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Description of Simulation Data Setting and Algorithm Parameter Settings in the LDC&MGM

This repo provides a clean implementation of LDC algorithm using all the best practices.

Simulation Dataset

The simulation dataset used in the paper is generated by the cupid.makeclumps simulation in the Starlink software package. For details of Starlink, please visit: http://starlink.eao.hawaii.edu/starlink

Parameter Setting of Simulation Data：

  • Peak = [2,10]
  • Size1 = [2,2.5]
  • Size2 = [3.5,4]
  • Size3 = [3,5] (FWHM = 2.3548*Size)
  • Trunc = 0.0001
  • rms = 1
  • [m,n]: Uniform distribution of interval [m,n]
  • Data size: 120*120*120
  • Number of simulation cloud cores in a single data block：10(low),40(medium),100(high)
  • Total number of simulated cloud cores:10000

Synthetic Dataset

Parameters setting of simulation cloud cores generation in synthetic datasets:

  • Peak = [2,5]
  • Size1 = [0.5,2]
  • Size2 = [0.5,2]
  • Size3 = [2,7]
  • rms = 0
  • [m,n]: Uniform distribution of interval [m,n]
  • Data size: 181*361*68(Same size as M16 13CO spectral data)
  • Randomly selected 15 synthetic single uncut simulation cloud cores to any location, while removing parts beyond the 13CO data block boundary.
  • Total number of simulated cloud cores:10000

demo

Parameter Setting of Algorithm

Experiments on Simulation Datasets

Parameter Settings of LDC&MGM

  • ρ_0=3σ
  • δ_0=4
  • ∇_0=0.01
  • n_0=128
  • d_c=0.8

Parameter Settings of FellWalker Algorithm

  • FELLWALKER.MAXJUMP=3.3
  • FELLWALKER.MINDIP=1*RMS
  • FELLWALKER.MINHEIGHT=1*RMS
  • FELLWALKER.MINPIX=128
  • FELLWALKER.NOISE=RMS

Parameter Settings of GaussClumps Algorithm

  • GAUSSCLUMPS.MINWF=0.8
  • GAUSSCLUMPS.MODELLIM=0.5
  • GAUSSCLUMPS.NPAD=10
  • GAUSSCLUMPS.NPEAK=9
  • GAUSSCLUMPS.NSIGMA=3
  • GAUSSCLUMPS.NWF=10
  • GAUSSCLUMPS.RMS=1
  • GAUSSCLUMPS.S0=1
  • GAUSSCLUMPS.SA=1
  • GAUSSCLUMPS.SB=0.1
  • GAUSSCLUMPS.SC=1
  • GAUSSCLUMPS.THRESH=2

Experiments on simulation datasets

Parameter Settings of LDC&MGM

  • ρ_0=1.5
  • δ_0=4
  • ∇_0=0.01
  • n_0=27
  • d_c=0.6

Parameter Settings of FellWalker Algorithm

  • FELLWALKER.MAXJUMP=3.3
  • FELLWALKER.MINDIP=1*RMS
  • FELLWALKER.MINHEIGHT=1*RMS
  • FELLWALKER.MINPIX=32
  • FELLWALKER.NOISE=RMS

Parameter Settings of GaussClumps Algorithm

  • GAUSSCLUMPS.MINWF=0.8
  • GAUSSCLUMPS.MODELLIM=0.5
  • GAUSSCLUMPS.NPAD=10
  • GAUSSCLUMPS.NPEAK=9
  • GAUSSCLUMPS.NSIGMA=3
  • GAUSSCLUMPS.NWF=10
  • GAUSSCLUMPS.RMS=RMS
  • GAUSSCLUMPS.S0=1
  • GAUSSCLUMPS.SA=1
  • GAUSSCLUMPS.SB=0.1
  • GAUSSCLUMPS.SC=1
  • GAUSSCLUMPS.THRESH=2