Search Results for author: Patrick Rodler

Found 21 papers, 0 papers with code

Don't Treat the Symptom, Find the Cause! Efficient Artificial-Intelligence Methods for (Interactive) Debugging

no code implementations22 Jun 2023 Patrick Rodler

For that reason, it is a vital requirement to keep the harm of emerging failures to a minimum, which means minimizing the system downtime as well as the cost of system repair.

Decision Making Decision Making Under Uncertainty +1

How should I compute my candidates? A taxonomy and classification of diagnosis computation algorithms

no code implementations26 Jul 2022 Patrick Rodler

This work proposes a taxonomy for diagnosis computation methods which allows their standardized assessment, classification and comparison.

DynamicHS: Streamlining Reiter's Hitting-Set Tree for Sequential Diagnosis

no code implementations21 Dec 2020 Patrick Rodler

The computation of this sample can be accomplished by various diagnostic search algorithms.

Sequential Diagnosis

RBF-HS: Recursive Best-First Hitting Set Search

no code implementations8 Oct 2020 Patrick Rodler

For the computation of minimum-cardinality fault explanations, we find that (1) RBF-HS reduces memory requirements substantially in most cases by up to several orders of magnitude, (2) in more than a third of the cases, both memory savings and runtime savings are achieved, and (3) given the runtime overhead is significant, using HBF-HS instead of RBF-HS reduces the runtime to values comparable with HS-Tree while keeping the used memory reasonably bounded.

Do We Really Sample Right In Model-Based Diagnosis?

no code implementations25 Sep 2020 Patrick Rodler, Fatima Elichanova

Statistical samples, in order to be representative, have to be drawn from a population in a random and unbiased way.

Sound, Complete, Linear-Space, Best-First Diagnosis Search

no code implementations25 Sep 2020 Patrick Rodler

Various model-based diagnosis scenarios require the computation of the most preferred fault explanations.

The Scheduling Job-Set Optimization Problem: A Model-Based Diagnosis Approach

no code implementations23 Sep 2020 Patrick Rodler, Erich Teppan

A common issue for companies is that the volume of product orders may at times exceed the production capacity.

Scheduling

Understanding the QuickXPlain Algorithm: Simple Explanation and Formal Proof

no code implementations7 Jan 2020 Patrick Rodler

In his seminal paper of 2004, Ulrich Junker proposed the QuickXPlain algorithm, which provides a divide-and-conquer computation strategy to find within a given set an irreducible subset with a particular (monotone) property.

Recommendation Systems

Towards Optimizing Reiter's HS-Tree for Sequential Diagnosis

no code implementations28 Jul 2019 Patrick Rodler

Reiter's HS-Tree is one of the most popular diagnostic search algorithms due to its desirable properties and general applicability.

Sequential Diagnosis

Are Query-Based Ontology Debuggers Really Helping Knowledge Engineers?

no code implementations2 Apr 2019 Patrick Rodler, Dietmar Jannach, Konstantin Schekotihin, Philipp Fleiss

Tool support for the localization and repair of faults within knowledge bases of such systems can therefore be essential for their practical success.

A New Expert Questioning Approach to More Efficient Fault Localization in Ontologies

no code implementations31 Mar 2019 Patrick Rodler, Michael Eichholzer

As a remedy, we suggest a new type of expert question which aims at fitting the answering behavior of all analyzed experts.

Fault localization

Evaluating Active Learning Heuristics for Sequential Diagnosis

no code implementations9 Jul 2018 Patrick Rodler, Wolfgang Schmid

As initial system observations usually do not suffice to deterministically pin down just one explanation of the system's misbehavior, additional system measurements can help to differentiate between possible explanations.

Active Learning Sequential Diagnosis

On the Discrimination Power and Effective Utilization of Active Learning Measures in Version Space Search

no code implementations22 Sep 2017 Patrick Rodler

Based on these, we demonstrate how efficient heuristic search methods for optimal queries in query synthesis AL scenarios can be devised.

Active Learning

Inexpensive Cost-Optimized Measurement Proposal for Sequential Model-Based Diagnosis

no code implementations28 May 2017 Patrick Rodler, Wolfgang Schmid, Konstantin Schekotihin

In this work we present strategies for (optimal) measurement selection in model-based sequential diagnosis.

Sequential Diagnosis

Scalable Computation of Optimized Queries for Sequential Diagnosis

no code implementations14 Dec 2016 Patrick Rodler, Wolfgang Schmid, Kostyantyn Shchekotykhin

During query computation, existing sequential diagnosis methods often require the generation of many unnecessary query candidates and strongly rely on expensive logical reasoners.

Sequential Diagnosis

A Theory of Interactive Debugging of Knowledge Bases in Monotonic Logics

no code implementations20 Sep 2016 Patrick Rodler

A broad variety of knowledge-based applications such as recommender, expert, planning or configuration systems usually operate on the basis of knowledge represented by means of some logical language.

Towards Better Response Times and Higher-Quality Queries in Interactive Knowledge Base Debugging

no code implementations8 Sep 2016 Patrick Rodler

The most essential benefit of such logical KBs is the opportunity to perform automatic reasoning which however requires a KB to meet some minimal quality criteria such as consistency.

Active Learning Logical Reasoning

Interactive Debugging of Knowledge Bases

no code implementations19 May 2016 Patrick Rodler

Even if a system is complete and sound and considers only minimal solutions, there are generally exponentially many solution candidates to select one from.

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