Latent Semantic Analysis for NLP

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prerequisites
intermediate Python (particularly NumPy, Matplotlib, and/or seaborn) • vectors and spaces from linear algebra
skills learned
clean data with regular expressions • mathematical concepts and how and when to apply latent semantic analysis and cosine similarity
Nicole Königstein
1 week · 8-10 hours per week · INTERMEDIATE
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At Finative, an ESG analytics company, you’re a data scientist who helps measure the sustainability of publicly traded companies by analyzing environmental, social, and governance (ESG) factors so Finative can report back to its clients. Recently, the CEO has decided that Finative should increase its own sustainability. You’ve been assigned the task of saving digital storage space by storing only relevant data. You’ll test different methods—including keyword retrieval with TD-IDF, computing cosine similarity, and latent semantic analysis—to find relevant keywords in documents and determine whether the documents should be discarded or saved for use in training your ML models.

This project is designed for learning purposes and is not a complete, production-ready application or solution.

project author

Nicole Koenigstein

Nicole Königstein currently works as data science and technology lead at impactvise, an ESG analytics company, and as a quantitative researcher and technology lead at Quantmate, an innovative FinTech startup that leverages alternative data as part of its predictive modeling strategy. She’s a regular speaker, sharing her expertise at conferences such as ODSC Europe. In addition, she teaches Python, machine learning, and deep learning, and holds workshops at conferences including the Women in Tech Global Conference.

prerequisites

This liveProject is for ML engineers, intermediate-level Python programmers, and early-stage data scientists who are familiar with the basics of linear algebra. To begin these liveProjects you’ll need to be familiar with the following:

TOOLS
  • Intermediate Python (declaring variables, loops, branches, working with arrays)
  • How to use Jupyter Notebook
  • Understanding of systems of linear equations, vector spaces, and matrix transformations
  • Basic familiarity with NumPy (indexing arrays, array creation, and manipulation)
  • Basic understanding of regular expressions to manipulate a string
TECHNIQUES
  • Basic linear algebra
  • Basic data science

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