• August 27, 2012: The workshop schedule has been posted. See you in Lyon!
• May 29, 2012: The paper submission deadline has been extended to June 10, 2012.
• May 11, 2012: The EasyChair submission site is now open.
• March 7, 2012: This workshop has been accepted to be held at ICCBR 2012 in Lyon, France.

There has been recent interest from multiple perspectives in artificial intelligence approaches based around traces. An important part of users' experience is stored in traces that record human activity, for example, when interacting with computer systems through an application, a game, etc.

The opportunity to collect user experience as traces enables reusing those traces in CBR processes, since such traces capture past user experiences. Therefore, traces constitute a knowledge container from which a CBR process may build and reuse cases or traces. The goal of the workshop is to gather and contrast approaches in exploiting traces for various tasks and domains through CBR.

We welcome contributions in areas that include, but are not limited to, the following:

• Collecting traces, building cases from traces
• Modeling trace content, trace elements and cases
• Connections between trace components and domain vocabulary/knowledge
• Provenance information regarding traces
• Reasoning via user traces
• Learning by observation, demonstration or imitation
• Retrieval and adaptation of traces or episodes
• Applications (human learning, web search, collaborative work, or other novel application)
• Toolkits and/or methodologies for reasoning via traces
• Architectures of trace reusing systems
• Game playing via reusing user traces
• Tools for integrating trace-based techniques and gaming environments
• Planning from user traces
• Mining traces to find cases
• Interactive learning of dynamic knowledge
• Explanation from traces
• Lessons learned from trace-based reasoning

This workshop will be held on September 4th, 2012 as part of the ICCBR 2012 workshop series in Lyon, France. This workshop is open to all interested conference participants, but may be limited by available room facilities.

We plan to include an invited speaker to summarize recent work in this area and might also invite papers from a small but diverse set of contributors. The Organizing Committee will select a subset of the submitted papers for oral presentation. Finally, time will be reserved for a session where some participants can demonstrate their systems and illustrate the contributions of CBR technology.

We invite submissions of three types:

• Research and application papers: a maximum of 10 pages describing original contributions.
• Position papers: a maximum of 5 pages describing emerging projects or opinions on research directions.
• Demonstration of trace-related CBR systems: a maximum of 5 pages describing the system and why is it interesting for research on CBR.

Papers must be submitted in electronic form as PDF files. Papers should be submitted using the Easychair system. Springer LNCS is the format required for the final camera-ready copy - Authors' instructions along with LaTeX and Word macro files are available on the web at Springer.