General Mathematics - AnalyticBridge2019-09-16T16:57:19Zhttps://www.analyticbridge.datasciencecentral.com/forum/categories/general-mathematics/listForCategory?feed=yes&xn_auth=noRegularizationtag:www.analyticbridge.datasciencecentral.com,2013-09-27:2004291:Topic:2753262013-09-27T06:34:01.390ZHenryhttps://www.analyticbridge.datasciencecentral.com/profile/Henry249
<p><span>Why does the regularization term prevent overfitting? Is there any statistical interpretation for the regularization term?</span></p>
<p><span>Why does the regularization term prevent overfitting? Is there any statistical interpretation for the regularization term?</span></p> Further Education for Marketing Analyst / Predictive Modelingtag:www.analyticbridge.datasciencecentral.com,2013-07-19:2004291:Topic:2570352013-07-19T15:30:40.619ZBrittanyhttps://www.analyticbridge.datasciencecentral.com/profile/Brittany
<p>I am currently a digital marketing analyst, and I have a bachelor's degree in psychology. I am looking to further my education and advance my predictive modeling skills, and I am looking for program recommendations.</p>
<p>I am currently considering a masters in Predictive Analytics at Northwestern University (online program) or a Masters in Applied Mathematics at Johns Hopkins University (on-campus). I am leaning towards Northwestern because it seems more focused on business, and it is…</p>
<p>I am currently a digital marketing analyst, and I have a bachelor's degree in psychology. I am looking to further my education and advance my predictive modeling skills, and I am looking for program recommendations.</p>
<p>I am currently considering a masters in Predictive Analytics at Northwestern University (online program) or a Masters in Applied Mathematics at Johns Hopkins University (on-campus). I am leaning towards Northwestern because it seems more focused on business, and it is online which is convenient, but I'm not sure how this degree will be received by the Marketing industry. It is an online degree which still carries stigma and is not nearly as prestigious as a masters from Hopkins.</p>
<p></p>
<p>What are your thoughts? Would you recommend one of these or another program?</p>
<p></p>
<p></p>
<p></p> Topological Approach to Data Miningtag:www.analyticbridge.datasciencecentral.com,2012-07-25:2004291:Topic:2040532012-07-25T19:08:35.162ZPeter Chenhttps://www.analyticbridge.datasciencecentral.com/profile/PeterChen352
<p>I am NOT an academic nor a graduate tudent somewhere. However, I read books on Topology out of personal interest. Does anyone here have any interesting links or white papers on using mathematical topological (metric space, etc.) approaches to data mining. After wtaching some PBS series on mathematics, I am also interested in looking at Euler's formulas for data mining as well.</p>
<p> </p>
<p>I am NOT an academic nor a graduate tudent somewhere. However, I read books on Topology out of personal interest. Does anyone here have any interesting links or white papers on using mathematical topological (metric space, etc.) approaches to data mining. After wtaching some PBS series on mathematics, I am also interested in looking at Euler's formulas for data mining as well.</p>
<p> </p> Economic Forces and the stock markettag:www.analyticbridge.datasciencecentral.com,2011-11-04:2004291:Topic:1604402011-11-04T11:27:16.264ZTomhttps://www.analyticbridge.datasciencecentral.com/profile/Sam10
<p>Dear all,</p>
<p> </p>
<p>I have a stupid question and I hope that you can explain to me in a simple terminology. I have attached an article and on page 13/22 of the adope file and says the following:</p>
<p><em>The time series of those five factors were then each regressed on the state variables. An economic variable is significantly related to stock movements if and only if it is significantly related to at least one of the five common stock factors. The null hypothesis for each is the…</em></p>
<p>Dear all,</p>
<p> </p>
<p>I have a stupid question and I hope that you can explain to me in a simple terminology. I have attached an article and on page 13/22 of the adope file and says the following:</p>
<p><em>The time series of those five factors were then each regressed on the state variables. An economic variable is significantly related to stock movements if and only if it is significantly related to at least one of the five common stock factors. The null hypothesis for each is the restriction across the equations that the five regression coefficients for that variable( one to each of the factor regressions) are jointly zero. The null hypothesis was rejected for the production growth, the term structure, and the risk premium variables.</em></p>
<p> </p>
<p>I know that they performed factor analysis to find five significant factors, but when choosing the macro-economic variables, they did the above mentioned statment.</p>
<p> </p>
<p>Could anyone of you explain to me in common terms..</p>
<p> </p>
<p>Sincerly hoping for an answer...</p> what is a better way to spare parts forecastingtag:www.analyticbridge.datasciencecentral.com,2011-01-25:2004291:Topic:868322011-01-25T15:14:24.861ZYi-Chun Tsaihttps://www.analyticbridge.datasciencecentral.com/profile/YiChunTsai
<p>Hi, all:</p>
<p>Spare parts forecasting poses a big challenge to all forecasters who are in charge of producing a good enough forecast. The reason is that the demand is irregular and a big proportion of the demand data is zero. The traditional ARIMA approaches don't work well here. Could you suggest other approaches, based on your experience or research, to this kind of demand forecast? Thanks.</p>
<p>Hi, all:</p>
<p>Spare parts forecasting poses a big challenge to all forecasters who are in charge of producing a good enough forecast. The reason is that the demand is irregular and a big proportion of the demand data is zero. The traditional ARIMA approaches don't work well here. Could you suggest other approaches, based on your experience or research, to this kind of demand forecast? Thanks.</p> Good Book for Statistical Perspective of data miningtag:www.analyticbridge.datasciencecentral.com,2010-10-26:2004291:Topic:812692010-10-26T17:07:26.944ZVenkatesh Umaashankarhttps://www.analyticbridge.datasciencecentral.com/profile/VenkateshUmaashankar
Hi,<br></br> Could anybody suggest a good, easy to understand book for learning the statistical concepts used in data mining ?? ( Logistic Regression, Bayesian networks, MLE, Hypothesis testing, etc...). I am interested in learning these concepts with some examples on real time cases or atleast well framed examples. All the books that i picked up so far discuss only theory and its tough for me to get a hold or expertise on these areas. I would highly appreciate anyhelp regarding this.. Thanks in…
Hi,<br/> Could anybody suggest a good, easy to understand book for learning the statistical concepts used in data mining ?? ( Logistic Regression, Bayesian networks, MLE, Hypothesis testing, etc...). I am interested in learning these concepts with some examples on real time cases or atleast well framed examples. All the books that i picked up so far discuss only theory and its tough for me to get a hold or expertise on these areas. I would highly appreciate anyhelp regarding this.. Thanks in advace.<br/><br/>BR<br/>Venki<br/> Hypothesis testtag:www.analyticbridge.datasciencecentral.com,2010-07-13:2004291:Topic:738352010-07-13T05:57:46.745ZMark Otiendehttps://www.analyticbridge.datasciencecentral.com/profile/MarkOtiende
I have two population means and i am facing a problem.<br/>1. I have alot of missing values.what amount of missing values can we work with. Is there a limit of missing values that i should nt exceed?<br/><br/>
I have two population means and i am facing a problem.<br/>1. I have alot of missing values.what amount of missing values can we work with. Is there a limit of missing values that i should nt exceed?<br/><br/> Basic research in statisticstag:www.analyticbridge.datasciencecentral.com,2010-05-01:2004291:Topic:679062010-05-01T16:26:46.694Zparag kulkarnihttps://www.analyticbridge.datasciencecentral.com/profile/paragkulkarni
Hey all,<br/><br/>With continued applications of statistics in different fields , I am interested to know whether really there is any basic research in statistics is carried on now a days ? If yes, then in which direction this research is going? thanks.<br/><br/>regards<br/>parag<br/><div id="refHTML"></div>
Hey all,<br/><br/>With continued applications of statistics in different fields , I am interested to know whether really there is any basic research in statistics is carried on now a days ? If yes, then in which direction this research is going? thanks.<br/><br/>regards<br/>parag<br/><div id="refHTML"></div> Multimodal distributiontag:www.analyticbridge.datasciencecentral.com,2010-03-07:2004291:Topic:624162010-03-07T10:45:45.792Zparag kulkarnihttps://www.analyticbridge.datasciencecentral.com/profile/paragkulkarni
Dear all,<br/><br/> I am interested to know about normalizing data having multimodal distribution.Can any one help in this regards? Thanks in advance.<br/><br/>Regards<br/>Parag Kulkarni<br/><div id="refHTML"></div>
Dear all,<br/><br/> I am interested to know about normalizing data having multimodal distribution.Can any one help in this regards? Thanks in advance.<br/><br/>Regards<br/>Parag Kulkarni<br/><div id="refHTML"></div> Problem for New Statisticianstag:www.analyticbridge.datasciencecentral.com,2010-03-02:2004291:Topic:619672010-03-02T01:07:31.060ZRudrahttps://www.analyticbridge.datasciencecentral.com/profile/Sheel
<div>you are in the first leg of ur career and u has found you as a consultant trainee job. You are given a first assignment which deals with one of the clients having a chain coffee business. There is good consumer traffic for all their chain shops, especially during evening hours .however the client feels that the customers generally spent more idle time in the shop making it inconvenient for the others. Hence the client is requesting to see how the problem could be resolved so that the…</div>
<div>you are in the first leg of ur career and u has found you as a consultant trainee job. You are given a first assignment which deals with one of the clients having a chain coffee business. There is good consumer traffic for all their chain shops, especially during evening hours .however the client feels that the customers generally spent more idle time in the shop making it inconvenient for the others. Hence the client is requesting to see how the problem could be resolved so that the customers are put to minimum difficulty/.</div>
<div>You are asked by your leader to organize a sample survey to record three variables i.e. bill amount paid by consumers (bill) time spent by each customer in shop (spite) and time for service (slime) you are asked to present a reporter on the following</div>
<div>1. Wat is the probability of a customer cancelling an order</div>
<div>2.no.of customers spending more than the average time spend by consumers</div>
<div>3.no.of .customers whose bill is below the average amount paid by consumers</div>
<div>4.type of data distribution of three variables and the consequent information contained in them</div>
<div>5.the summary statistics mean, median, and SD along with a discussion of the data features using them</div>
<div>6.in case the service time is more than the customer waiting time it means than the customer has left after cancelling his/her order due to some emergency</div>
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<div>This is a problem I found on ORKUT. So, all credit to the original framer of the question.</div>