====== The HeKatE RunTime ======

HeKatE Run Time ([[hekate:HeaRT]]) is a dedicated inference engine for the XTT2 rule bases.
The engine implements the inference based on [[ALSVfd]] logic. 
It is implemented in Prolog in order to directly interpret the [[HMR]]
representation which is generated by [[HQEd]].  
[[HMR]] (HeKatE Meta
Representation) is a textual representation of the [[XTT2]] logic designed
by [[HQEd]].  It is a human readable form, as opposed to the machine
readable HML ([[HeKatE Markup Language]]) format.  HeaRT allows to: store and export models in [[HMR]]
files, and verify [[HMR]] syntax and logic.

Currently the runtime is in a beta stage.

HeaRT is part of [[HaDEs]].

See also the [[hekatedev:heart|developemnt page.]]

====== Getting it ======
Just download a HeaRT milestone file below.

You need a SWI-Prolog environment.

===== Releases =====
==== M6 ====
Download the {{:hekate:heart-m6.tar.gz}} file.

==== M5 ====
Download the {{:hekate:heart-m5.tar.gz}} file.
==== M4 ====
Download the {{:hekate:heart-m4.tar.gz}} file.

==== M3 ====
Download the {{:hekate:heart-m3.tar.gz}} file.

==== Previous ====
Download the {{:hekate:heart-m2_1.tar.gz}} file.\\
Download the {{:hekate:heart-m2.tar.gz}} file.\\
Download the {{:hekate:heart-m1.tar.gz}} file.

====== HeaRT Quick Start ======

===== What is HeaRT =====
HeaRT is an inference engine for XTT2 rule based systems.
More about HeaRT and XTT2: [[http://ai.ia.agh.edu.pl/wiki/hekate:heart_howto|here]], {{:student:winter_of_code_2012:praca.pdf|here}} and [[http://ai.ia.agh.edu.pl/wiki/_media/hekate:bib:csltr-4_2009.pdf?cache=|here]]

HeaRT uses HMR language. More about the language: [[http://ai.ia.agh.edu.pl/wiki/hekate:hmr|here]]

HeaRT uses TCP/IP protocol when running in server mode to communicate. more about it [[http://ai.ia.agh.edu.pl/wiki/hekate:heart_howto#tcp_protocol_how_to|here]]

==== Documentation ====
See the [[HeaRT Overview]] as well as the more technical [[HeaRT HowTo]].
For a detailed documentation see [[hekate:bib:hekate_bibliography#gjn2009csltr-heart|the HeaRT technical report]].

===== How to install and run HeaRT =====
  - Download and install [[http://www.swi-prolog.org/|SWI-Prolog]]. On Linux, you can install ''swipl'' from repository.
  - Download HeaRT from one of the obove distributions
  - Run HeaRT:
    - Linux: \\ cd ''HEART_DIR \\ ./heart''
    - Windows:\\ ''File->Consult->heart.pl''
  - Run HeaRT in server mode. Type in SWI-Prolog console: ''srv.''
Check the simplest example of HMR model - [[http://ai.ia.agh.edu.pl/wiki/hekate:cases:hekate_case_thermostat:start|Thermostat]]. ({{:student:winter_of_code_2012:thermostat.pl|Download}})
===== How to use TCP/IP Protocol =====
Run it in different modes: 
  * Fixed order inference (run tables given as a parameter. In this case **ms,dt,th,os**): ''?- gox(init,[ms,dt,th,os],foi).''
  * Data-driven (give only start tables): ''?- gox(init,[ms,dt,th],ddi).''
  * Goal-driven (give only goal table): ''?- gox(init,[os],gdi).''
  * Token-driven (given goal table, follow links): ''?- gox(init,[os],tdi).''

Check the TCP/IP protocol:
  * Run model. We assume that models are stored in **storage** directory. Each user have his own directory inside **storage**. For example user called **user2** that owns **thermostat.pl** model, willhave it stored in HEART_DIR/storage/user2/thermostat.pl. 
    - Run heart in server mode: ''srv''
    - Run telnet on port 8090 (default HeaRT port)
    - Request list of all models: [model, getlist].
    - Run model for a given state: [model,run,'thermostat','user2',ddi, [ms,dt,th,os], [ [day,mon], [hour,13], [month, 3] ] ].


====== News ======
   * **2009.11.30** -- HeaRT M3, important bug fixes and improvements after cases implementation, trajectory, attribute domains handling, hqed integration.
   * **2009.08.19** -- HeaRT M2_1, server invocation and documentation fixes.
   * **2009.08.14** -- HeaRT M2, beta stage, most of the functionality implemented, halva framework and integration libraries provided.
   * **2009.05.13** -- HeaRT M1, alpha stage, needs testing, support by <esimon@student.agh.edu.pl>




====== Report bugs ======

Please report the bugs, suggestions to the [[https://hekate.ia.agh.edu.pl/webtrac/hades/trac.vc|CVStrac]] system.

Login:
  * access the system with the wiki user/pass
  * do not extra login to the CVStrac itself
  * submit new //Tickets// anonymously, use //HeaRT// subsystem
  * please leave your contact information, as well as other reference, e.g. MIW project ID