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HOME DEPOT KAGGLE
TEAM AMBARWAVES.C
DATA EXPLORATION
Training data scored in particular way
Hard to fit such a distribution
Train vs Test
Training data is smaller
Both have unique products
Train, Test vs. Description
All the products have a description
Train, Test vs. Attributes
Not all the products have attributes
Train, Test vs. Brand Name
Not all the products have a brand name
STRATEGY/WORKFLOW
Flow Charts
TEXT CLEANING
Basics
Fix Casing : Hammer > hammer
Remove Symbols: ft. > ft
Remove Stop Words: hammer for nails > hammer nails
POS Tagging: hammer > [hammer,noun]
Lemmatization: drills > drill
Stemming: running > run
Want custom lookup tables
Don't want to go through all the
data manually . . .
More Advanced
Standardize Numbers : Five > 5
Standardize Measurements: 2 feet by 4 inches > 2x4
Split Joined Words: wiremesh > wire mesh
Correct Spelling: insullation > insulation
Reduce Synonyms: lopper > shear
FEATURES
The Objective
The Features
Direct Match
• Match
Count
• Last Word
Match
• Brand
Matching
Ratios
• Search
Term Hit
Ratio
• Target Hit
Ratio
Length
• Search
Term
• Title
• Description
Disconnected
• Word
Power
Scores
• Synonym
Scores
The Document Term Matrix
When all you have is a Home Depot hammer . . .
Text Mining Features with doc2vec – cosine distances
1.Distance (Product Title + Product Description vs. Search Term)
2. Categorical Data: Distance (Product Title vs. Product Title)
MODEL BUILDING AND SELECTION
Model Comparison
Best Model

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Kaggle presentation v3