∇ mfalt
Helsingborg / Lund · SE
~/$ whoami

I build things.

AI systems rooted in research.

I'm Mattias — co-founder of Klang.ai, where we build production AI for speech and language. Based in Helsingborg, Sweden.

Before Klang, I did a PhD at Lund University on first-order methods for convex optimization, with research stints at Caltech and UC San Diego along the way.

The day job is engineering. The publications below are where the math still lives.

nameMattias Fält
handle@mfalt
fieldml · opt · control
phdLund · 2021
now coding
$ tail -f work.log
10:42:17[research]tightened rate bound for relaxed APR
11:08:33[klang]shipped batched ASR endpoint · p99 -34ms
11:36:02[eval]WER 6.2 → 5.8 on internal sv corpus
12:05:48[klang]merged streaming decoder w/ partial hypotheses
02 ::

Open source

03 ::

Publications

scholar →
  1. 2016 [46 cites]
    Line Search for Averaged Operator Iteration
    P. Giselsson, M. Fält, S. Boyd · 2016 IEEE 55th Conference on Decision and Control (CDC)
    DOI → arXiv →
  2. 2017 [23 cites]
    Optimal convergence rates for generalized alternating projections
    M. Fält, P. Giselsson · 2017 IEEE 56th Annual Conference on Decision and Control (CDC)
    DOI → arXiv →
  3. 2017 [9 cites]
    Line Search For Generalized Alternating Projections
    M. Fält, P. Giselsson · 2017 American Control Conference (ACC)
    DOI → arXiv →
  4. 2021 [3 cites]
    Generalized Alternating Projections on Manifolds and Convex Sets
    M. Fält, P. Giselsson · Journal of Nonsmooth Analysis and Optimization
    DOI → arXiv →
  5. 2019 [3 cites]
    QPDAS: Dual Active Set Solver for Mixed Constraint Quadratic Programming
    M. Fält, P. Giselsson · 2019 IEEE 58th Conference on Decision and Control (CDC)
    DOI → arXiv →
  6. 2019 [3 cites]
    System Identification for Hybrid Systems using Neural Networks
    M. Fält, P. Giselsson · arXiv preprint arXiv:1911.12663
    arXiv →
+ load 8 more
  1. 2016 [3 cites]
    ControlSystems.jl: A Control Systems Toolbox for Julia
    F.B. Carlson, M. Fält · github
    GitHub →
  2. 2015 [3 cites]
    Variable elimination for scalable receding horizon temporal logic planning
    M. Fält, V. Raman, R.M. Murray · 2015 American Control Conference (ACC)
    DOI → PDF →
  3. 2015 [2 cites]
    Online horizon selection in receding horizon temporal logic planning
    V. Raman, M. Fält, T. Wongpiromsarn, R.M. Murray · 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
    DOI → Lund →
  4. 2018 [1 cites]
    A seemingly polynomial-time algorithm for optimal curve fitting by segmented straight lines
    O. Troeng, M. Fält · 2018 IEEE Conference on Decision and Control (CDC)
    DOI → PDF →
  5. 2015 [1 cites]
    Using ADMM for hybrid system MPC
    M. Fält, L. Jimbergsson · Mastersthesis
    Lund →
  6. 2021
    Convergence Analysis and Improvements for Projection Algorithms and Splitting Methods
    M. Fält · PhD Thesis, Lund University
    Lund →
  7. 2019
    Sparsity-constrained optimization of inputs to second-order systems
    O. Troeng, M. Fält · 2019 18th European Control Conference (ECC)
    DOI → PDF →
  8. 2018
    Envelope functions: Unifications and further properties
    P. Giselsson, M. Fält · Journal of Optimization Theory and Applications
    DOI → arXiv →
04 ::

Contact

klang.ai github linkedin scholar