Hi, I'm Yaphet — welcome to my workshop.
Yaphet Lemiesa
@yaphetlemiesa.vercel.app
MIT and NASA work stays private — ask, and I'll walk you through it.
- Shipped projects
- 21
- Publications
- 3
- Open-source PRs
- 5
selected
Projects
Pulled live from GitHub. Click any project for what it is, why I built it, and what the tradeoffs taught me.
Awards
Publications
Research on AI and cyber-risk modeling for critical infrastructure — full record on Google Scholar.
How Does AI Transform Cyber Risk Management?
Systems, 13(10), 835
AI on Small and Noisy Data is Ineffective for ICS Cyber Risk Management
2025 Winter Simulation Conference (WSC), 2611–2622
How should managers use AI for critical infrastructure risk management?
Forbes India
Open source contributions
Pull requests filed against projects I don't own.
Defensive prompt-injection benchmark for measuring agent robustness. Fixed a hex-decoding edge case and clarified a CLI help string.
Robotic pick-and-place visual servoing project (IBVS control, state machine, depth estimation). Contributed cube-detection integration and scene setup.
Fixed a validation bug in the SSH provider where SSHRemoteJobOperator's cleanup step raised a spurious error whenever remote_base_dir was customized. Added regression tests. PR open, pending maintainer review.
Fixed DynamoDB Number attribute size calculation to use significant digits instead of decimal string length, aligning moto's item-size check with real DynamoDB behavior. PR open, pending maintainer review.
Fixed a verbose-logging bug in the fuzzer's maketodo script where diagnostic output was mixed into stdout, corrupting the todo-list data file consumed downstream in the build. Routed diagnostics to stderr. PR open, pending maintainer review.
Current initiatives
What's running outside of a repository. Click one to read the full entry.
Helped organize a 5-hour sprint hackathon at MIT, sponsored by Claude.
Read entry →EXTERNALSelamta Family ProjectSupporting families for orphaned and abandoned children in EthiopiaOrganized a charity event at Montgomery Blair High School to support the project.
Read entry →EXTERNALMIT EESAEthiopian & Eritrean Students Association at MITCommunity and culture for Ethiopian and Eritrean students at MIT.
Read entry →