Flipkart Object Detection
Designed a visual feature pipeline with attention on the object in image Data Augmentation Technique along with its bounding box Used Single Stage Detector
Approach Focal Loss with YOLO
and SSD
Amazon Product Review classification
Data Cleaning/feature enginnering Linear/Non-Linear Model Deep Learning Attention Model
Pretrained Bert Model
Ensemble
Hike Friend Recommendation Very big Dataset(45M observation, graph edge-representation) Relational Feature Category Numerical
Graph Based features such as (adamic-adar
, common-resource-allocation
,...) SVD
feature for each userComunity-clustering
Subsemble
(I did this after competition is over, to understand more about sampling and model building)neighbour-based
feature(Removed highly cardinal feature)Also tried Deep learning approach
(Graph Embedding), but couldn't handle at that time properly
HDFC Risk Prediction
Feature Understanding(EDA
) feature engineering designed feature interaction tools ensemble model using xgboost/lighgbm/catboost
and linear/non-linear
simple model statistical model to understand the feature importance using p-values
Club Mahindra Hotel Room Price Prediction Category Numerical Relational Dataset
date-time
based featureAggregation
based featureRelational
FeaturesEnsemble using different set of tranformed
target space
Cifar-10 Classification using Conditional Feature
Comparison between ResNet and my modified feature pipeline Classification
Developed a weighted feature pipeline using global and local feature
. Global feature put constrained on local feature, to specifically focused on features of object
in imageBetter attention map around object
, which reflect its learned feature.Improved score by 1.37%
over Resnet
Facenet
Matching Network Approach
Build a Student-Attentdance hardware using arduino
Hard Mining Approach
(generate all permutation between classes to handle small dataset)network-in-network
approach to handle overfitting as i have very small dataset.Achieved 93%
accuracy
Few Shot Learning(Prototype Network)
Classification (training on very small dataset)
Prototype Algorithm
implementationThere is more to this(will update in future)
Hackerearth Platform Recommendation System
User-Problem Rating Prediction
My main concerns was to handle following question carefully: What is the strongest and weakest area of user? What is the level of problem? What problem user have just solved? If user gets stuck at current problem, what problem should help him(to gain confidence and to improve skill in that area)?Exploration and explotation strategy in recommending problem And many more?
JP.Morgan House Price Prediction
Date based feature and Dummy feature Interaction based feature
Bayesian optimization
out of fold prediction
to generate Meta feature
for ensemble
Stock Prediction
Future price prediction Regression
Deep learning approach using RNN and LSTM