Sure. Let me check on possible time. Thanks/
On Wed, Mar 25, 2015 at 5:04 PM, Pranavan Theivendiram < [email protected]> wrote: > Hi Lahiru, > > Shall we have hangout on saturday? > > *T. Pranavan* > *BSc Eng Undergraduate| Department of Computer Science & Engineering > ,University of Moratuwa* > *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* > *Mobile| *0775136836 > > On 25 March 2015 at 10:39, Pranavan Theivendiram < > [email protected]> wrote: > >> Ok Lahiru. >> >> I have noted down some problems in understanding the code base. We will >> have hangout in near future and let us resolve it out. >> >> *T. Pranavan* >> *BSc Eng Undergraduate| Department of Computer Science & Engineering >> ,University of Moratuwa* >> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >> *Mobile| *0775136836 >> >> On 25 March 2015 at 10:36, Lahiru Sandaruwan <[email protected]> wrote: >> >>> Yes, Please arrange a Google hangout if needed. >>> >>> Thanks. >>> >>> On Wed, Mar 25, 2015 at 10:35 AM, Pranavan Theivendiram < >>> [email protected]> wrote: >>> >>>> Thanks Lahiru, >>>> >>>> I will contact you if I need any assistance. >>>> >>>> *T. Pranavan* >>>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>>> ,University of Moratuwa* >>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>> *Mobile| *0775136836 >>>> >>>> On 25 March 2015 at 10:30, Lahiru Sandaruwan <[email protected]> wrote: >>>> >>>>> >>>>> >>>>> On Wed, Mar 25, 2015 at 10:10 AM, Pranavan Theivendiram < >>>>> [email protected]> wrote: >>>>> >>>>>> Hi Lahiru, >>>>>> >>>>>> Thanks for the prompt reply. >>>>>> >>>>>> *+1 for* >>>>>> *we can find the polynomial in each minute, considering 10 minutes of >>>>>> past data, we can change this if required.* >>>>>> >>>>>> If we are getting the health stats events uniformly for every 10 >>>>>> seconds. my question is resolved. (I thought that we are getting in a >>>>>> random manner). >>>>>> >>>>>> Can I add the things in my proposal regarding "Curve Fitting"? >>>>>> >>>>> >>>>> Yes, Please. >>>>> >>>>>> >>>>>> Do you think that any other important things I need to add in my >>>>>> proposal? >>>>>> >>>>> >>>>> It looks good. Hope you referred [1] on this. >>>>> >>>>> Thanks. >>>>> >>>>> [1] http://community.apache.org/gsoc.html#applying-for-gsoc >>>>> >>>>> Thanks. >>>>> >>>>>> >>>>>> *T. Pranavan* >>>>>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>>>>> ,University of Moratuwa* >>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>> *Mobile| *0775136836 >>>>>> >>>>>> On 25 March 2015 at 10:09, Pranavan Theivendiram < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hi Lahiru, >>>>>>> >>>>>>> Thanks for the prompt reply. >>>>>>> >>>>>>> *+1 for* >>>>>>> *we can find the polynomial in each minute, considering 10 minutes >>>>>>> of past data, we can change this if required.* >>>>>>> >>>>>>> If we are getting the health stats events uniformly for every 10 >>>>>>> seconds. my question is resolved. (I thought that we are getting in a >>>>>>> random manner). >>>>>>> >>>>>>> Can I add the things in my proposal regarding "Curve Fitting"? >>>>>>> >>>>>>> Do you think that any other important things I need to add in my >>>>>>> proposal? >>>>>>> >>>>>>> *T. Pranavan* >>>>>>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>>>>>> ,University of Moratuwa* >>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>> *Mobile| *0775136836 >>>>>>> >>>>>>> On 25 March 2015 at 09:59, Lahiru Sandaruwan <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> Hi, >>>>>>>> >>>>>>>> +1 for using Common math library, as we already using it. >>>>>>>> >>>>>>>> - Currently we have calculating numbers per minute, so it is >>>>>>>> not per specified number of events, but for a specified time. >>>>>>>> - IMO we can find the polynomial in each minute, considering 10 >>>>>>>> minutes of past data, we can change this if required. >>>>>>>> - Normally, health stat events are received in each 10 seconds. >>>>>>>> - Therefore we will have 60 ( = 6 * 10) events per 10 minutes. >>>>>>>> >>>>>>>> On Wed, Mar 25, 2015 at 9:11 AM, Pranavan Theivendiram < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Hi Lahiru and Raj, >>>>>>>>> >>>>>>>>> I have gone through the curve fitting materials that you have >>>>>>>>> provided. I have understood the regression part and prediction of >>>>>>>>> degree >>>>>>>>> polynomials. We can use apache common math libraries to do this. I >>>>>>>>> have a >>>>>>>>> question below. >>>>>>>>> >>>>>>>>> How often we are going to find the polynomials? >>>>>>>>> >>>>>>>>> For example, >>>>>>>>> >>>>>>>>> If we have *3 samples* events during *10 minutes interval*, then >>>>>>>>> we can produce a second degree polynomial. (We will get constants >>>>>>>>> *a*,*b*, and *c*). If we are going to use this second degree >>>>>>>>> polynomial for next *60 minutes *(Suppose in this 60 minutes we >>>>>>>>> are getting *200 samples *events). As we can see our *extrapolation >>>>>>>>> <http://en.wikipedia.org/wiki/Extrapolation>* becomes a severe >>>>>>>>> problem in this particular example. >>>>>>>>> >>>>>>>> >>>>>>>> What do you mean by " our *extrapolation >>>>>>>> <http://en.wikipedia.org/wiki/Extrapolation>* becomes a severe >>>>>>>> problem"? Complexity of the calculation of predicted value? >>>>>>>> >>>>>>>> Thanks. >>>>>>>> >>>>>>>>> I do not know how earlier versions handle this scenario. >>>>>>>>> >>>>>>>>> Can you tell that are we going produce new polynomials for *a >>>>>>>>> specified time* or *a specified number of events*? >>>>>>>>> >>>>>>>>> Please clear this issue. >>>>>>>>> >>>>>>>>> *T. Pranavan* >>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>> *Mobile| *0775136836 >>>>>>>>> >>>>>>>>> On 24 March 2015 at 09:02, Lahiru Sandaruwan <[email protected]> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> Thanks Pranavan, >>>>>>>>>> >>>>>>>>>> I'll have a look. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Tue, Mar 24, 2015 at 8:52 AM, Pranavan Theivendiram < >>>>>>>>>> [email protected]> wrote: >>>>>>>>>> >>>>>>>>>>> Hi Lahiru and Raj, >>>>>>>>>>> >>>>>>>>>>> This is my draft proposal which has been done up to 50%. I am >>>>>>>>>>> going to add things about curve fitting as well. Still many things >>>>>>>>>>> need to >>>>>>>>>>> be added. Please comment on my initial draft. >>>>>>>>>>> I am expecting pros and cons regarding my proposal. Please find >>>>>>>>>>> the link for the initial draft below. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> https://docs.google.com/a/cse.mrt.ac.lk/document/d/1TzHYI2o9bIdZWj4qAffNmH5FTgeTOV4TuSsxlISlU8c/edit?usp=sharing >>>>>>>>>>> >>>>>>>>>>> *T. Pranavan* >>>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>>> >>>>>>>>>>> On 22 March 2015 at 23:36, Pranavan Theivendiram < >>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>> >>>>>>>>>>>> Thanks Lahiru for the prompt reply. I have already started >>>>>>>>>>>> working on the proposal. I will send it before tomorrow. >>>>>>>>>>>> >>>>>>>>>>>> *T. Pranavan* >>>>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>>>> >>>>>>>>>>>> On 22 March 2015 at 23:31, Lahiru Sandaruwan <[email protected]> >>>>>>>>>>>> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> Hi, >>>>>>>>>>>>> >>>>>>>>>>>>> Yes, You have found the information correctly and on right >>>>>>>>>>>>> track. It would be great if we can incorporate CEP 4.0.0 changes >>>>>>>>>>>>> as it >>>>>>>>>>>>> would minimize our customized function. >>>>>>>>>>>>> >>>>>>>>>>>>> I would like to suggest you starting the drafting of the >>>>>>>>>>>>> proposal as you have some background now. >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks. >>>>>>>>>>>>> >>>>>>>>>>>>> On Sun, Mar 22, 2015 at 9:48 PM, Pranavan Theivendiram < >>>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>>> Hi all, >>>>>>>>>>>>>> >>>>>>>>>>>>>> With the few days of research on the project "Introducing >>>>>>>>>>>>>> “curve fitting” for statistics prediction algorithm of >>>>>>>>>>>>>> Autoscaler". I have >>>>>>>>>>>>>> found >>>>>>>>>>>>>> followings regarding the project >>>>>>>>>>>>>> >>>>>>>>>>>>>> 1. ClusterMonitor class passes the calculated values from >>>>>>>>>>>>>> the CEP. This value passing happens after >>>>>>>>>>>>>> org.apache.stratos.messaging.event happens. >>>>>>>>>>>>>> 2. RuleTasksDelegator class calculates the prediction >>>>>>>>>>>>>> values using the values(Ex gradient) from the CEP >>>>>>>>>>>>>> 3. The classes in the package >>>>>>>>>>>>>> org.apache.stratos.cep.extension deals with the analysis of >>>>>>>>>>>>>> data in the >>>>>>>>>>>>>> real time and publish the relevant summarized health stats, >>>>>>>>>>>>>> which are >>>>>>>>>>>>>> needed for the autoscaling. >>>>>>>>>>>>>> >>>>>>>>>>>>>> So according to my understanding, I need to modify above >>>>>>>>>>>>>> mentioned classes, in order to implement the curve fitting for >>>>>>>>>>>>>> statistics >>>>>>>>>>>>>> prediction. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Furthermore,for this project, we can use the regression >>>>>>>>>>>>>> implementation of CEP 4.0, which is expected to be released on >>>>>>>>>>>>>> May 15th >>>>>>>>>>>>>> according to WSO2 public jira. I am planning to do a feasibility >>>>>>>>>>>>>> study for >>>>>>>>>>>>>> the first two weeks of the project, where we can explore other >>>>>>>>>>>>>> better >>>>>>>>>>>>>> options as well. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Am I on a right track? Please share your thoughts on this. >>>>>>>>>>>>>> >>>>>>>>>>>>>> [1] https://wso2.org/jira/browse/CEP >>>>>>>>>>>>>> >>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>> >>>>>>>>>>>>>> Regards >>>>>>>>>>>>>> *T. Pranavan* >>>>>>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> -- >>>>>>>>>>>>> Lahiru Sandaruwan >>>>>>>>>>>>> Committer and PMC member, Apache Stratos, >>>>>>>>>>>>> Senior Software Engineer, >>>>>>>>>>>>> WSO2 Inc., http://wso2.com >>>>>>>>>>>>> lean.enterprise.middleware >>>>>>>>>>>>> >>>>>>>>>>>>> phone: +94773325954 >>>>>>>>>>>>> email: [email protected] blog: >>>>>>>>>>>>> http://lahiruwrites.blogspot.com/ >>>>>>>>>>>>> linked-in: >>>>>>>>>>>>> http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> -- >>>>>>>>>> Lahiru Sandaruwan >>>>>>>>>> Committer and PMC member, Apache Stratos, >>>>>>>>>> Senior Software Engineer, >>>>>>>>>> WSO2 Inc., http://wso2.com >>>>>>>>>> lean.enterprise.middleware >>>>>>>>>> >>>>>>>>>> phone: +94773325954 >>>>>>>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>>>>>>> linked-in: >>>>>>>>>> http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> -- >>>>>>>> Lahiru Sandaruwan >>>>>>>> Committer and PMC member, Apache Stratos, >>>>>>>> Senior Software Engineer, >>>>>>>> WSO2 Inc., http://wso2.com >>>>>>>> lean.enterprise.middleware >>>>>>>> >>>>>>>> phone: +94773325954 >>>>>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> -- >>>>> Lahiru Sandaruwan >>>>> Committer and PMC member, Apache Stratos, >>>>> Senior Software Engineer, >>>>> WSO2 Inc., http://wso2.com >>>>> lean.enterprise.middleware >>>>> >>>>> phone: +94773325954 >>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>> >>>>> >>>> >>> >>> >>> -- >>> -- >>> Lahiru Sandaruwan >>> Committer and PMC member, Apache Stratos, >>> Senior Software Engineer, >>> WSO2 Inc., http://wso2.com >>> lean.enterprise.middleware >>> >>> phone: +94773325954 >>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>> >>> >> > -- -- Lahiru Sandaruwan Committer and PMC member, Apache Stratos, Senior Software Engineer, WSO2 Inc., http://wso2.com lean.enterprise.middleware phone: +94773325954 email: [email protected] blog: http://lahiruwrites.blogspot.com/ linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146
