Created by: IvanPaez ivan.paez_anaya@irisa.fr Universite de Rennes 1 - INRIA Bretagne-Atlantique, France
Author(s): Viliam Simko, Ivan Paez Description: These are the worlflows of the fire monitoring example of the proactive approach
KNIME workflow: 01 - Download ISH metadata downloads a list of weather stations (ISH) from ftp.ncdc.noaa.gov some stations were only available in some years each station has a timespan (begin..end) geolocaton (lat/lon/elev) output is ish-hiostory.table file (KNIME internal format)
KNIME Workflow: 02 - Select ISH stations and download data this workflow takes only ISH stations from Mississippi that were active in the year 2010 downloads ".gz" compressed files containing their hourly temperatures from 2010 files are downloaded from ftp://ftp.ncdc.noaa.gov/pub/data/noaa/2010/ and stored /proact/data/ISH/ish-downloaded directory the workflow also contains some optional visualizations (using OSM Map View) list of all ISH stations list of stations in Mississippi list of stations in Mississippi with color representing distance from "MERIDIAN NAS" station Shell script: /proact/data/ISH/extract-ish-downloaded.sh extracts all ".gz" files (from ish-downloaded dir) into "*.txt" files (/proact/data/ISH/ish-extracted directory)
KNIME Workflow: 03 - Normalize ISH data reads data from ish-extracted dir converts them into CSV format while "normalizing" the data (e.g. interpolating missing values) CSV files are saved into /proact/data/ISH/ish-normalized directory there is an optional sub-workflow to visualize the quality of data (OSM Map View, green=ok, red=rubbish)
KNIME Workflow: 04 - Enrich ISH data
reads data from ish-normalized dir
removes low-quality data sources
data preprocessing:
compute moving averages (MAs) for past day (MA_Day_past), week (MA_Week_past), month (MA_Month_past)
computes daily seasonal component: SC_Day = MA_Day_past - MA_Month_past
computes fire potential (FirePotential) using a rule:
KNIME Workflow: 05 - Fire Reports (Download) downloads fire reports data (*.kmz files) from: MODIS: http://activefiremaps.fs.fed.us/data/kml/conus_hist/2010/ AVHRR: http://activefiremaps.fs.fed.us/data_avhrr/kml/conus_hist/ Stores the KMZ files into MapsDownload directory within KNIME workspace This files were moved manually to the folder /proact/data/Fire Reports/MODIS directory Further in the pipeline, only the MODIS data are used! All KMZ files are extracted into KML files in a temporary directory data from KML files are extracted using a XML parser (XPath expressions) all extracted data are stored in a single table: /proact/data/Fire Reports/FireReports.table (KNIME internal format) there is an optional visualization of the fire reports using "OSM Map View" (color represents the confidence of a report)
KNIME Workflow: 07 - Simulate Systems (by connecting Fires+Temp) from all fire reports, only the fires around Mississippi are taken (using Geo-coordinate filter) to speed-up further joining now, for each station separately, we enrich its "huge hourly table" with the following: number of fire reports per hour (FireCount) by joining the fires with stations using geo-location (CFG_FIRE_RADIUS=50km) predictions of fire potential using a MLP model we use single model that predicts 7 hours to future (by shifting this new time series, we get predictions for +6, +5, +4, +3, +2, +1) this could have been done better: either by always doing 7 predictions with a single model by using shifted inputs or by using 7 independently trained models tuned precisely for a specific hour, e.g. a model for +3 the decision for using MLP model has been done in a different KNIME workflow the model is trained on "MERIDIAN NAS" station and simulates predictions for all other stations the simulated predictions are stored as columns "FP+1", ..., "FP+7" output of the "Joiner / Fires+Temp data" node is the input for our simulation of Simple, Reactive and Predictive systems then we run our simulation using Java code from /proact/simulated-system.jar with different parameters for different type of system: Reactive Simple(every 1h) .. Simple(every 12h) Predictive(1) .. Predictive(7) Predictive(1)U .. Predictive(7)U Predictive(1)D .. Predictive(7)D Predictive(1)Di .. Predictive(7)Di each simulation adds "Transmissions", "Late Fires" and "Reconfigurations" columns then we also add "Power" column using a formula Power = aTransmissions + bReconfigurations then we compute relative values of the metrics (relative % to Reactive system) finally, we render the box-plots using Python Plot nodes
KNIME Workflow: 08 - Evaluation/Eval FirePotential Classification this workflow is used for choosing the right classifier
Author(s): Viliam Simko Ivan Paez
Date: Oct. 22, 2013 Last update: Mar 15 2015