-
- Expenses
- Sent Expenses Receipts and claim for the ABMofCSS Workshop to Mike Batty
- Emailed Kenny Baird to ask about claiming my trainfare for the NCeSS Showcase
- SoG
- Adewale
- Impromtu meeting about Raod Accident Research
- He has got some accident information on areas of concern from Leeds City Council (LCC) website
- These identify junctions in the Leeds areas with 4 or more accidents involving people Killed or Seriously Injured (KSI) in the current year or 15 or more in the last 5 years.
- These can be readily identify from the Stats19 road accident data.
- What we really need are the locations of remedial treatments and the dates of when and where these were put in place.
- We used Google Maps to identify one of the junctions of concern and used the tool to create point line and polygon regions, export the data as KML and considered how to get the data into ArcGIS.
- Adewale will go away and try to find data on the remedial treatments on the LCC website.
- Cruicial will be the date of remedial treatment so that we can examine accident frequencies and severities around these times.
- Adewale will try to contact LCC representatives to provide a proposal and see if they have done any data preparation he can build on.
- Good Brainstorm :)
- CSAP
- Emailed Kirk Harland to find out more about the Flexible Modelling Framework he has developed and was mentioned on Friday.
- Microsimulation modelling publication based on the CSAP Seminar MicroSimulation : Problems and Solutions
- Contacted by Karyn to ask if interested in contributing to a review paper journal, speaking (individually) about our experiences with Microsimulation modelling - advantages, disadvantages, etc...
- I'm interested in making a contribution to a collective practice type paper based on the work I presented. However, based on an hours worth of investigation, I don't think I'd be able to add much to a review type paper.
- I'm interested in making a contribution to a collective practice type paper based on the work I presented. However, based on an hours worth of investigation, I don't think I'd be able to add much to a review type paper.
- Here are some words and pointers based on my investigations and some further thoughts:
- In a review, there would be an issue of defining what is meant by MSM. In trying to work out what it stands for, I looked up definitions of the components of the term; "Micro" (http://en.wikipedia.org/wiki/Micro), "Simulation" (http://en.wikipedia.org/wiki/Simulation) and "Modelling" (http://en.wikipedia.org/wiki/Modelling). "Microsimulation" is also defined (http://en.wikipedia.org/wiki/Microsimulation), but there is no mention of geography there... perhaps there should be...
- I quite liked this definition:
- Microsimulation models are computer models that operate at the level of the individual behavioural entity, such as a person, family, or firm. Such models simulate large representative populations of these low-level entities in order to draw conclusions that apply to higher levels of aggregation such as an entire country. This type of model is distinct from aggregate models whose explanatory variables already represent collective properties (http://www.statcan.ca/english/spsd/).
- So, then what is the difference between Agent Based Models (ABM), Individual Based Models (IBM) and MSM? I'm thinking there isn't one... I thought there could be distinction that Agents don't need to be Individuals, and that a Micro model is something that contains in the order of a million individual behavioural entities or low level agents. Anyway, I don't think these distinctions are commmonly used.
- The modelling and simulation of processes at higher resolutions for larger regions will be a research challenge. Resolution and scale are fundamental aspects of the geographic space, time and attribute domain.
- What about contribution or collaboration from Martin, Dimitris and Alison?
- What about discussing this at a MASS group meeting?
- Browsing
- MoSeS
- Meeting tomorrow cancelled!
- Progress of UK run
- Paper Submitted for AHM 2007 by Paul based on some feedback from the others :)
-
- Andy Evans emailed with a link to a paper I am listed as an author on:
- Environmental change in moorland landscapes
- A full reference to this is:
- Holden, J., Shotbolt, L., Bonn, A., Burt, T.P., Chapman, P.J., Dougill, A.J., Fraser, E.D.G., Hubacek, K., Irvine, B., Kirkby, M.J., Reed, M.S., Prell, C., Stagl, S., Stringer, L.C., Turner, A.G.D., Worrall, F. Environmental change in moorland landscapes. Earth-Science Reviews, Volume 82, Issues 1-2, May 2007, Pages 75-100. (http://www.sciencedirect.com/science/article/B6V62-4N0X5TH-1/2/8571592dc70189ad6d71824eb52ac2a9). doi:10.1016/j.earscirev.2007.01.003
- OGC Grid Collision GeoLinking IE
- Provided Nail Cunningham (Master Student) doing a project looking at accessibility to health services in Bradford with GBRoads.zip as described at:
- CSAP Seminar on MicroSimulation : Problems and Solutions
-
- Browsing
- Subscribed to the OSGeo Discuss list: discuss@lists.osgeo.org
- OGC Grid Collision GeoLinking IE
- Investigating existence, availability and appropriateness of FOSS software for GML to Raster conversion using streams (for OGSA-DAI):
- Paul dropped by :)
- He has done good things producing a GLS client that can be demonstrated to work.
- The service URL currently being used to test is:
- http://morillo.cps.unizar.es:8082/gls-server/service
- For the GLS client Paul has made yhe test is done with the following:
- http://morillo.cps.unizar.es:8082/gls-server/
- By pressing the right buttons, we can get a map of Spain showing some regions and some numbers, presumably human population count.
- AHM Paper won't be ready today for me to review. Paul will just write it and submit it and that should be fine.
- We are both on for the GeoLinking IE telecon tomorrow.
- Sog
- RBPAM Seminar: Forecasting Water Demand in the UK up to 2031
- Patrick Sim and John Parsons
- The WaND project has involved forecasting UK water demand up to the year 2031 for various scenarios. This talk discusses the results of this research throwing light on the various aspects of demographic forecasting, DCM surveys, microcomponents and scenario development.
- Preparation for CSAP Seminar on MicroSimulation : Problems and Solutions
- Created Andy Turner's CSAP Seminar on MicroSimulation : Problems and Solutions Web Page
- The Preparation Section based on my notes from 2007-04-24. Added a list of optimisation variables as below and provided some detail of the current optimisation function.
- Optimisation Constraint Variables:
- Health:
- PeopleWhoseGeneralHealthWasGood
- PeopleWhoseGeneralHealthWasFairlyGood
- PeopleWhoseGeneralHealthWasNotGood
- PeopleWithLimitingLongTermIllness
- Household Composition:
- LoneParentHouseholdsWithChildren
- OneFamilyAndNoChildren
- MarriedOrCohabitingCoupleWithChildren
- Female:
- Age:
- FemalesAge0to4
- FemalesAge5to9
- FemalesAge10to14
- FemalesAge15to19
- FemalesAge20to24
- FemalesAge25to29
- FemalesAge30to34
- FemalesAge35to39
- FemalesAge40to44
- FemalesAge45to49
- FemalesAge50to54
- FemalesAge55to59
- FemalesAge60to64
- FemalesAge65to69
- FemalesAge70to74
- FemalesAge75to79
- FemalesAge80AndOver
- Marriage Age:
- FemalesMarriedAge0to15
- FemalesMarriedAge16to19
- FemalesMarriedAge20to24
- FemalesMarriedAge25to29
- FemalesMarriedAge30to34
- FemalesMarriedAge35to39
- FemalesMarriedAge40to44
- FemalesMarriedAge45to49
- FemalesMarriedAge50to54
- FemalesMarriedAge55to59
- FemalesMarriedAge60to64
- FemalesMarriedAge65to74
- FemalesMarriedAge75to79
- FemalesMarriedAge80AndOver
- Economic Activity:
- FemalesAge16to24Unemployed
- FemalesAge16to74
- FemalesAge16to74EconomicallyActiveEmployed
- FemalesAge16to74EconomicallyActiveUnemployed
- FemalesAge16to74EconomicallyInactive
- FemalesAge50AndOverUnemployed
- Male:
- Age:
- MalesAge0to4
- MalesAge5to9
- MalesAge10to14
- MalesAge15to19
- MalesAge20to24
- MalesAge25to29
- MalesAge30to34
- MalesAge35to39
- MalesAge40to44
- MalesAge45to49
- MalesAge50to54
- MalesAge55to59
- MalesAge55to59
- MalesAge55to59
- MalesAge60to64
- MalesAge65to69
- MalesAge70to74
- MalesAge75to79
- MalesAge80AndOver
- Marriage Age:
- MalesMarriedAge0to15
- MalesMarriedAge16to19
- MalesMarriedAge20to24
- MalesMarriedAge25to29
- MalesMarriedAge30to34
- MalesMarriedAge35to39
- MalesMarriedAge40to44
- MalesMarriedAge45to49
- MalesMarriedAge50to54
- MalesMarriedAge55to59
- MalesMarriedAge60to64
- MalesMarriedAge65to74
- MalesMarriedAge75to79
- MalesMarriedAge80AndOver
- Economic Activity:
- MalesAge16to24Unemployed
- MalesAge16to74
- MalesAge16to74EconomicallyActiveEmployed
- MalesAge16to74EconomicallyActiveUnemployed
- MalesAge16to74EconomicallyInactive
- MalesAge50AndOverUnemployed
-
-
- Preparation for seminar on MicroSimulation : Problems and Solutions
- Individual and Household Level Estimates Based on 2001 UK Human Population Census Data
- Task:
- Generate an individual and household level dataset for the UK in 2001 based on 2001 UK Human Census Population Data
- Approach:
- Select from the Sample of Annonymised Records (SAR) sets of records that's aggregate characteristics match those for the census aggregate statistics.
- Heuristic search based on a Genetic Algorithm (GA).
- Control Constrain (CC) and Optimisation Constrain (OC)
- CC are measures that *have to* be met in solutions.
- OC are measures that are fitted to.
- A story of development:
- July 2005.
- Readers and formatters of a selected set of Census Aggregate Statistics (CAS) data were developed.
- Reader and formatter of the Individual SAR (ISAR) was developed.
- GA developed with CC of total population.
- Output generated for Leeds based on Output Area CAS.
- Code parallelised and output generated for UK.
- Feb 2006.
- Output attempted to be used as input into Belinda's dynamic simulation.
- Problem: ISAR records could not easily be formed into households
- Belinda had developed a Household Formation Routine (HFR) and this was in most cases it could not assign all ISAR records into Households.
- Solution:
- Use Belinda's HFR to encourage solutions where ISAR records could be formed into Households.
- New output generated for Leeds and UK.
- April 2006.
- Concerns over the assumptions in the HFR and the availability of a Household SAR (HSAR) a new solution was proposed:
- Select from the HSAR the Household Population (HP) and the ISAR for the Communal Establishment Population (CEP)
- In theory this is OK,
- Although the HSAR is only available for England and Wales.
- The HSAR also has some stricter data licence conditions due to confidentiality on disclosure concerns.
- But in practice this has taken longer than hoped.
- New strategy was:
- CC the CEP using CAS001 and CC the HP using CAS003.
- OC based on variables from a set of tables
- Strategy to CC by age is considerably more difficult than simply CC by HP and CEP totals:
- Census data have age variables aggregated in one of a number of different ways, for instance:
- In the ISAR the age variable AGE0 has values 0-15 as single years of age, 16-19, 20-24, 25-29, 30-44, 45-59, 60-64, 65-69, 70-74, and 75-79 as single years of age.
- In the HSAR the age variable AGEH has values 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80.
- In CAS001 age is grouped as 0-24 as single years of age, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90+.
- In CAS003 age is grouped as 0-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90+.
- To CC on HP age is very hard!
- HP CC is on the Household Reference Person (HRP) only:
- For this CAS003 age is grouped as 0-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+.
- For CEP CC based on CAS001 age is grouped as 0-15 as single years of age, 16-19, 20-24, 25-29, 30-44, 45-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85-89, 90+.
- GA:
- An initial set of solutions is generated.
- Solutions are bred:
- This is done by mutatation involving swapping a random number of HSAR and ISAR ensuring CC are met:
- CC are met by ensuring any record swapped in has has age in the relevant age group of CC.
- Each solution is measured for a goodness of fit.
- The best fitting solutions are kept.
- Steps 1 to 5 are repeated until convergence or until a fixed number of iterations are completed.
- For the last 6 months the results have been scruitinized and code revisited to identify various bugs and logic errors.
- In the main this is because the results were not as good as expected and did not compare favourably to those from an Iterative Proportional Sampling (IPS) developed by Mark Birkin.
- Our intuition is that a GA would be much better than IPS and it remains a challenge to show this.
- Hopefully the results generated this week do this...
- Current Stage
- For the last 6 months the results have been scruitinized and code revisited identifying various bugs and logic errors.
- Results have not yet passed expert approval.
- They are not as good as expected and do not compare favourably to those from an Iterative Proportional Sampling (IPS) developed by Mark Birkin.
- Intuitively the GA should be much better than IPS and it remains a challenge to show this.
- Hopefully the results generated this week do this...
- Next Steps
- Produce and analyse Geographical Maps of the Errors
- Run Belinda's dynamic model based on these synthetic data:
- This will either work or we will identify further issues and problems.
- Enrich the ISAR and HSAR records by incorporating variables from the BHPS and other Survey and Health Databases.
- Mark has some Masters students looking into this.
- Develop a publication comparing the IPS and GA method and results.
- Reproduce ISAR only results which can be used more readily by others.
- Tidy and fully document the code.
- The code is written in Java and is open source.
- Browsing
- BBC2 Horizon on Fire Grid
- Interesting program for the trust people and organisations put in models.
- Buildings can be designed better to cope with fire.
- The decision still rests on the firebrigade and emergency services as to how to tackle an incident, but they have better information.
- A road traffic collision avoidance system needs similar infrastructure improvement, and sensor technology, but the problem there is that the human driver may not have time to react and how does a computer make the decision that it is worth sacrificing the safety of one vehicle for the safety of others?
- Junaid popped by to discuss GEOG5060 and MoSeS work.
- We had a short meeting exploring ideas:
- GEOG5060
- Junaid wants to do something with Web Services and combine Assignment 3 with the module project and will discuss his ideas with Steve Carver.
- MoSeS
- In terms of data security Junaid has idenitified 3 issues:
- confidentiality
- disclosure control
- integrity
- MoSeS
- MoSeS population initialisation on BeoWulf
- Eeek! yesterday I deleted my mpjrun scripts in copying the data and code...
- Set a run going 500 optimisation iterations 28 processors.
- Now control constraints are sorted the next thing will be to work on the optimisation constraints and associated fitness function.
-
- Browsing
- MoSeS, OGC Grid Collision, GeoLinkingIE, NCeSS e-Infrastructure
- NCeSS e-Infrastructure
- Paul dropped by :-)
- Requiring documentation to help in writing AHM paper.
- We are annoyed and don't know what to do about not having the Google Map Creator Source Code :-(
- Reported that the GLS client is working :-)
- MoSeS refactoring and checking constraints
- I seem to have fixed the problem with the control constraints...
- Time to try to run the code in parallel on the beowulf again...
- Copy the data and code across... done.
- Initialise data... done.
-
- GEOG5060
- Some problems running latest version of Geomorphometrics practical code. The reorganisation of the N:\ caused the main problem.
- Browsing
- MoSeS, OGC Grid Collision, GeoLinkingIE, NCeSS e-Infrastructure
- Updated Andy Turner's NCeSS e-Infrastructure for the Social Sciences Project Web Page
- GeoLinking telecon
- Provided feedback to Mike Daw about the use of the Access Grid Node Facility here in Geography.
- MoSeS Code Refactoring and data reprocessing
- Finally worked out what was wrong with my code:
- There was a switch statement in which I was not breaking out of cases... Very nasty!
- Anyway, I can now demonstrate that all constraints are initially being met for Leeds Output Areas:
- Now I need to ensure these constraints are still met after optimising...
- Communications from Paul :)
- Google Map Creator Source Code
- Prooving difficult to get!
- MoSeS publication
- Progress with GLS client
- References
- Requested Mike Crabtree to open up the firewall on geo-s12 so that we can query a URL and get a response back over HTTP
- Mike is looking into this :)
- Browsing
- Meeting with Adewale Awojide a GEOG5080 student planning some work (40% of a 15 credits) on Road Traffic Accidents and Road Safety in Leeds
- Browsing
- Agent Based Modelling of Complex Spatial Systems
- Email from Robin Smith asking if I got any feedback from the SUPER survey :)
- Apparently my Blog entry was the first link when he did a google search.
-
- Robin is trying to find something about 'draft priorities' but has found all links to be dead.
- My reply:
- Agent Based Modelling of Complex Spatial Systems
- MoSeS
- Talked to Richard Milton about the source for Google Map Creator
- I tried to explained what we wanted it for.
- His advice was to spend a day writing the code from scratch. It might be time to give up trying to get the Google Map Creator source code...
- EGC
- Browsing
- Events
- GEOG5060
- Bethan asked for feedback on her groups work on the assignemnt
- The group of 10 split into 4 subgroups to produce:
- A hand-out for the lecture giving more detail on the cell neighbourhoods and the rotation invariant metrics: Geomorphometrics – a handy guide.
- A new set of lecture slides.
- Additionally they tried to run the programme for the Yorkshire Wolds DEM but did not manage to get output for larger scales than the 2 Cell neighbourhood.
- Feedback
- Firstly let me say, your feedback is much appreciated and I think you have come a long way in understanding this part of the course.
- The idea of pointing to images (photographs or synthetic 2.5D perspectives) of a landscape and indicating what to expect in terms of the metrics is a good one.
- In the web page with the pictures you have identified some places where specific metrics are likely to have high values.
- The picture of a saddle is not a great one if it is one. It looks more like a valley to me which for most equidistant orthogonal comparisons at the would be hhhl rather than hlhl at the bottom (where the arrow points to) and hhll on the sides.
- Although the source of the pictures is sort of shown by a URL in some of the images, a direct URL is not there. I would not be comfortable incoproating these into course materials I was to publish online.
- Nonetheless, the pictures do demonstrate that you have uderstood some things which is pleasing.
- The Google Earth image is good. I know you can turn on terrain on google earth and draw circles then pan around. Someone has done this and at a particular angle produced the image by grabbing the screen. Because the circle gives an idea of the terrain this is useful. It suppose one could could program a circle or disc to be coloured differently if the terrain surface was above or below the point at centre. Anyway, I'm not sure if the images was produced by one of the group using Google Earth or whether the images was simply scraped from a web page. I suspect the latter.
- The red circle in the hand-out does include the centroids of more cells than would be in the neighbourhood of what I was calling a 2 cell neighbourhood.
- What I was calling a 2 cell neighbourhood meant all cells thats centroids were in the distance ≤2 cellsizes of the centroid (not the edge) of the cell at centre.
- On reflection I think the terminology I was using is confusing and that what you have drawn should from now be called a 21 cell neighbourhood which is made up of all cells that have centroids that are <3 cellsize distances but ≥√5 cellsize distance from the centroid of a cell.
- Interestingly there are 2 different equidistant orthoganol comparions in this 21 cell neighbourhood. There are 8 cells at a distance of √5 cellsizes.
- I've had a look at the slides and see that they would need quite a lot of work before I could use them. I would not be confident to base a lecture on these as they stand.
- I am the first to admit that the version of the slides I used in the lecture with you could do with a major revision. I like your ideas for re-organising the lecture although I do think that some repetition is useful as it help things sink in and people can miss bits. Also repetition helps me as a lecturer as it gives the opportunity to raise different points.
- I like the idea of handouts that can be produced to aid learning.
- I would like you to revise this effort in order to pass it, and you should put in considerable effort to get a high mark. I am considering here that there are 10 of you.
- How about trying again to produce all the output for the Yorkshire Wolds DEM? Please try downloading the practical again and see if it works as I have made some changes. If you get stuck, please ask and I will do my best to come and help, but we may need to arrange a time. I am not in Leeds currently.
- Please try and produce images for metrics of the Yorkshire Wolds DEM so that these can form the basis of a lecture slide and/or part of a handout. Have you seen what some of the others have done in draping the results over a 2.5D representation of the terrain using ArcGIS?
- You could also produce images that can be incorporated into a handout and put in the lecture slides that will help descibe the range of cell neighbourhoods:
- You could draw neighbourhoods with 1,5,9,13,21,25,29,37,45,49 cells. Recall, the one with 49 cells is what I was calling a 4 cell neighbourhood, but I think we should use a new terminology as described above.
- What I was calling a 16 cell neighbourhood is quite a challenge to draw, but if you do, you should observe it to be approximately more circular than any of the smaller neighbourhoods.
- An interesting thing to note is that the neighbourhood always jump in multiples of 4 cells, it is usually 4 or 8, but at large distances in some instances it can be many more. That is the nature of square rasters!
- I hope you are not downhearted by me asking you to revise this and push you for a bit more work.
- Events
- Revision of XSL
- Browsing
- MoSeS NCeSS e-Infrastructure Use Case
- Version 0.0.1
- Scenario 1
- Description
- A MoSeS developer and researcher wants to examine the potential consequences of a hospital closure on the traffic in a city and generate a report which links to full details of the work and summarises the findings.
- Actor
- Actions
- Login to the MoSeS portal.
- Start a new project.
- Identify relevant data.
- Identify relevant models.
- Develop an outline of work.
- Choose or define a report template.
- Browsing
- MoSeS
- Major code refactoring...
- MoSeS NCeSS e-Infrastructure GeoLinking IE
- Events
- Browsing
- GEOG5060
- Email from Meesha:
- For the geomorphometrics assignment, I just wanted to reconfirm that all the files called hhll, etc are based on equidistant orthogonal criteria whereas the ones with avedhhh or flatness are based on averaged distances and NOT ON EQUIDISTANT ORTHOGONAL METHOD
- Reply:
- Anything with a filename containing a four character length part like hhll or hhhl are based on an equidistant orthogonal comparison. The comparison is with the cell at the location for which the metric is being generated. Of the other metrics only slopyness is based on equidistant orthogonal values. The difference is that slopyness is added to regardless of what is observed.
- Does that make it clear?
- Reply:
- e-Infrastructure GeoLinking IE
- MoSeS
- Problem with ISARDataHandler
- For some reason getRecord(short,boolean,Random) was failing.
- There are more than Integer.MAX_VALUE number of ISARDataRecords meaning that they cannot be loaded as a single array.
- This needs a few hours work to fix, but hopefully once it is then everything will run smoothly...
- MoSeS
- Tried all day to find the logic error in the IndividualCensus code but no luck:
- It is possible that I have made a complete mess of the code while trying to find the Error. Urgh! I wish I'd made a release/back up before the last few days tinkering sigh!
- It might be wise to go back to the beginning and work through everything anyway.
- Hopefully when I come back after Easter I'll meet with Mark and agree to work through this.
- NCeSS e-Infrastructure / Geolinking IE
- Juan Du from MSU interest in GAM/K.
- I emailed pointing to some resources...
- MoSeS
- Investigating Control Constraints in Greater Detail
- Published Web page with Charts of Age of HRP of Constraints and Results
- Description of graphs
- All Households is the key control constraint.
- All charts for ages up to 75 have points marked above the y=x axis.
- For the chart of nHRPAge75to84 there is a considerable scatter of points.
- If AGEH in the Household SAR was individual years of age I would hope that all these charts would be straight lines.
- The variable AGEH is aggregated in both the Household SAR and in CAS003 the table being used for control constraints.
- Emailed Mark and Martin so they can think about this too.
- I'm wondering if there is a problem with Emailed Mark and Martin so they can think about this too.
- Chat with Erling on passing
- He has given up Java and decided to use Visual Basic instead.
- Well, good luck!
- Browsing
- MoSeS
- Investigating Control Constraints in Greater Detail
- Although we have it that AllHouseholds are constrained to. It is supposed to be that age of HRP is also being constrained.
- To investigate this I am working to produce some output charting Age of HRP of constraints and results.
- Nick asked for advice about blogging and RSS feeds as he was considering setting up a blog for ReDReSS:
- The basics of a blog are that it is a chronological record made available on the world wide web. So, there are a lot of different styles you can have. Setting up RSS feeds for your posts makes it easy for others to consume/aggregate the information.
- I decided to have a home page for my blog and locate it at the following URL:
- Perhaps confusingly, the RDF http://www.geog.leeds.ac.uk/people/a.turner/personal/blog/blog.rdf.xml is just a description.
- The RDF with the RSS feeds is located at the following URL:
- The following checks the validity of the RDF with the RSS feeds:
- Following the above link should provide a view of the source of the RDF.
- Basically, for a feed you need to set up a channel containing items and items containing links in the RDF. So for each new item you add a reference in the channel and an item which links to the post.
- The following checks validity of the RSS feed in the RDF:
- As for style:
- I have been producing a new item once a month, but nearly every day I am at work I've been adding to that item.
- I have also been distilling information from the items and moving content around.
- You have probably noticed that other blogs provide others with the ability to comment on the blog, but mine doesn't have this feature. I decided against it, worrying about responsibility for that content and the time it could take to manage it. It also would have taken time to configure this functionality.
- There is software that can help do much of this editing.
- I have had good reviews of WordPress, so that might be the thing to use.
![[Validate RDF]](http://www.geog.leeds.ac.uk/people/a.turner/images/rdf_w3c_button.gif "W3C RDF Validation")
![[Validate CSS]](http://www.geog.leeds.ac.uk/people/a.turner/images/vcss.gif "W3C CSS Validation")
![[An image of Andy Turner]](http://www.geog.leeds.ac.uk/people/a.turner/a.turner.png)