Re: [UrbanSim-Users] ELCM and scalable jobs

From: Mark Kryvobokov <k_mark_at_ukr.net>
Date: Sat, 08 Mar 2008 18:00:52 +0200
('binary' encoding is not supported, stored as-is)

Hana,

Yes, some jobs in the households table have grid_id=0. But there is no such gridcell in the gridcells table. Now it's clear that these jobs are unplaced, and there is no place for them in the existing gridcells.

Thank you again, Hana!

Mark
    
--- Original Message ---
From: Hana Sevcikova <hana_at_cs.washington.edu>
To: Mark Kryvobokov <k_mark_at_ukr.net>, users_at_urbansim.org
Date: 8 march, 04:48:28
Subject: Re: [UrbanSim-Users] ELCM and scalable jobs
    
    Maybe you're refering to the fact that some jobs have grid_id=0 (without
actually having such gridcell in the gridcells table)? In that case it
means that those jobs are unplaced.
    
Hana
    
Hana Sevcikova wrote:
> Mark,
>
> I don't see anything in the log file why there should be a new gridcell.
> In fact, no model of urbansim produces new gridcells. Could you find out
> exactly after which model the gridcell appears?
>
> Thanks,
>
> Hana
>
> Mark Kryvobokov wrote:
>>
>>
>> Thank you Hana,
>>
>> I send my log file for the first simulation year.
>>
>> Mark
>>
>> --- Original Message ---
>> From: Hana Sevcikova <hana_at_cs.washington.edu>
>> To: Mark Kryvobokov <k_mark_at_ukr.net>
>> Date: 4 march, 22:33:30
>> Subject: Re: [UrbanSim-Users] ELCM and scalable jobs
>>
>> Mark,
>>
>> > In our
>> > run_multiprocess.log file, I don't see anything about capacity.
>> Is it
>> > the log file, which you mean?
>>
>> I mean the log files for each year (e.g. year_2010_log.txt). In the
>> ELCM
>> sections you would see how many jobs were not placed. You would see
>> something like
>>
>> Simulate ...
>> Number of unplaced agents: 150 (in 3 iterations)
>>
>> But your case is the one with missing specification for some
>> sub-models.
>>
>> >
>> > Where is a specification of the Scaling Jobs Model? In the
>> > scaling_jobs_model.py, I don't see the description of variables.
>>
>> This model does not have any specification. It distributes jobs
>> according to the current distribution of sectors.
>> (See http://www.urbansim.org/docs/opus-userguide/node217.html)
>> It considers all sectors that appear among the governmental jobs.
>>
>> >
>> > One new question. After the first year simulation, a new gridcell
>> with
>> > grid_id=0 appears. It includes about 13% of households and
>> population.
>> > What is it? It did not exist in the baseyear.
>>
>> I don't know what it is, I haven't heard about such case before.
>> Please
>> send the log file for the first year.
>>
>> > And one more question related to your answers to others: I
>> don't see
>> > your comments in
>> > household_location_choice_model_configuration_creator.py and
>> > filter_for_estimation in
>> land_price_model_configuration_creator.py. I'm
>> > looking at files in
>> >
>> >
>>
>> https://trondheim.cs.washington.edu/svn/opus/tags/4.1.2/urbansim/configurations/household_location_choice_model_configuration_creator.py
>>
>>
>> >
>> >
>> > Or they are in another place?
>>
>> It's at
>>
>> https://trondheim.cs.washington.edu/svn/opus/trunk/urbansim/configurations/...
>>
>>
>>
>> Hana
>>
>> >
>> > --- Original Message ---
>> > From: Hana Sevcikova <hana_at_cs.washington.edu>
>> > To: Mark Kryvobokov <k_mark_at_ukr.net>
>> > Date: 4 march, 01:45:16
>> > Subject: Re: [UrbanSim-Users] ELCM and scalable jobs
>> >
>> > Mark,
>> >
>> > The jobs are separated into industrial, commercial, home-based and
>> > scaling (i.e. governmental) type according to their building
>> type. In
>> > your case:
>> >
>> > 152317 + 152442 + 73647 + 151697 = 530103
>> >
>> > This corresponds to the number of movers that the relocation model
>> > determines.
>> >
>> > Within these four models the jobs are processed in sub-models
>> which are
>> > determined by their sector ids. (The Scaling Job Model does not
>> have
>> > sub-models but is also processed by sectors.)
>> >
>> > The Distribute Unplaced Jobs Model then takes all jobs that are
>> still
>> > unplaced after running those four models and places them
>> according to
>> > the current distribution of jobs by sector.
>> >
>> > If you get 228799 unplaced jobs it can be for two reasons:
>> >
>> > 1. There is not enough capacity (you should be able to find out
>> from
>> > the
>> > log file)
>> >
>> > 2. Your specification does not include all sub-models. For
>> example, if
>> > your specification for commercial ELCM contains sub-models 1,2,
>> and 3,
>> > but there are commercial jobs of sectors 4 and 5, those jobs
>> would not
>> > be considered by any of the ELCMs, neither by the scaling jobs
>> model -
>> > they would be located by the Distribute Unplaced Jobs Model. But
>> they
>> > would be included in the sum of the 'total number of
>> individuals' in
>> > the
>> > commercial ELCM.
>> >
>> > Does it help?
>> >
>> > Hana
>> >
>> > Mark Kryvobokov wrote:
>> > >
>> > >
>> > > Hello!
>> > >
>> > > Our simulation is running without errors. I want to understand
>> some
>> > > points there:
>> > >
>> > > 1. What are 'total number of individuals' in industrial,
>> > commercial and
>> > > home-based ELCM? We have the following total numbers: 152317
>> > industrial,
>> > > 152442 commercial and 73647 home-based. The sum of them all is
>> > 378406,
>> > > which is much lower than the number of movers that equals to
>> > 530103 (the
>> > > result of the Employment Relocation Model). As I understand, we
>> have
>> > > 530103 jobs (new and relocated), which should be moved to
>> > gridcells. The
>> > > 'total number of individuals' in ELCM is not the same?
>> Industrial,
>> > > commercial and home-based jobs are distinguished by
>> > building_type? In
>> > > this case governmental building_type is not considered?
>> > >
>> > > 2. What is 'number of scalable jobs' in the Scaling Jobs Model
>> > and the
>> > > Distribute Unplaced Jobs Model? We have 151697 and 228799
>> > respectively.
>> > > As I understand, jobs are relocated within sectors according to
>> > > distribution of existing jobs in the former model and
>> randomly in
>> > the
>> > > latter model. At the same time I see that the building_type is
>> > used in
>> > > both cases. So, jobs are relocated considering sector_id or
>> > > building_type or both? In our case I again can't find a link
>> > between the
>> > > number of jobs, which should be moved (within sectors or
>> building
>> > > types), and the numbers of scalable jobs.
>> > >
>> > > Mark
>> > >
>> > >
>> > >
>> >
>>
>> ------------------------------------------------------------------------
>>
>> >
>> > >
>> > > _______________________________________________
>> > > Users mailing list
>> > > Users_at_urbansim.org
>> > > http://www.urbansim.org/mailman/listinfo/users
>> >
>>
>
    
  
Received on Sat Mar 08 2008 - 08:00:56 PST

This archive was generated by hypermail 2.2.0 : Sat Mar 08 2008 - 08:00:57 PST