Mining Resume

This repository contains programs to extract relevant fields from resumes and optionally build a knowledge graph (KG) for effective querying using a chatbot.

Detailed specifications are here and here

Features

Phase 0: Rule-based Extraction

• Extract important fields like name, email, phone, etc. from resumes based on patterns specified in a config.xml file.

How it works

• parser.py takes the config file and a directory containing text resumes as arguments.
• The config file specifies the fields to extract and their respective patterns.
• The parser logic is independent of the domain (resumes in this case), and changes or additions are made in the config file.
• Field extraction methods and patterns are defined in the config file.

Usage

• Prepare your own config.xml file similar to the provided one.
• For command-line execution, run python parser_by_regex.py.
• For a GUI, run python main.py.

Phase 1: LLM-based Extraction

• Uses an open-source model from Hugging Face as a Large Language Model (LLM) and a prompt for extraction.

Usage

• Run python parser_by_llm.py.

TODO

Phase 2:

• File to be created: parser_by_spacy.py
• Use spaCy-based Named Entity Recognition (NER) models for extraction.
• Build custom NER models if necessary. Data from rijaraju repo is at data\rijaraju_repo_resume_ner_training_data.json
• Add spaCy Matcher logic if needed.
• Output is json of key-value pairs, where Key is NER type and value is specific to the resume-person.
• Also extract relationships values, it Education as key and value as say CoEP, its date range etc.

Phase 3:

• File to be created: build_kg.py
• Build a Knowledge Graph (KG) based on the extractions.
• Nodes can represent entities like Person, Organizations, Skills, etc., and edges can represent relationships like "educated_in," "programs_in," etc.
• Central person-node can have person specific attributes, but other nodes like Autodesk or CoEP should not have, as other resume-person may also refer them. Resume-person specific attributes should be on edge from Yogesh to CoEP like date range, branch etc.
• Nodes like Python, NLP will be common and can come from different company nodes, like Icertis, Intuit etc.
• Schema design is critical as it decides which extractions can be NODES, EDGES and attributes on them.
• Follow standard schema like schema.org or DBpedia for resume extraction.
• Represent the KG initially in networkx format and later in Neo4j.
• Build a Streamlit app to upload resumes and visualize the KG or use Neo4j.

Phase 4:

• File to be created: resume_chatbot.py
• Use query languages like SPARQL or Cypher, depending on the KG's residence.
• Leverage LLMs to convert natural language English queries into SPARQL or Cypher.
• Build a Streamlit chatbot for querying the KG. See if you can visualize the built KG.
• Deploy the chatbot on Streamlit-Shares for limited (e.g., 5 resumes) public access.

Phase 5: Production

• Build an end-to-end system with payment integration as a pay-per-use MicroSaaS.
• Consider deploying on cloud platforms like VertexAI or Azure.

Disclaimer

• The author (yogeshkulkarni@yahoo.com) provides no guarantee for the program's results. It is a fun script with room for improvement. Do not depend on it entirely.

Copyright (C) 2017 Yogesh H Kulkarni