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<title>Haaze.com / wanriare5572 / All</title>
<link>http://www.haaze.com</link>
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<pubDate>Mon, 14 Feb 2011 08:10:54 +0000</pubDate>
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<title><![CDATA[PowerTrekk charges phone with water, hydrogen]]></title>
<link>http://www.haaze.com/story.php?title=powertrekk-charges-phone-with-water-hydrogen</link>
<comments>http://www.haaze.com/story.php?title=powertrekk-charges-phone-with-water-hydrogen</comments>
<pubDate>Mon, 14 Feb 2011 08:10:54 +0000</pubDate>
<dc:creator>wanriare5572</dc:creator>
<category>Eco</category>
<guid>http://www.haaze.com/story.php?title=powertrekk-charges-phone-with-water-hydrogen</guid>
<description><![CDATA[(Credit:PowerTrekk)With the increasing number of tech gadgets we carry around, even on hiking trips, having a reliable power source is a serious consideration. While solar-powered battery packs have been around for a while, the reliance on a consistent sunlight source is a big concern in some regions. The pocket-size PowerTrekk Fuel Cell charger out of Sweden offers two solutions to the personal energy crisis. Besides an internal battery pack that can be charged from the mains, the device also utilizes disposable fuel cell packs. The device splits water to create hydrogen that goes through the fuel cell to create an electric current, which can be used to either power up USB-connected devices or charge the internal battery pack.The PowerTrekk is being demonstrated at the Mobile World Congress in Barcelona, Spain. While it's one of the first hydrogen fuel packs for phones and mobile devices to hit the market, others, like Horizon's HydroFill, operate on a similar principle.  Details on pricing and availability for the PowerTrekk are not provided at this time, as the company is still sourcing for distributors. In the meantime, see how the PowerTrekk works in the video below. Untitled from PowerTrekk on Vimeo.(Source: Crave Asia) <br/><br/>0 Vote(s) ]]></description>
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<title><![CDATA[Social media popularity can predict stock prices]]></title>
<link>http://www.haaze.com/story.php?title=social-media-popularity-can-predict-stock-prices</link>
<comments>http://www.haaze.com/story.php?title=social-media-popularity-can-predict-stock-prices</comments>
<pubDate>Mon, 30 Nov -001 00:00:00 +0000</pubDate>
<dc:creator>wanriare5572</dc:creator>
<category>Latest News</category>
<guid>http://www.haaze.com/story.php?title=social-media-popularity-can-predict-stock-prices</guid>
<description><![CDATA[A new study conducted by a doctoral student at Pace University, in association with Famecount (which tracks how popular brands are according to social media) concludes that social media popularity can reliably predict daily stock prices.The study tracked three brands, Starbucks, Coca Cola and Nike,over the course of 10 months in 2010-2011. The number of Facebook fans, Twitter followers and Youtube views were used as measures of each brand&amp;'s social media popularity. This data was tracked against daily stock price movements for each of these companies, relative to an index of consumer stocks (which reflects how well the stock market is doing in general) and keyword search trend data (the number of searches for &amp;''Starbucks&amp;'' reflects general public interest in the brand and should show spikes due to major announcements).Although the fortunes of the three brands varied considerably over the course of the study, e.g. Starbuck&amp;'s stock price climbed 24 percent while Coke&amp;'s declined by 6 percent, a correlation was found between daily popularity and stock price, even when a 10- or a 30-day lag was introduced into the study, suggesting that social media popularity may be a lead indicator of stock price performance.This study only looked at a very small number of brands and the indices used to track stock market performance, and public interest might not be sufficient toseparatethe influence of social media popularity from other factors. However, traders are increasingly taking techniques like sentiment analysis (another measure of a brand&amp;'s standing with consumers and media) seriously.Reuters&amp;' trading dashboard uses text and sentiment analysis from Lexanalytics to track news on 20,000 stocks and commodities. Text analysis determines the meaning of a block of text, while sentiment analysis determines the mood or tone of the text and how positive or negative it is, e.g. a very positive review of a new product.This data is now being used as actionable input for algorithmic trading, automated trading software that accounts for up to 50 percent of trades in the U.S.I recently talked to Rochester Cahan, Vice President of Global Equity Quantitative Strategy at Deutsche Bank about the usage of text and sentiment analysis in trading. His team advises fund managers on trading strategy and has been experimenting with the Reuters service. According to Cahan, the amount of relevant data available on a stock is becoming impossibly largefor a human trader to process. To be used by a trading system, the massive amounts of unstructured text containing information relevant to a stock need to be summarized into a simple number (or numbers). This is where text and sentiment analysis scoring come in.Multiple news sources areanalyzed for particular words, tone, relevance and freshness, e.g. the latest news reporting that Apple will not support NFC in the iPhone 5. If there is astatistical relationship between a stock price rise and similar news in the past, then the trading system will buy.Cahan told me thathe has seen significant improvements in trading performance when the text and sentiment scores are used as trading inputs. In addition, the scores were uncorrelated with existing trading signals, i.e. they provide new information to the trading system.The most positive sentiment levels are not necessarily the most useful for trading. When, let&amp;'s say, Apple announces the iPad to almost universal media euphoria, the stock price reacts very quickly so it&amp;'s difficult to take advantage of the information. However, stocks with moderate positive sentiments tend to be overlooked by the market and make good buys.Next Story: Zong expands its mobile payments to game consoles and tablets Previous Story: Ask the accountant: What taxes will I owe on restricted stockPrintEmailTwitterFacebookGoogle BuzzLinkedIn      DiggStumbleUponRedditDeliciousGoogleMore&amp;8230'          Tags: sentiment analysis, Social Media, stock market, tradingCompanies: Coca-Cola, Deutsche Bank, Famecount, lexanalytics, Nike, Reuters, Starbucks          Tags: sentiment analysis, Social Media, stock market, tradingCompanies: Coca-Cola, Deutsche Bank, Famecount, lexanalytics, Nike, Reuters, StarbucksCiara Byrne is a full time techie and part-time writer. She has worked as a software developer, team lead, engineering manager and mobile standards expert. Ciara is based in Amsterdam and her interests include creative companies, useful technology, torture by piano and cycling in high heels. Follow her on Twitter at @deciara.  Have news to share Launching a startup Email: tips@venturebeat.comVentureBeat has new weekly email newsletters.  Stay on top of the news, and don't miss a beat.<br/><br/>0 Vote(s) ]]></description>
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