Metrics   29931

« earlier    

[1701.08381] Random Forest regression for manifold-valued responses
An increasing array of biomedical and computer vision applications requires the predictive modeling of complex data, for example images and shapes. The main challenge when predicting such objects lies in the fact that they do not comply to the assumptions of Euclidean geometry. Rather, they occupy non-linear spaces, a.k.a. manifolds, where it is difficult to define concepts such as coordinates, vectors and expected values. In this work, we construct a non-parametric predictive methodology for manifold-valued objects, based on a distance modification of the Random Forest algorithm. Our method is versatile and can be applied both in cases where the response space is a well-defined manifold, but also when such knowledge is not available. Model fitting and prediction phases only require the definition of a suitable distance function for the observed responses. We validate our methodology using simulations and apply it on a series of illustrative image completion applications, showcasing superior predictive performance, compared to various established regression methods.
machine-learning  representation  to-understand  regression  metrics  distance-measures 
yesterday by Vaguery
[0806.1416] Highway Hull Revisited
A highway H is a line in the plane on which one can travel at a greater speed than in the remaining plane. One can choose to enter and exit H at any point. The highway time distance between a pair of points is the minimum time required to move from one point to the other, with optional use of H.
The highway hull HH(S,H) of a point set S is the minimal set containing S as well as the shortest paths between all pairs of points in HH(S,H), using the highway time distance.
We provide a Theta(n log n) worst-case time algorithm to find the highway hull under the L_1 metric, as well as an O(n log^2 n) time algorithm for the L_2 metric which improves the best known result of O(n^2).
We also define and construct the useful region of the plane: the region that a highway must intersect in order that the shortest path between at least one pair of points uses the highway.
metrics  computational-geometry  optimization  rather-interesting  mathematical-recreations  to-write-about  consider:planning  consider:highway-positioning 
3 days ago by Vaguery
Glowroot
Open source Java APM
java  apm  metrics  logging  monitoring 
3 days ago by wjy

« earlier    

related tags

2017  academia  actionable  advertising  age-generation  aggregation  alerting  alerts  algorithms  align  amazon  analysis  analytics  api  apm  approximation  asap  asia  atlantic  aws  bay  beats  bigdata  biophysical-econ  book  britain  business  businesses  buzzfeed  c  casestudies  charts  chatterbot  china  churn  class  classification  cli  cliometrics  cloud  code  collections  comparison  complexity  computational-geometry  concentration-of-measure  concept  consider:highway-positioning  consider:looking-to-see  consider:planning  consider:representation  container  containers  cpu  critique  css  dashboard  data-science  data  data_format  data_visualisation  database  databases  dataviz  deep_learning  define-your-terms  deploy  design  designresearch  devel  development  devops  distance-measures  divergence  docker  early-modern  economics  effect-size  elastic  elasticsearch  elite  elixir  emailmarketing  emailopenrates  energy-resources  erlang  estimate  estimation  europe  evaluation  fermi  firms  font  fontforge  for  forwork  gems  gh  goal  grafana  graphite  graphs  gregory-clark  hadoop-metrics2  hadoop  hbase-metrics  hbase  hdp  height  higher-ed  history  hortonworks  howto  hr  hubspot  hypothesis-testing  identity  important  influxdb  infosec  interactivepublishing  iot  issue  jargon  java  javascript  kanban  knowhow  ktp  labor  language  legacy  library  limits  line-height  linearalg  list  loc  logging  longitudinal  lucene  machine-learning  magnitude  management  marketing  math.co  math  mathematical-recreations  measure  measurement  memory  methodology  metrics  mobile  mobility  models  monitoring  morning_money  multiclass-classifiers  natural-experiment  newrelic  nibble  nonprofit  nordic  nudge-targets  numerical-methods  objektbuch  onlineads  onlineaudio  onlinevideo  open-source  openaccess  openshift  opensource  opentsdb  operations  ops  optimization  overflow  papers  path-dependence  payment  pdf  performance-measure  performance  personalization  peter-bailis  philosophy-of-mathematics  phys-energy  platforms  pmf  postgresql  pricing  pro-rata  process  producthunt  productivity  programming  projectmanagement  prometheus  publishing  q-n-a  randfishkin  rather-interesting  realtime  reference  regression  reporting  representation  research  resource  review  roi  ruby  saas  salesforce  science  scrum  scrumban  security  selfdrivingvehicles  sensu  seo  server  service  setup  size  sloc  smartinsights  smoothing  socialmedia  socialnetwork  society  software  softwareengineering  solr  solution  source  spearhead  spectral  spectrum  spring  stack.ranking  stack  startup  statistics  stats  status  strategy  study  stylized-facts  subscription  subscriptions  success  support  surrealist_economics  sysadmin  tech  technology  testing  time-series  timeseries  tips  to-understand  to-write-about  tool  tools  top  top10  tricks  trust  tsd  type  typography  uber  unix  uptime  utilization  ux  virtualization  visual  visualization  visualstudio  wasserstein-distance  web  webdesign  webfont  wiki  youtube  🎩 

Copy this bookmark:



description:


tags: