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	<title>Statistically Significant</title>
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	<link>http://hhackerman.com</link>
	<description>The Life of Hoxie Ackerman</description>
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		<title>More Lumosity</title>
		<link>http://hhackerman.com/2012/12/more-lumosity/</link>
		<comments>http://hhackerman.com/2012/12/more-lumosity/#comments</comments>
		<pubDate>Wed, 05 Dec 2012 12:58:59 +0000</pubDate>
		<dc:creator>Hoxie</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://hhackerman.com/?p=540</guid>
		<description><![CDATA[Given the popularity of my previous posts discussing Lumosity and the fact that Lumosity&#8217;s number crunchers recently (presumably) collected enough data to provide more refined performance feedback, I thought I&#8217;d provide an update. Ater my initial push for the 99th percentile, I played for a couple more weeks and then abruptly stopped playing.  I figured [...]]]></description>
				<content:encoded><![CDATA[<p>Given the popularity of my previous posts discussing Lumosity and the fact that Lumosity&#8217;s number crunchers recently (presumably) collected enough data to provide more refined performance feedback, I thought I&#8217;d provide an update.</p>
<p>Ater my initial push for the 99th percentile, I played for a couple more weeks and then abruptly stopped playing.  I figured that the mountain of <a title="MOOCs" href="http://hhackerman.com/moocs/" target="_blank">MOOCs</a> would be enough to keep my brain stimulated, plus I was growing bored of most of the games available.  But about a week ago, I fired it up again to see if there were any new games available and because I had just read a <a title="Brain Changes Itself AZ" href="http://amzn.com/0143113100" target="_blank">couple</a> <a title="Brain Meditation Amazon" href="http://amzn.com/0345479890" target="_blank">books</a> about neural plasticity. (As the reviews suggest, the first one is better.)  When I played over the summer, it took me a while to work up to the level necessary to hit 99.  Jumping back into it now, I just started tearing things up immediately upon resuming.  Most of my old records were broken within just a couple days by a nontrivial amount, and they&#8217;ve been steadily improving too.  So perhaps whatever brain changes I prompted initially decided to stick around?  My health has also been improving lately, too, and that definitely helps with my ability to focus, process information, and remember things.</p>
<p>I&#8217;ve been playing games in each of the 5 categories, but the Memory games have been the most interesting lately.  As I mentioned previously, <a title="n-back @ WP" href="http://en.wikipedia.org/wiki/N-back" target="_blank">n-back</a> training seems to be about the best you can do to actually increase your intelligence, and that&#8217;s obviously an appealing outcome.  (That said, I do believe that there are many other things you can do to improve your mental performance, even if you&#8217;re not actually changing your innate intelligence level.)  Plus, they&#8217;re just more interesting to me, and there&#8217;s no way to ever &#8220;beat&#8221; many of them: until the laws of physics governing light, my eyeballs, and my fingers mean that I physically can&#8217;t answer questions any faster, there&#8217;s always room for improvement.  And believe me, there&#8217;s lots of room for improvement.</p>
<p>Some screenshots:</p>

<a href='http://hhackerman.com/2012/12/more-lumosity/lumos1/' title='lumos1'><img width="150" height="150" src="http://hhackerman.com/files/lumos1-150x150.jpg" class="attachment-thumbnail" alt="lumos1" /></a>
<a href='http://hhackerman.com/2012/12/more-lumosity/lumos3/' title='lumos3'><img width="150" height="150" src="http://hhackerman.com/files/lumos3-150x150.jpg" class="attachment-thumbnail" alt="lumos3" /></a>
<a href='http://hhackerman.com/2012/12/more-lumosity/lumos2/' title='lumos2'><img width="150" height="150" src="http://hhackerman.com/files/lumos2-150x150.jpg" class="attachment-thumbnail" alt="lumos2" /></a>

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		<title>Lumosity 99</title>
		<link>http://hhackerman.com/2012/07/478/</link>
		<comments>http://hhackerman.com/2012/07/478/#comments</comments>
		<pubDate>Tue, 31 Jul 2012 15:57:33 +0000</pubDate>
		<dc:creator>Hoxie</dc:creator>
				<category><![CDATA[Life]]></category>

		<guid isPermaLink="false">http://hhackerman.com/?p=478</guid>
		<description><![CDATA[A couple of weeks ago, I mentioned that I&#8217;ve been playing the online brain-training program, Lumosity.  One of my play goals was to get my overall BPI (Brain Performance Index) to the 99th percentile, which is where I&#8217;ve always scored on standardized tests. And today, after exactly one month of training, I made it! My [...]]]></description>
				<content:encoded><![CDATA[<p>A couple of weeks ago, I mentioned that I&#8217;ve been playing the online brain-training program, <a title="Lumosity Home" href="http://www.lumosity.com/" target="_blank">Lumosity</a>.  One of my play goals was to get my overall BPI (Brain Performance Index) to the 99th percentile, which is where I&#8217;ve always scored on standardized tests. And today, after exactly one month of training, I made it!</p>

<a href='http://hhackerman.com/2012/07/478/lumosity-2/' title='lumosity'><img width="150" height="150" src="http://hhackerman.com/files/lumosity1-150x150.jpg" class="attachment-thumbnail" alt="lumosity" /></a>
<a href='http://hhackerman.com/2012/07/478/lumosity2-2/' title='lumosity2'><img width="150" height="150" src="http://hhackerman.com/files/lumosity21-150x150.jpg" class="attachment-thumbnail" alt="lumosity2" /></a>
<a href='http://hhackerman.com/2012/07/478/lumosity3/' title='lumosity3'><img width="150" height="150" src="http://hhackerman.com/files/lumosity3-150x150.jpg" class="attachment-thumbnail" alt="lumosity3" /></a>

<p>My Speed score was holding me back for a while, but I finally had a couple good runs on Speed Match and Spatial Speed Match.  Penguin Pursuit seemed like the Speed game that I could really blow out of the water, so I did (Game BPI: 1680).  In general, though, the Speed offerings are disappointing.  Speed Match and Spatial Speed Match are basically the same game, and Rotation Matrix has absolutely nothing to do with speed.</p>
<p>My Problem Solving actually dipped into the 98th percentile for a while, mostly because on the Raindrops game, I quickly reach the point where the problems are obscuring each other.  Raindrops and Chalkboard Challenge seem to be the only games that count in this category, too.</p>
<p>The other three categories just slowly crept up.  I had a perfect run through Memory Matrix that did wonders for my Memory BPI.  And over the past few days, I really got into the groove on Brain Shift.  Good times.</p>
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		<title>Back in Florida</title>
		<link>http://hhackerman.com/2012/07/back-in-florida/</link>
		<comments>http://hhackerman.com/2012/07/back-in-florida/#comments</comments>
		<pubDate>Sat, 14 Jul 2012 13:32:00 +0000</pubDate>
		<dc:creator>Hoxie</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

		<guid isPermaLink="false">http://hhackerman.com/?p=447</guid>
		<description><![CDATA[I&#8217;m long overdue for a &#8220;back in Florida&#8221; blog post. Better late than never. I&#8217;m finishing a data structures and algorithms course through Coursera, offered by Stanford professor Tim Roughgarden, and it&#8217;s been great. The theory questions are of a good difficulty level, and the programming problems are thought-provoking and fun. I&#8217;m doing them in [...]]]></description>
				<content:encoded><![CDATA[<p>I&#8217;m long overdue for a &#8220;back in Florida&#8221; blog post. Better late than never.</p>
<p>I&#8217;m finishing a data structures and algorithms <a title="Algorithms I Home" href="https://www.coursera.org/course/algo" target="_blank">course</a> through <a title="Coursera Home" href="https://www.coursera.org/" target="_blank">Coursera</a>, offered by <a title="Stanford Home" href="http://www.stanford.edu/" target="_blank">Stanford</a> professor <a title="Tim Home" href="http://theory.stanford.edu/~tim/" target="_blank">Tim Roughgarden</a>, and it&#8217;s been great. The theory questions are of a good difficulty level, and the programming problems are thought-provoking and fun. I&#8217;m doing them in Python 2 (technically <a title="iPython @ WP" href="http://en.wikipedia.org/wiki/IPython" target="_blank">iPython</a>, with Emacs as my editor), though I should redo them in a lower-level language to make sure I&#8217;m not cheating when implementing some of these algorithms. I&#8217;d like to post a summary of my experiences and the highlights of the course when I&#8217;ve completed it in a few weeks.  I&#8217;d also like to go through <a title="Cormen @ AZ" href="http://amzn.com/0262033844">Cormen et al.</a> and achieve total mastery, but that&#8217;s going to take some time.</p>
<p>I just registered for a second Coursera <a title="Coursera SaaS" href="https://www.coursera.org/course/saas" target="_blank">course</a>: Software Engineering for Software as a Service (SaaS), offered by a couple of Cal professors. I don&#8217;t know too much about it, other than the fact that I&#8217;m going to be doing some Ruby on Rails, EC2, git, and Extreme Programming fueled assignments if I decide to stick with it. I&#8217;ve been wanting to play with Ruby for a while now, and web programming interests me, so I&#8217;ll probably give it a go.</p>
<p>I&#8217;m playing bass for about an hour every day and improving rapidly. I tore through the top <a title="Bass Beginner" href="http://amzn.com/0793563836" target="_blank">beginner book</a> before grabbing two sequels: <a title="Bass Fitness @ AZ" href="http://amzn.com/0793502489" target="_blank">Bass Fitness</a> for technical expertise and <a title="Jazz Bass Improv @ AZ" href="http://amzn.com/1423477715" target="_blank">Jazz Bass Improvisation</a> to really learn my scales. I did my fair share of improvising when I was playing trombone, but it was always, well, improvisational. I didn&#8217;t know most of the many jazz scales, and even if I could hear the key changes and occasionally play interesting transitions and melodies, it was pretty haphazard. I&#8217;m hoping to do a better job with improv this time around. It would be fun to post some videos in the near future, but unaccompanied bass isn&#8217;t awesome until you&#8217;re really good, and I&#8217;ve got lightyears to go before I get there.</p>
<p>I&#8217;ve developed a nice morning routine that&#8217;s centered around meditation and Lumosity. My meditation practice is guided by <a title="Meditation Book @ AZ" href="http://amzn.com/B001L1RUTQ" target="_blank">this book</a>, which is a great starting point if you&#8217;re interested in meditation but haven&#8217;t taken the plunge. I haven&#8217;t achieved any serious breakthroughs as a result of meditating, but I enjoy the quiet, and based on observations from my travels around the Web, science has many good things to say about a consistent meditation practice.</p>
<p><a title="Lumosity Home" href="http://www.lumosity.com/" target="_blank">Lumosity</a> bills itself as &#8220;the web&#8217;s #1 brain training program,&#8221; and though I haven&#8217;t tried any of their competitors, the games are fun. Here&#8217;s my brain profile after two weeks of play:</p>
<p style="text-align: center;"><a href="http://hhackerman.com/files/lumosity_pic.jpg"><img class="size-medium wp-image-455 aligncenter" title="lumosity_pic" src="http://hhackerman.com/files/lumosity_pic-265x300.jpg" alt="" width="265" height="300" /></a></p>
<p>My SAT (1520: 780 Math and 740 Verbal, with an 800 on the then-separate writing section) and GRE (1500: 800 Math and 700 Verbal) scores were both in the 99th percentile, and a similar performance in Lumosity would be kinda fun. Less likely, though, as Lumosity members are almost surely brainier than your average high schooler. As far as the games go, I liked Word Bubbles Rising and Raindrops from the start, and it was awesome to watch my Penguin Pursuit improve &#8211; for a few days, I just couldn&#8217;t do it, and then *bam*, Level 20 mastery. Rotation Matrix makes me want to cry, but that&#8217;s life. (Lumosity offers a free trial, so you can check these out if you&#8217;re interested!)</p>
<p><strong>20 July 2012 edit:</strong> I&#8217;m keeping a copy of my most up-to-date Lumosity profile <a title="Professional" href="http://hhackerman.com/professional/">here</a>.  After 17 days, I abandoned their suggested daily training sessions and instead started focusing on the games that seemed likely to improve my percentiles the most.  I figure, intelligent game selection should be a part of measuring intelligence, no?</p>
<p>I&#8217;ve also been reading quite a bit. My knowledge of history is abysmal, so I&#8217;m working my way through <a title="History 101 @ AZ" href="http://amzn.com/0061960543" target="_blank">this guy</a> at the moment. (In the first chapter, an ancestor of mine got a shoutout: <a title="Hooker @ WP" href="http://en.wikipedia.org/wiki/Thomas_Hooker" target="_blank">Thomas Hooker</a>, founder of a little colony called Connecticut. Maybe you&#8217;ve heard of it?) <a title="Musashi @ AZ" href="http://amzn.com/4770019572" target="_blank">Musashi</a> is another title that I&#8217;ve been enjoying lately. I wish it was possible to search Amazon for all books with more than 100 reviews and a 5-star rating. In terms of finding great books, it wouldn&#8217;t catch all the classics, but there probably wouldn&#8217;t be many false positives in the results either.  Advanced Search doesn&#8217;t give you that option, though.</p>
<p>And finally, I&#8217;ve been trying to drop some bulky muscle mass in favor of a leaner, more functional physique. Weightlifting has mostly been put on hold in favor of swimming, yoga, and some <a title="MovNat Home" href="http://movnat.com/" target="_blank">MovNat</a>-inspired circuits I&#8217;ve been doing in the yard.  Is it just me, or does the MovNat Thailand workshop sound like the coolest thing in the world?</p>
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		<item>
		<title>Taking A Break</title>
		<link>http://hhackerman.com/2012/06/taking-a-break/</link>
		<comments>http://hhackerman.com/2012/06/taking-a-break/#comments</comments>
		<pubDate>Wed, 06 Jun 2012 15:05:17 +0000</pubDate>
		<dc:creator>Hoxie</dc:creator>
				<category><![CDATA[Life]]></category>
		<category><![CDATA[Cal]]></category>
		<category><![CDATA[health]]></category>
		<category><![CDATA[music]]></category>
		<category><![CDATA[programming]]></category>

		<guid isPermaLink="false">http://hhackerman.com/?p=436</guid>
		<description><![CDATA[Hello, world. There are some important changes happening in my life at the moment, and I thought the ol&#8217; blog would be a decent broadcasting mechanism. What kinds of changes? Sabbatical! I&#8217;m taking a leave of absence from UC Berkeley&#8217;s Statistics PhD program. My second year in the program was rough, due to some health [...]]]></description>
				<content:encoded><![CDATA[<p>Hello, world.</p>
<p>There are some important changes happening in my life at the moment, and I thought the ol&#8217; blog would be a decent broadcasting mechanism. What kinds of changes?</p>
<ul>
<li>Sabbatical! I&#8217;m taking a leave of absence from UC Berkeley&#8217;s Statistics PhD program. My second year in the program was rough, due to some health issues that seem related mostly to grad school stress. I have a standing invitation to return to the program down the road if I so desire. I&#8217;d like to thank the department for being so accomodating as I dealt with the roller coaster ride that is the medical system, and for giving me the opportunity to return. Bin, Jim, La Shana, my professors, colleagues, and friends: you guys rock.</li>
<li>Moving! At the end of May, I moved from Berkeley back to Fort Lauderdale. I&#8217;ll be crashing at the Ackershack for a yet-unknown length of time, probably about a year. This makes me sad, as moving from the Bay Area to almost anywhere else in the US entails a major step down in quality of life. That said, I&#8217;m exceptionally grateful to have a place to rest and recharge. Mom and Dad: you guys rock.</li>
</ul>
<p>The question lately has been, &#8220;If you had a year off, essentially totally unstructured time, what would you do with it?&#8221;</p>
<p>It&#8217;s an interesting thought experiment. &#8220;Travel&#8221; is the answer I heard most frequently from people my age (when I was in Berkeley, and there were actually people my age around), and I&#8217;d love to do some global exploring towards the end of my year. Traveling isn&#8217;t the most restful experience for me, though, and getting healthy is Priority #1 at the moment, so for the time being, I&#8217;m grounded.</p>
<p>A year is a pretty solid chunk of time, and the current plan is to cultivate a nice balance (something that&#8217;s been conspicuously absent from my life for a while now) of activities that I find stimulating and enjoyable. Stuff like&#8230;</p>
<ul>
<li>Music! I haven&#8217;t played music since high school, and I miss it. I&#8217;ve dabbled in guitar over the past few years, but I think it&#8217;s safe that I&#8217;m a bass clef, one-note-at-a-time kind of guy. Hmm&#8230; if only there were a bass clef instrument that we&#8217;ve had lying around the house for years, was less high maintenance than the trombone, and even allowed for the possibility of groupies. I know! I&#8217;ll play the bass guitar! Stay tuned. (Ha. Get it?)</li>
<li>Programming! I took 1.75 programming courses this past semester at Cal and seriously enjoyed them. I&#8217;m going to keep the code ball rolling during my sabbatical.  First, I plan to take Stanford&#8217;s <a title="Algorithms Course" href="https://www.coursera.org/course/algo" target="_blank">Algorithms: Design and Analysis, Part I</a> via <a title="Coursera Home" href="https://www.coursera.org/" target="_blank">Coursera</a>, which starts in about a week. Next will come at least a couple of courses from <a title="Udacity" href="http://www.udacity.com/" target="_blank">Udacity</a>&#8216;s new line up. And finally, with that stuff under my belt, I have a few projects lined up, many of them at the intersection of programming and data analysis, at least one of them with some friends from Berkeley. Much more to follow.</li>
<li>Health! But I don&#8217;t just plan to recover from the problems that plagued me this year and get back to where I was.  No, my definition of health has changed quite a bit this year.  Health isn&#8217;t having a 6-pack.  Health is having the energy and strength to live the life you want to live.  And by that definition, I haven&#8217;t been in very good health for a while.  But moving forward, I&#8217;ll do a much better job getting there, and this year will be a great opportunity to discover and tune lifestyle decisions that make me feel great.</li>
<li>Writing! I enjoy writing, and my sabbatical will give me a chance to practice. Though I&#8217;d like to bang out something more substantial one day, I&#8217;ll content myself for the time being with weekly updates right here. Though I&#8217;m sure that my grandmother will appreciate these, they&#8217;re more to keep me on track and discourage me from being a bum. I don&#8217;t think that&#8217;ll be a major problem, though&#8230; I&#8217;m going to enjoy a lot of what I&#8217;ll be doing this year, thus motivating me to keep doing them. Imagine that.</li>
</ul>
<p>There are more than a few other projects on my list of things to do this year, and I&#8217;ll post about them when I get there.  In the mean time&#8230; an adventure begins.</p>
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		<title>Greetings from Santa Cruz (pic)</title>
		<link>http://hhackerman.com/2010/09/greetings-from-santa-cruz/</link>
		<comments>http://hhackerman.com/2010/09/greetings-from-santa-cruz/#comments</comments>
		<pubDate>Sat, 04 Sep 2010 23:01:28 +0000</pubDate>
		<dc:creator>Hoxie</dc:creator>
				<category><![CDATA[Life]]></category>
		<category><![CDATA[photo]]></category>

		<guid isPermaLink="false">http://hhackerman.com/2010/09/greetings-from-santa-cruz-http/</guid>
		<description><![CDATA[Greetings from Santa Cruz http://twitpic.com/2lb6kf]]></description>
				<content:encoded><![CDATA[<p>Greetings from Santa Cruz <a href="http://twitpic.com/2lb6kf" rel="nofollow">http://twitpic.com/2lb6kf</a></p>
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