My Crackpot Development Blog

This entry does not have to do with Planning, but some softwares we are using. Users of svn know that "svn merge" is often troub...

A change is a modification of the plan. Suppose we have $n$ candidate changes $c_1, c_2, ..., c_n$. Each change $c_i$ has an associated meas...

Recently I refactored the Crackpot code to replace all shared_ptrs by auto_ptrs and pointer containers (see here for a list of changes). Th...

We discussed the following areas of work/PhD theses for the future research in planning: 1. Action Component Relations -- templates of the k...

Last academic year we had 3 Final Year Student projects related to Crackpot. I have started with merging code of these FYP projects from bra...

A subplan is a subset of actions of a plan. A subplan S is composable with a plan A to yield another plan B. All plan-related data structure...

I had been off on a short vacation to India. BTW my research paper has been accepted in a conference. I am particularly excited because this...

Finally discovered a bug that was preventing plan being formed on Logistics Domain. The bug was that the object of derived classes in a cond...

http://stackoverflow.com/questions/42793/gui-design-techniques-to-enhance-user-experience A figure like http://www.adaptive-planning.com/ima...

The following is based on planning group discussion on 14th April 2009. The text is copied from Eric's email. We discussed possible appr...

Recently I performed experiments for a paper I submitted to MIC 2009 conference. More on this later. There are still issues with solving pro...

This article is based on planning group discussion on March 17, 2009. Each Cost belongs to a certain CostType. Each Attribute has costs of m...

Update: Please refer to Crackpot wiki documentation for an updated version of this piece. This article was copied from Crackpot wiki on...

Planning in the Logistics Domain still does not reduce the cost to 0. Meanwhile I moved on to other things, which require attention too. Tod...

I am still struggling with Logistics Domain. As the closeness to finishing the goal reduces, the amount of effort needed increases. I played...

Logging is quite useful for debugging. Today I found a nice article on logging [1]. Besides describing what to log at system startup, I also...

I am still struggling with logistics domain. Need to finish it quickly and move on to more important work of performing parallelization expe...

I tend to think these are not important right now for Crackpot executable. However a few links that I just went through: [1] http://wiki.wx...

I have been struggling with making Crackpot work with Logistics Domain. One recent observation here: This is the plot of number of costs in ...

Non-stationary Decision Making The basic question discussed in this article is Out of a set of possible choices (of heuristics, for example)...

1. There was a bug introduced recently in PlannerImpl code due to which the heuristics were not selected based on their currentPreference. T...

Consistency of Domain Definition Rules of thumb: 1. Every action type should use an actuator Consistency of Initial State 1. Every attribute...

One problem that often occurs in planning in Crackpot is two same actions (needing same preconditions) occurring concurrently. For example, ...

One of the requirements in Logistics Domain is inheritance of object types. For example, the airports are also depots (trucks travel from de...

We use some kind of heuristic distance computation between different values of an attribute. One often used (and also used by us) heuristic ...

Important Factors for Distribution: * amount of communication needed with other AttributeInstances * close neighbours with which frequentl...

goal -> action + condition* condition -> action + condition* In Crackpot, we store each attribute and all conditions on an attribute. ...

Case for Database There are several places where database can be useful in Crackpot. Storing and retrieving plans. Storing data from GUI for...

Planning System Why do we need a class ObjectType and another called ObjectInstance? Why not just one class Object (refering to ObjectInstan...

Changes and refactoring are an intrinsive part of evolution of any software. There is a lot of changes needed in Crackpot (code in trunk). S...

In this entry we list some good heuristics for Cost Repair. These can be used by CostManager to select appropriate Costs to fix. Do Somethin...

We target the problem of selecting proper heuristics for repair of a particular cost. The following things are important here: 1) What featu...

We decided earlier that each Cost is fixed by one particular CostCenter - this mapping is statically defined. While this decision simplifies...