In what year did the author of 'Efficient Algorithms for Path Problems with General Cost Criteria' retire from their position as Director at Max Planck Institute for Informatics?
2018
Thomas Lengauer is the author of Katarzyna Bozek et al.: Analysis of Physicochemical and Structural Properties Determining HIV-1 Coreceptor Usage. In 2001 he published Geno2pheno: estimating phenotypic drug resistance from HIV-1 genotypes. Thomas Lengauer is the author of Sven-Eric Schelhorn et al.: An integrative approach for predicting interactions of protein regions. (1998) authored by Thomas Lengauer. Niko Beerenwinkel et al.: Identifying drug resistance-associated patterns in HIV genotypes. (2008) authored by Thomas Lengauer. Andreas Hahn and Thomas Lengauer: Confirmation of human protein interaction data by human expression data. (2008) authored by Thomas Lengauer. Daniel Hanisch et al.: ProML - the Protein Markup Language for specification of protein sequences, structures and families. (2002) authored by Thomas Lengauer. Matthias Rarey et al.: Placement of medium-sized molecular fragments into active sites of proteins. (1996) authored by Thomas Lengauer. Thomas Lengauer has been President of the ISCB from January 2018 to January 2021. He has been part-time affiliated with the Institute of Virology at Cologne University. Niko Beerenwinkel and Oliver Sander et al.: Structural Descriptors of gp120 V3 Loop for the Prediction of HIV-1 Coreceptor Usage. (2002) authored by Thomas Lengauer. Fellow of the ISCB in 2015 and a Fellow of the ISCB in 2015.
[INST]
Utilize the provided context information, to generate answers to the following question: 
- Generate the answer to the question based on the provided context.
- Avoid including any explanations or apologies in your responses.
- Only respond to questions that ask for the answer to the target question without any additional information.
- Strictly provide the answer without any additional text.
Question: In what year did the author of 'Efficient Algorithms for Path Problems with General Cost Criteria' retire from their position as Director at Max Planck Institute for Informatics?
Context: Thomas Lengauer is the author of Katarzyna Bozek et al.: Analysis of Physicochemical and Structural Properties Determining HIV-1 Coreceptor Usage. In 2001 he published Geno2pheno: estimating phenotypic drug resistance from HIV-1 genotypes. Thomas Lengauer is the author of Sven-Eric Schelhorn et al.: An integrative approach for predicting interactions of protein regions. (1998) authored by Thomas Lengauer. Niko Beerenwinkel et al.: Identifying drug resistance-associated patterns in HIV genotypes. (2008) authored by Thomas Lengauer. Andreas Hahn and Thomas Lengauer: Confirmation of human protein interaction data by human expression data. (2008) authored by Thomas Lengauer. Daniel Hanisch et al.: ProML - the Protein Markup Language for specification of protein sequences, structures and families. (2002) authored by Thomas Lengauer. Matthias Rarey et al.: Placement of medium-sized molecular fragments into active sites of proteins. (1996) authored by Thomas Lengauer. Thomas Lengauer has been President of the ISCB from January 2018 to January 2021. He has been part-time affiliated with the Institute of Virology at Cologne University. Niko Beerenwinkel and Oliver Sander et al.: Structural Descriptors of gp120 V3 Loop for the Prediction of HIV-1 Coreceptor Usage. (2002) authored by Thomas Lengauer. Fellow of the ISCB in 2015 and a Fellow of the ISCB in 2015.
[/INST] Answer:
