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1. JYOTHI PANDURANGA
TechKlout
Quantify Your Tech Expertise

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4.5M Users 26.5 M Posts 86.5 M Votes
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5. <row Id="6" PostTypeId="1” CreationDate="2008-07-31T22:08:08.620" Body="&lt;p&gt;I have an absolutely positioned
&lt;code&gt;div&lt;/code&gt; containing several children, one of which is a relatively positioned &lt;code&gt;div&lt;/code&gt;. When I use a
&lt;strong&gt;percentage-based width&lt;/strong&gt; on the child &lt;code&gt;div&lt;/code&gt;, it collapses to
&lt;code&gt;0&lt;/code&gt; width on IE7, but not on Firefox or Safari. &lt;/p&gt;&#xA;&#xA;&lt;p&gt;If I use &lt;strong&gt;pixel
width&lt;/strong&gt;, it works. If the parent is relatively positioned, the percentage width on the child
works.&lt;/p&gt;&#xA;&#xA;&lt;ol&gt;&#xA;&lt;li&gt;Is there something I'm missing here? &lt;/li&gt;&#xA;&lt;li&gt;&lt;p&gt;Is there an
easy fix for this besides the &lt;em&gt;pixel-based width&lt;/em&gt; on the&#xA;child? &lt;/p&gt;&lt;/li&gt;&#xA;&lt;li&gt;&lt;p&gt;Is
there an area of the &lt;code&gt;CSS&lt;/code&gt; specification that covers this?&lt;/p&gt;&lt;/li&gt;&#xA;&lt;/ol&gt;&#xA;"
OwnerUserId="9" LastEditorUserId="494659" LastEditorDisplayName="Rich B” Score="156" ViewCount="11840" LastEditDate="2015-04-
26T14:37:49.673" LastActivityDate="2015-04-26T14:37:49.673" Title="Why doesn't the percentage width child in absolutely positioned
parent work?" Tags="&lt;html&gt;&lt;css&gt;&lt;css3&gt;&lt;internet-explorer-7&gt;" AnswerCount="5" CommentCount="0"
FavoriteCount="7" />
<row Id="86" PostTypeId="2" ParentId="4" CreationDate="2008-08-01T14:23:28.087" Body="&lt;p&gt;A more generic answer for the
generic question &quot;Decimal vs Double?&quot;: &lt;strong&gt;Decimal&lt;/strong&gt; for monetary calculations to preserve the
precision, &lt;strong&gt;Double&lt;/strong&gt; for scientific calculations that do not get affected by small differences. Since Double is a type
which is native to the CPU (internal representation is stored in &lt;em&gt;base 2&lt;/em&gt;), calculations made with Double perform
better then Decimal (which is represented in &lt;em&gt;base 10&lt;/em&gt; internally).&lt;/p&gt;&#xA;" OwnerUserId=“39"
LastEditorUserId="2354564" LastEditorDisplayName="huseyint" LastEditDate="2014-07-11T14:42:28.547" LastActivityDate="2014-07-
11T14:42:28.547" Score="68" CommentCount="0" />

6. Future Data
Sources
User Data
Data Ingestion Batch Layer Serving Layer

7. Schema
UserId Date Topic PostTypeId Count
1234 09/30/2014 Spark 2 3
5678 01/02/2015 C++ 1 5
UserId Date Topic VoteTypeId Count
4321 10/30/2014 Java 2 3
2222 02/09/2015 Hadoop 3 10

8. AWS Cost - $1.651/hour
4xm4-XL Nodes
$0.252/hour/node
1xm4-L Node
$0.126/hour/node
4xm4-L Nodes
$0.126/hour/node
1xt2 micro Node
$0.013/hour/node

9. Challenges
• Data is stateless and spread across multiple XML
files for the same event
• Joining on big RDDs was too slow.
• Spark/HDFS library incompatibilities
• Java Serialization issues

10. Future Ideas
• Based on user skill set, recommend unanswered questions in other topics that the
user may be able to answer to improve their score
• Implement rating based on Elo rating system
• Provide data on the software that most likely to provide good results for a specific
issue
• Extend the model to other fields of industry (home improvement, DIY etc.,)

11. Jyothi Panduranga