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https://issues.apache.org/jira/browse/MADLIB-1002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Frank McQuillan updated MADLIB-1002:
------------------------------------
Description:
Story
As a data scientist, I want to perform session reconstruction on my data set,
so that I can prepare for input into other algorithms like path functions, or
predictive analytics algorithms.
This is a follow on to
https://issues.apache.org/jira/browse/MADLIB-909
https://issues.apache.org/jira/browse/MADLIB-1001
to add minimum time.
Details
Add min time to the existing params:
{code}
‘output_all_cols = <value>, -- existing param
create_view = <value>, -- existing param
min_time = <value>'
{code}
Parameters
min_time (optional)
FLOAT Minimum delta time that must elapse between events in order for this
session to be considered a real (human) session (default=0). User should
specify in the same units as the time_out parameter. Usage: if an event
happens less than min_time, do not include the event in the current session.
When you look at the next event, compare against the last valid session event,
not against the one you just dropped.
For an example of how min_time could work, see Aster Analytics sessionization
function [1].
References
[4] Aster Analytics users guide, see "sessionize" function
http://www.info.teradata.com/edownload.cfm?itemid=143450001
http://www.info.teradata.com/templates/eSrchResults.cfm?txtpid=&txtrelno=&prodline=all&frmdt=&txtsrchstring=aster%20analytics&srtord=Desc&todt=&rdSort=Date
https://www.youtube.com/watch?v=C760M9ttK9Q
was:
Story
As a data scientist, I want to perform session reconstruction on my data set,
so that I can prepare for input into other algorithms like path functions, or
predictive analytics algorithms.
This is a follow on to
https://issues.apache.org/jira/browse/MADLIB-909
https://issues.apache.org/jira/browse/MADLIB-1001
to add minimum time.
Details
Add min time to the existing params:
params (optional)
TEXT, default: NULL. Parameters for sessionization in a comma-delimited string
of key-value pairs. See the description below for details.
Parameters
Parameters in this section are supplied in the params argument as a string
containing a comma-delimited list of key-value pairs. All of these named
parameters are optional, and their order does not matter. You must use the
format <param_name> = <value> to specify the value of a parameter, otherwise
the parameter is ignored.
{code}
‘output_all_cols = <value>, -- existing param
create_view = <value>, -- existing param
min_time = <value>'
{code}
Parameters
min_time (optional)
FLOAT Minimum delta time that must elapse between events in order for this
session to be considered a real (human) session (default=0). User should
specify in the same units as the time_out parameter. Usage: if an event
happens less than min_time, do not include the event in the current session.
When you look at the next event, compare against the last valid session event,
not against the one you just dropped.
For an example of how min_time could work, see Aster Analytics sessionization
function [1].
References
[4] Aster Analytics users guide, see "sessionize" function
http://www.info.teradata.com/edownload.cfm?itemid=143450001
http://www.info.teradata.com/templates/eSrchResults.cfm?txtpid=&txtrelno=&prodline=all&frmdt=&txtsrchstring=aster%20analytics&srtord=Desc&todt=&rdSort=Date
https://www.youtube.com/watch?v=C760M9ttK9Q
> Sessionization - Phase 3 (minimum time)
> ---------------------------------------
>
> Key: MADLIB-1002
> URL: https://issues.apache.org/jira/browse/MADLIB-1002
> Project: Apache MADlib
> Issue Type: New Feature
> Components: Module: Utilities
> Reporter: Frank McQuillan
> Priority: Minor
> Labels: gsoc2016, starter
> Fix For: v1.9.2
>
>
> Story
> As a data scientist, I want to perform session reconstruction on my data set,
> so that I can prepare for input into other algorithms like path functions, or
> predictive analytics algorithms.
> This is a follow on to
> https://issues.apache.org/jira/browse/MADLIB-909
> https://issues.apache.org/jira/browse/MADLIB-1001
> to add minimum time.
> Details
> Add min time to the existing params:
> {code}
> ‘output_all_cols = <value>, -- existing param
> create_view = <value>, -- existing param
> min_time = <value>'
> {code}
> Parameters
> min_time (optional)
> FLOAT Minimum delta time that must elapse between events in order for this
> session to be considered a real (human) session (default=0). User should
> specify in the same units as the time_out parameter. Usage: if an event
> happens less than min_time, do not include the event in the current session.
> When you look at the next event, compare against the last valid session
> event, not against the one you just dropped.
> For an example of how min_time could work, see Aster Analytics sessionization
> function [1].
> References
> [4] Aster Analytics users guide, see "sessionize" function
> http://www.info.teradata.com/edownload.cfm?itemid=143450001
> http://www.info.teradata.com/templates/eSrchResults.cfm?txtpid=&txtrelno=&prodline=all&frmdt=&txtsrchstring=aster%20analytics&srtord=Desc&todt=&rdSort=Date
> https://www.youtube.com/watch?v=C760M9ttK9Q
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