<s>[INST] # Introduction
Prior to navigation in extreme environments, a plan is developed for ensuring the success and safety of the crew. The proposed approach includes scouting an off-nominal landing site to estimate the complexity and resourcefulness of landing in that site. Determining the complexity includes analyzing the landing site for _hazards_, assigning a _landing probability_ to the identified hazards, and computing a _site complexity score_. The _resourcefulness_ of the landing site is measured in terms of available _landing resources_. The objective of the developed approach is to provide effective and flexible site complexity assessment and landing resources estimation for the evaluation of off-nominal landing sites.
The following is a sample XML document that represents an off-nominal landing site:
``` <site> <name>landing_site_1</name> <hazards> <hazardid="1"> <hazard_name>Rock</hazard_name> <hazard_location> <northing>1000</northing> <easting>2000</easting> </hazard_location> <hazard_severity>0.7</hazard_severity> <hazard_probability>0.9</hazard_probability> </hazard> <hazardid="2"> <hazard_name>Slope</hazard_name> <hazard_location> <northing>1500</northing> <easting>2200</easting> </hazard_location> <hazard_severity>0.4</hazard_severity> <hazard_probability>0.3</hazard_probability> </hazard> </hazards> ```<landing_resources>  <available_resource>  <name>Dumping_Crater</name>  <value>consistent</value>  </available_resource>  </landing_resources> </site>
The following is an XSLT stylesheet used to provide flexible strategies of processing an XML representation of an off-nominal landing site, capturing site complexity assessment, and estimating landing resources:
``` <xsl:stylesheetversion="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <!-- site element --> <xsl:template match="site">  <xsl:element name="site_complexity">  <xsl:value-ofselect="sum(hazards/hazard/@hazard_probability)"/>  </xsl:element>  <xsl:element name="landing_resources">  <xsl:value-ofselect="count(landing_resources/available_resource)"/>  </xsl:element>  </xsl:template> </xsl:stylesheet>
Although the above XSLT stylesheet is used for capturing site complexity assessment and estimating landing resources, there are no notes on what logic is used for computing site complexity score from available hazard probabilities and how resourcefulness of landing site is measured in terms of available landing resources. The following questions are presented:
``` ```
All hazards with probability greater than or equal to 0.8 have to be assigned a _hazard severity score_ of 0.98. Otherwise, score 0.8 will be assigned. How the described XSLT stylesheet has to be updated in order to include rules for computing _hazard severity score_ based on _hazard probability input_?[/INST]