(field)";
Map<String, Object> params = MapUtil.map("modelName", modelName, "module", module, "class", klass, "fields", fields);

db.execute( saveModelQuery, params );

}

@Procedure(value = "sklearn.model.load")
public Stream<SkLearnModel> load( @Name("name") String modelName )
{
String loadModuleQuery = "MATCH (model:Model {name: {modelName} })\n" +
"RETURN model, [(model)-[:HAS_FIELD]->(field) | field] AS fields";
Map<String, Object> params = MapUtil.map("modelName", modelName);

Result result = db.execute( loadModuleQuery, params );
return result.stream().map( row -> new SkLearnModel( (Node) row.get( "model" ), (List<Node>) row.get("fields") ) );
}

public class SkLearnModel
{
public Node model;
public final List<Node> fields;

public SkLearnModel( Node model, List<Node> fields )
{
this.model = model;
this.fields = fields;
}
}
}