Projects
From questions to evidence
Methods, results, and limits from modeling, data, and software work.
Overview
Project archive
Nine projects across modeling, data analysis, and software systems.
- 09
- Topics
- 04
- Modeling
- 03
- Data studies
- 02
- Software systems
Audio intelligence
VocalPureNet encoding and denoising
Balancing quality, size, and computation.
Method
Time-frequency features and a two-stream U-Net for classification and denoising.
Result
File size fell 25.49%, distortion fell 70.78%, and 14-class accuracy reached about 95%.
Engineering reliability
Thermoelastic optimization for chip packaging
Thermal mismatch and defects in BGA and QFN packaging.
Method
Equivalent material models, finite-element analysis, and sensitivity checks.
Result
Corner displacement 3.82×10⁻² mm, effective CTE 22.86 ppm/°C, and modulus 27.75 GPa.
Combinatorial optimization
Municipal waste collection routing
Balancing cost and emissions under practical constraints.
Method
Savings, clustering, nearest-neighbor construction, and simulated annealing.
Result
A nine-vehicle plan with station, ten-year cost, and daily carbon estimates.
Cooperative optimization
UAV smoke-screen deployment
Three-dimensional motion, visibility geometry, and coordinated search.
Method
Geometric screening tests with differential evolution, genetic algorithms, and simulated annealing.
Result
One device achieved 4.9 s of screening; three coordinated UAVs reached 16.1 s.
Distributed analytics
MovieLens user preference analysis
Million-rating analysis on a three-node Hadoop cluster.
Pipeline
HDFS and Hive for cleaning, joining, and aggregation.
Findings and limits
Popular films had steadier ratings; the 3% sample limits broader inference.
Machine learning
Titanic survival prediction
A controlled comparison of three classifiers.
Evaluation
Accuracy, confusion matrices, and ROC–AUC on one train/test split.
Result
Random forest performed best with 83.41% accuracy and 0.889 AUC.
Java development
Campus lost-and-found system
An object-oriented command-line information system.
Functions
Accounts, guest access, permissions, and lost-and-found record management.
Structure
Layered services, file persistence, shared validation, and exception handling.
Full-stack · Supabase
Bilingual guestbook and secure admin console
Public messages, administrator replies, and moderation.
Postgres and RLS
Structured message storage with restricted public reads and submissions.
Auth and protection
Supabase Auth, AAL2 TOTP, input checks, a honeypot, and database rate limits.
Multivariate statistics
Applied multivariate analysis
Inference, classification, and dimension reduction for multivariate data.
Methods
Multivariate tests, clustering, discrimination, PCA, and factor analysis.
Interpretation
Compared standardized and raw results to show the effect of scale.