Sanchit Alekh salekh

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@google
Munich, Germany
18:48 (UTC -12:00)
https://www.linkedin.com/in/sanchitalekh

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salekh / hybrid-rag.py

Last active October 16, 2025 10:07

Implement a Hybrid RAG with Vertex AI Vector Search + Graph Search using Spanner Graph

	import os
	from dotenv import load_dotenv

	# --- Updated Imports for Google Gemini & Vertex AI ---
	from langchain_google_genai import ChatGoogleGenerativeAI, GoogleGenerativeAIEmbeddings
	from langchain_google_vertexai import VertexAIVectorSearch
	from langchain_community.graphs import SpannerGraph
	from langchain.chains import SpannerGraphQAChain

	from langchain_core.prompts import ChatPromptTemplate

salekh / MediaOperations.ts

Created September 30, 2019 15:26

Typescript version of lukechilds/merge-images that works with canvas2.6.0

	import * as Canvas from 'canvas';
	import { Image } from 'canvas';
	import axios from 'axios';

	export class MediaOperations {
	// Defaults
	public defaultOptions: any = {
	format: 'image/png',
	quality: 0.92,
	width: 100,

salekh / gcs-copyblob.py

Last active May 21, 2019 09:04

Copy blob from one GCS bucket to another

	def copy_blob(bucket_name, blob_name, new_bucket_name, new_blob_name):
	"""Copies a blob from one bucket to another with a new name."""
	storage_client = storage.Client()
	source_bucket = storage_client.get_bucket(bucket_name)
	source_blob = source_bucket.blob(blob_name)
	destination_bucket = storage_client.get_bucket(new_bucket_name)

	new_blob = source_bucket.copy_blob(
	source_blob, destination_bucket, new_blob_name)

salekh / rabbitmq-commands.txt

Created February 23, 2018 13:35

	rabbitmqctl add_user test test
	rabbitmqctl set_user_tags test administrator
	rabbitmqctl set_permissions -p / test "." "." ".*"

salekh / DFSTraverseOntology.java

Created May 21, 2017 01:02

Code to traverse an ontology via DFS

	public static OWLClass getUnvisitedChild(OWLClass owl, OWLOntology pOnt){
	Set<OWLClassExpression> children = owl.getSubClasses(pOnt);
	Iterator<OWLClassExpression> childIt = children.iterator();
	while(childIt.hasNext()){
	OWLClass currentChild = childIt.next().asOWLClass();
	if(!visited.contains(currentChild)){
	return currentChild;
	}
	}
	return owl;

salekh / LRWithBoldDriver.java

Created May 7, 2017 20:59

Part of a module to perform Logistic Regression for Author Disambiguation using a hybrid approach: Patent text + Metadata

	package preprocessing;

	import Evaluation.trainingDataMatrix;
	import base.pair;
	import base.patent;
	import clustering.distancefunction.AbstractDistance;
	import clustering.distancefunction.CosDistance;
	import org.carrot2.core.LanguageCode;
	import org.jblas.DoubleMatrix;
	import org.jblas.MatrixFunctions;

salekh / HierAggloClustering.java

Created May 7, 2017 20:33

Part of a module that performs Hierarchical Clustering to cluster patents for which we have a high confidence that they are authored by the same person Raw

	package algorithms;

	import base.PatentCluster;
	import base.PatstatPatent;

	import java.util.ArrayList;

	/**
	* Created by sanchitalekh on 14/03/2017.
	*/

salekh / sqlconn.class

Last active March 12, 2017 19:41

Connecting to MySQL Database from Java

	package base;

	import java.sql.Connection;
	import java.sql.DriverManager;
	import java.sql.SQLException;


	/**
	* Created by sanchitalekh on 12/03/2017.
	*/