<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Dear Jesus,</div><div><br></div><div>It has to do that the data you used for calibrating the models are not representative of the data of the overall study area. This is certainly a problem of extrapolation out of the climatic range.</div><div>Perhaps you should also remove ANN from the projections because it is very bad. Note that GAM, GLM and RF are not very good either. </div><div><br></div><div>Wilfried</div><div><br></div><div><br></div><br><div><div>Le 6 oct. 2011 à 15:56, Jesus a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><p class="MsoListParagraphCxSpFirst"><span lang="EN-GB">Dear Wilfried,</span></p><p class="MsoListParagraphCxSpFirst"><span lang="EN-GB">I made models for a species with diferent
algorithms and 10 runs per algorithm. However, my results are quite odd when I
project my models to the complete study area.<span>
</span>For some of the algorithms some of the runs look ok but other runs
appear all as 0. I explain more below.</span></p><p class="MsoListParagraphCxSpMiddle" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span lang="EN-GB"><span>a)<span style="font:7.0pt "Times New Roman""> </span></span></span><span lang="EN-GB">I make my models and then check my
binary predictions and the continuous values; they look OK.</span></p><p class="MsoListParagraphCxSpMiddle"><span lang="EN-GB">The Evaluation results of one run (as example) are:</span></p><div><span lang="EN-GB"></span><br class="webkit-block-placeholder"></div><p class="MsoListParagraphCxSpMiddle">
Cross.validation indepdt.data total.score Cutoff Sensitivity Specificity</p><p class="MsoListParagraphCxSpMiddle">ANN 0.657 none 0.83 0.999 66.667 98.644</p><p class="MsoListParagraphCxSpMiddle">
GAM 0.788 none 0.912 1.978 91.667 83.122</p><p class="MsoListParagraphCxSpMiddle">GBM 0.939 none 0.986 1.896 91.667 96.398</p><p class="MsoListParagraphCxSpMiddle">
GLM 0.78 none 0.913 1.995 83.333 86.969</p><p class="MsoListParagraphCxSpMiddle">RF 0.795 none 0.952 0.665 91.667 91.216</p><div><br class="webkit-block-placeholder"></div><p class="MsoListParagraphCxSpFirst" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span lang="EN-GB"><span>b)<span style="font:7.0pt "Times New Roman""> </span></span></span><span lang="EN-GB">Then I project the models to the
complete study area because in order to train the model I just used 9000 cells
of a separated file. However, I get the runs all with values that do not
correspond to the above mentioned prediction and all the map runs seem to be
the same. Besides that, my values in the colot graph go from “-1e-03” to
“1e-03”, but the maps are all of a continuous colour with a value of around 0.</span></p><p class="MsoListParagraphCxSpLast" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span lang="EN-GB"><span>c)<span style="font:7.0pt "Times New Roman""> </span></span></span><span lang="EN-GB">If I also check the binary
predictions of these projections I get exactly the same than above.</span></p><p class="MsoListParagraphCxSpFirst" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><span lang="EN-GB"><span>d)<span style="font:7.0pt "Times New Roman""> </span></span></span><span lang="EN-GB">When I extract the projections
directly without applying the BinRoc<span> </span>for
example, and then I apply the Cutoff value that appears in the
Evaluation.Results using for example ArcGIS for the algorithm and specific run
then my binary map is a bit different than when I just call the projection with
the binary predicition BinRoc directly from BIOMOD.</span></p><p class="MsoListParagraphCxSpLast"><span lang="EN-GB">Do you have any idea of what could be going wrong with the projections?
This is very weird because as I mentioned before the predictions and the binary
predictions look fine but the problems start with the projections in the
complete area. </span></p><p class="MsoListParagraphCxSpLast"><span lang="EN-GB">Thank you in advance.</span></p><p class="MsoListParagraphCxSpLast"><span lang="EN-GB">Jesus</span></p>
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<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><span class="Apple-style-span" style="font-size: 12px; "><div>--------------------------</div><div>Dr. Wilfried Thuiller</div><div>Laboratoire d'Ecologie Alpine, UMR CNRS 5553</div><div>Université Joseph Fourier</div><div>BP53, 38041 Grenoble cedex 9, France</div><div>tel: +33 (0)4 76 51 44 97</div><div>fax: +33 (0)4 76 51 42 79</div><div><br></div><div>Email: <a href="mailto:wilfried.thuiller@ujf-grenoble.fr">wilfried.thuiller@ujf-grenoble.fr</a><br>Personal website: <a href="http://www.will.chez-alice.fr/">http://www.will.chez-alice.fr</a><br>Team website: <a href="http://www-leca.ujf-grenoble.fr/equipes/emabio.htm">http://www-leca.ujf-grenoble.fr/equipes/emabio.htm</a><br><br>FP6 European MACIS project: <a href="http://www.macis-project.net/">http://www.macis-project.net</a><br>FP6 European EcoChange project: <a href="http://www.ecochange-project.eu/">http://www.ecochange-project.eu</a></div><div><br></div></span></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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