~/talks

Cheng Zhang

what they talk about

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where they keep going back

  • POPL2 editions2022–2025
  • TyDe2 editions2020–2023
  • UIST2 editions2020–2021

all 9 in the filters

on a stage with

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who talks about the same things

titleconferencedate
From Rewriting to Fixpoints: Solving Recursive Equations with E-GraphsEGRAPHS 20262026-06-15
Extends e-graphs to represent recursive variables by adding secondary definitional edges that link a variable to its definition without merging, builds a…
Talk on
Domain Reasoning In TopKAT: Reduction and CompletenessTPSA 20252025-01-19
TopKAT is incomplete over relational models: there exists an inequality true in every relational TopKAT but unprovable from TopKAT axioms, yet adding that…
Talk
CF-GKAT: Efficient Validation of Control-Flow TransformationsPOPL 20252025-01-19
Extends GKAT to handle hardcoded indicator variables and non‑local control flow (goto, break, return) and proves sound, complete trace‑equivalence by…
Talk
A Dependently Typed Language with Dynamic EqualityTyDe 20232023-09-04
Designs a dependently typed language that defers equality checking to runtime and replaces many static rejections with warnings, inserting explicit casts and…
Talk on
On Incorrectness Logic and Kleene Algebra with Top and TestsPOPL 20222022-01-16
Kleene Algebra with Tests (KAT) cannot express incorrectness triples because it lacks an explicit codomain operation; adding a single top element yields…
Talk
HandyTrak: Recognizing the Holding Hand on a Commodity Smartphone from Body Silhouette ImagesUIST 20212021-10-10
HandyTrak is a software pipeline that takes front-facing camera silhouettes, segments body outlines, and feeds them to a user-dependent CNN to classify left…
Talk on
NeckFace: Continuously Tracking Full Facial Expressions on Neck-mounted WearablesUbiComp 20212021-09-21
A neck-mounted IR camera system reconstructs continuous full-face expressions by feeding chin and mouth images into NeckNet based on ResNet34 and regressing 52…
Talk on
TeethTap: Recognizing Discrete Teeth Gestures using Motion and Acoustic Sensing on an EarpieceIUI 20212021-04-13
TeethTap is a 3D‑printed earpiece with IMU and contact microphone that recognizes 13 discrete teeth gestures using bandpass denoising, SVM for noise detection…
Talk on
C-Face: Continuously reconstructing facial expressions by deep learning contours of the face ...UIST 20202020-10-20
Ear-mounted RGB cameras embedded into headphones and earphones capture facial contour silhouettes and a CNN regresses 42 landmarks (mouth, eyes, eyebrows)…
Talk on
VibroSense: Recognizing home activities by deep learning subtle vibrations on an interior ...UbiComp / ISWC 20202020-09-12
A system uses a single-point Laser Doppler vibrometer on a wall or ceiling to capture subtle structural vibrations, applies Wavelet denoising, STFT into…
Talk on
FingerTrak: Continuous 3D Hand Pose Tracking by Deep Learning Hand Silhouettes Captured by ...UbiComp / ISWC 20202020-09-12
A wristband prototype with four 32×24 thermal cameras and a ResNet34-based deep network reconstructs 20 joint 3D hand poses from wrist silhouettes only, using…
Talk on
Developing a Dependently Typed Language with Runtime Proof SearchTyDe 20202020-08-23
Prototype implements a call-by-value dependently typed language that delays constraint solving by adding an admit syntax and a three-stage pipeline: light type…
Talk on
Understanding the Cost of Driving TripsCHI 20172017-05-06
Built a phone app plus an OBD dongle that shows an estimated total cost per drive — fuel, depreciation from KBB, maintenance, insurance and prorated fixed…
Talk on
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