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Documents authored by M. Ferreira Ramos, Thiago



Ramos, Fernando M. V.

Document
Programmable Network Data Planes (Dagstuhl Seminar 19141)

Authors: Gianni Antichi, Theophilus Benson, Nate Foster, Fernando M. V. Ramos, and Justine Sherry

Published in: Dagstuhl Reports, Volume 9, Issue 3 (2019)


Abstract
Software-Defined Networking (SDN) started the "softwarization" of networking. By relocating the control plane onto a logically centralized machine, SDN gave programmers the ability to specify the behavior of the network directly in software, unleashing a major transformation both in the networking research community and in industry. However, a key limitation of the original SDN vision was the limited functionality exposed in protocols such as OpenFlow. Recent efforts to develop reconfigurable data planes and high-level network programming languages has made it possible to truly program the data plane -- i.e., to change the way packets are processed on network devices. The ability to fully program the network-both control and data plane-is expected have a profound impact on the field of networking in the coming years. In this seminar we discussed the key questions and problems to be addressed in the next 10 years on the area of programmable dataplanes, and how they will potentially shape the future of networking. As an outcome we are now working on a research agenda to serve as the start of a discussion with networking researchers, practitioners, and the industry as a whole. This report is a first step towards that goal.

Cite as

Gianni Antichi, Theophilus Benson, Nate Foster, Fernando M. V. Ramos, and Justine Sherry. Programmable Network Data Planes (Dagstuhl Seminar 19141). In Dagstuhl Reports, Volume 9, Issue 3, pp. 178-201, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@Article{antichi_et_al:DagRep.9.3.178,
  author =	{Antichi, Gianni and Benson, Theophilus and Foster, Nate and Ramos, Fernando M. V. and Sherry, Justine},
  title =	{{Programmable Network Data Planes (Dagstuhl Seminar 19141)}},
  pages =	{178--201},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2019},
  volume =	{9},
  number =	{3},
  editor =	{Antichi, Gianni and Benson, Theophilus and Foster, Nate and Ramos, Fernando M. V. and Sherry, Justine},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagRep.9.3.178},
  URN =		{urn:nbn:de:0030-drops-112958},
  doi =		{10.4230/DagRep.9.3.178},
  annote =	{Keywords: programmable data planes, software-defined networks, programmable networks}
}

Ramos, Pedro Palma

Document
Implementing Python for DrRacket

Authors: Pedro Palma Ramos and António Menezes Leitão

Published in: OASIcs, Volume 38, 3rd Symposium on Languages, Applications and Technologies (2014)


Abstract
The Python programming language is becoming increasingly popular in a variety of areas, most notably among novice programmers. On the other hand, Racket and other Scheme dialects are considered excellent vehicles for introducing Computer Science concepts. This paper presents an implementation of Python for Racket and the DrRacket IDE. This allows Python programmers to use Racket libraries and vice versa, as well as using DrRacket's pedagogic features. In particular, it allows architects and designers to use Python as a front-end programming language for Rosetta, an IDE for computer-aided design, whose modelling primitives are defined in Racket. Our proposed solution involves compiling Python code into equivalent Racket source code. For the runtime implementation, we present two different strategies: (1) using a foreign function interface to borrow the data types and primitives from Python's virtual machine or (2) implementing Python's data model over Racket data types. While the first strategy is easily implemented and provides immediate support for Python's standard library and existing third-party libraries, it suffers from performance issues: it runs, at least, one order of magnitude slower when compared to Python’s reference implementation. The second strategy requires us to implement Python's data model in Racket and port all of Python's standard library, but it succeeds in solving the former's performance issues. Furthermore, it makes interoperability between Python and Racket code easier to implement and simpler to use.

Cite as

Pedro Palma Ramos and António Menezes Leitão. Implementing Python for DrRacket. In 3rd Symposium on Languages, Applications and Technologies. Open Access Series in Informatics (OASIcs), Volume 38, pp. 127-141, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)


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@InProceedings{ramos_et_al:OASIcs.SLATE.2014.127,
  author =	{Ramos, Pedro Palma and Leit\~{a}o, Ant\'{o}nio Menezes},
  title =	{{Implementing Python for DrRacket}},
  booktitle =	{3rd Symposium on Languages, Applications and Technologies},
  pages =	{127--141},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-68-2},
  ISSN =	{2190-6807},
  year =	{2014},
  volume =	{38},
  editor =	{Pereira, Maria Jo\~{a}o Varanda and Leal, Jos\'{e} Paulo and Sim\~{o}es, Alberto},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2014.127},
  URN =		{urn:nbn:de:0030-drops-45656},
  doi =		{10.4230/OASIcs.SLATE.2014.127},
  annote =	{Keywords: Python, Racket, language implementations, compilers}
}

Ferreira, Miguel

Document
Automata Serialization for Manipulation and Drawing

Authors: Miguel Ferreira, Nelma Moreira, and Rogério Reis

Published in: OASIcs, Volume 51, 5th Symposium on Languages, Applications and Technologies (SLATE'16) (2016)


Abstract
GUItar is a GPL-licensed, cross-platform, graphical user interface for automata drawing and manipulation, written in C++ and Qt5. This tool offers support for styling, automatic layouts, several format exports and interface with any foreign finite automata manipulation library that can parse the serialized XML or JSON produced. In this paper we describe a new redesign of the GUItar framework and specially the method used to interface GUItar with automata manipulation libraries.

Cite as

Miguel Ferreira, Nelma Moreira, and Rogério Reis. Automata Serialization for Manipulation and Drawing. In 5th Symposium on Languages, Applications and Technologies (SLATE'16). Open Access Series in Informatics (OASIcs), Volume 51, pp. 15:1-15:7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2016)


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@InProceedings{ferreira_et_al:OASIcs.SLATE.2016.15,
  author =	{Ferreira, Miguel and Moreira, Nelma and Reis, Rog\'{e}rio},
  title =	{{Automata Serialization for Manipulation and Drawing}},
  booktitle =	{5th Symposium on Languages, Applications and Technologies (SLATE'16)},
  pages =	{15:1--15:7},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-006-4},
  ISSN =	{2190-6807},
  year =	{2016},
  volume =	{51},
  editor =	{Mernik, Marjan and Leal, Jos\'{e} Paulo and Gon\c{c}alo Oliveira, Hugo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2016.15},
  URN =		{urn:nbn:de:0030-drops-60209},
  doi =		{10.4230/OASIcs.SLATE.2016.15},
  annote =	{Keywords: automata, serialization, visualization}
}

Ferreira, Martha Dais

Document
Robust Phoneme Recognition with Little Data

Authors: Christopher Dane Shulby, Martha Dais Ferreira, Rodrigo F. de Mello, and Sandra Maria Aluisio

Published in: OASIcs, Volume 74, 8th Symposium on Languages, Applications and Technologies (SLATE 2019)


Abstract
A common belief in the community is that deep learning requires large datasets to be effective. We show that with careful parameter selection, deep feature extraction can be applied even to small datasets.We also explore exactly how much data is necessary to guarantee learning by convergence analysis and calculating the shattering coefficient for the algorithms used. Another problem is that state-of-the-art results are rarely reproducible because they use proprietary datasets, pretrained networks and/or weight initializations from other larger networks. We present a two-fold novelty for this situation where a carefully designed CNN architecture, together with a knowledge-driven classifier achieves nearly state-of-the-art phoneme recognition results with absolutely no pretraining or external weight initialization. We also beat the best replication study of the state of the art with a 28% FER. More importantly, we are able to achieve transparent, reproducible frame-level accuracy and, additionally, perform a convergence analysis to show the generalization capacity of the model providing statistical evidence that our results are not obtained by chance. Furthermore, we show how algorithms with strong learning guarantees can not only benefit from raw data extraction but contribute with more robust results.

Cite as

Christopher Dane Shulby, Martha Dais Ferreira, Rodrigo F. de Mello, and Sandra Maria Aluisio. Robust Phoneme Recognition with Little Data. In 8th Symposium on Languages, Applications and Technologies (SLATE 2019). Open Access Series in Informatics (OASIcs), Volume 74, pp. 4:1-4:11, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@InProceedings{shulby_et_al:OASIcs.SLATE.2019.4,
  author =	{Shulby, Christopher Dane and Ferreira, Martha Dais and de Mello, Rodrigo F. and Aluisio, Sandra Maria},
  title =	{{Robust Phoneme Recognition with Little Data}},
  booktitle =	{8th Symposium on Languages, Applications and Technologies (SLATE 2019)},
  pages =	{4:1--4:11},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-114-6},
  ISSN =	{2190-6807},
  year =	{2019},
  volume =	{74},
  editor =	{Rodrigues, Ricardo and Janou\v{s}ek, Jan and Ferreira, Lu{\'\i}s and Coheur, Lu{\'\i}sa and Batista, Fernando and Gon\c{c}alo Oliveira, Hugo},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2019.4},
  URN =		{urn:nbn:de:0030-drops-108715},
  doi =		{10.4230/OASIcs.SLATE.2019.4},
  annote =	{Keywords: feature extraction, acoustic modeling, phoneme recognition, statistical learning theory}
}

Ferreira, Vitor Manuel

Document
The Use of ARM-Assembly Language and a Raspberry Pi 1 B+ as a Server to Improve Computer Architecture Skills

Authors: Vitor Manuel Ferreira, Pedro Pinto, Sara Paiva, and Maria José Azevedo Brito

Published in: OASIcs, Volume 81, First International Computer Programming Education Conference (ICPEC 2020)


Abstract
Prompting students' interest and engagement in learning environments is crucial to achieve the best results. Academia and educators in general are constantly adapting materials and methodologies in order to maximise the acquisition of contents by their students. In this case-study, a new teaching/learning methodology is presented and evaluated through a final questionnaire survey. This case-study aims to understand students' efficiency and motivation levels regarding a new teaching/learning methodology adopted in the second module of a Computer Systems and Architectures course attended by first-year Computer Sciences undergraduates. The new teaching/learning methodology relies on a specific programming language - ARMv6 assembly - to improve students' efficiency levels, and an innovative always-visible in-class mobile test scenario, implemented through a low-cost computing platform - Raspberry Pi 1 B+ - as a server, mimicking as much as possible a real-life environment, so that students believe they are working on real hardware, thus enhancing their motivation levels. The results of the questionnaire survey allowed to infer that the use of a specific programming language, such as ARMv6 assembly, coupled with a new always-visible in-class mobile test scenario were in fact efficient in raising the levels of motivation among Computer Sciences students and, consequently, improved their skills in Computer Architecture.

Cite as

Vitor Manuel Ferreira, Pedro Pinto, Sara Paiva, and Maria José Azevedo Brito. The Use of ARM-Assembly Language and a Raspberry Pi 1 B+ as a Server to Improve Computer Architecture Skills. In First International Computer Programming Education Conference (ICPEC 2020). Open Access Series in Informatics (OASIcs), Volume 81, pp. 8:1-8:11, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)


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@InProceedings{ferreira_et_al:OASIcs.ICPEC.2020.8,
  author =	{Ferreira, Vitor Manuel and Pinto, Pedro and Paiva, Sara and Brito, Maria Jos\'{e} Azevedo},
  title =	{{The Use of ARM-Assembly Language and a Raspberry Pi 1 B+ as a Server to Improve Computer Architecture Skills}},
  booktitle =	{First International Computer Programming Education Conference (ICPEC 2020)},
  pages =	{8:1--8:11},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-153-5},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{81},
  editor =	{Queir\'{o}s, Ricardo and Portela, Filipe and Pinto, M\'{a}rio and Sim\~{o}es, Alberto},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ICPEC.2020.8},
  URN =		{urn:nbn:de:0030-drops-122955},
  doi =		{10.4230/OASIcs.ICPEC.2020.8},
  annote =	{Keywords: ARM-assembly language, Raspberry Pi, always-visible in-class mobile test scenario, Computer Architecture skills, students' efficiency and motivation levels evaluation}
}

Ferreira, Matheus V. X.

Document
Invited Talk
Dynamic Posted-Price Mechanisms for the Blockchain Transaction Fee Market (Invited Talk)

Authors: Matheus V. X. Ferreira, Daniel J. Moroz, David C. Parkes, and Mitchell Stern

Published in: OASIcs, Volume 97, 3rd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2021)


Abstract
In recent years, prominent blockchain systems such as Bitcoin and Ethereum have experienced explosive growth in transaction volume, leading to frequent surges in demand for limited block space and causing transaction fees to fluctuate by orders of magnitude. Existing systems sell space using first-price auctions; however, users find it difficult to estimate how much they need to bid in order to get their transactions accepted onto the chain. If they bid too low, their transactions can have long confirmation times. If they bid too high, they pay larger fees than necessary. In light of these issues, new transaction fee mechanisms have been proposed, most notably EIP-1559, aiming to provide better usability. EIP-1559 is a history-dependent mechanism that relies on block utilization to adjust a base fee. We propose an alternative design - a dynamic posted-price mechanism - which uses not only block utilization but also observable bids from past blocks to compute a posted price for subsequent blocks. We show its potential to reduce price volatility by providing examples for which the prices of EIP-1559 are unstable while the prices of the proposed mechanism are stable. More generally, whenever the demand for the blockchain stabilizes, we ask if our mechanism is able to converge to a stable state. Our main result provides sufficient conditions in a probabilistic setting for which the proposed mechanism is approximately welfare optimal and the prices are stable. Our main technical contribution towards establishing stability is an iterative algorithm that, given oracle access to a Lipschitz continuous and strictly concave function f, converges to a fixed point of f.

Cite as

Matheus V. X. Ferreira, Daniel J. Moroz, David C. Parkes, and Mitchell Stern. Dynamic Posted-Price Mechanisms for the Blockchain Transaction Fee Market (Invited Talk). In 3rd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2021). Open Access Series in Informatics (OASIcs), Volume 97, p. 6:1, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)


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@InProceedings{ferreira_et_al:OASIcs.Tokenomics.2021.6,
  author =	{Ferreira, Matheus V. X. and Moroz, Daniel J. and Parkes, David C. and Stern, Mitchell},
  title =	{{Dynamic Posted-Price Mechanisms for the Blockchain Transaction Fee Market}},
  booktitle =	{3rd International Conference on Blockchain Economics, Security and Protocols (Tokenomics 2021)},
  pages =	{6:1--6:1},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-220-4},
  ISSN =	{2190-6807},
  year =	{2022},
  volume =	{97},
  editor =	{Gramoli, Vincent and Halaburda, Hanna and Pass, Rafael},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.Tokenomics.2021.6},
  URN =		{urn:nbn:de:0030-drops-159039},
  doi =		{10.4230/OASIcs.Tokenomics.2021.6},
  annote =	{Keywords: Blockchain, Posted-price mechanism, Credible, Incentive compatibility, Transaction fee market, first-price auction, EIP-1559}
}
Document
Credible, Strategyproof, Optimal, and Bounded Expected-Round Single-Item Auctions for All Distributions

Authors: Meryem Essaidi, Matheus V. X. Ferreira, and S. Matthew Weinberg

Published in: LIPIcs, Volume 215, 13th Innovations in Theoretical Computer Science Conference (ITCS 2022)


Abstract
We consider a revenue-maximizing seller with a single item for sale to multiple buyers with independent and identically distributed valuations. Akbarpour and Li (2020) show that the only optimal, credible, strategyproof auction is the ascending price auction with reserves which has unbounded communication complexity. Recent work of Ferreira and Weinberg (2020) circumvents their impossibility result assuming the existence of cryptographically secure commitment schemes, and designs a two-round credible, strategyproof, optimal auction. However, their auction is only credible when buyers' valuations are MHR or α-strongly regular: they show their auction might not be credible even when there is a single buyer drawn from a non-MHR distribution. In this work, under the same cryptographic assumptions, we identify a new single-item auction that is credible, strategyproof, revenue optimal, and terminates in constant rounds in expectation for all distributions with finite monopoly price.

Cite as

Meryem Essaidi, Matheus V. X. Ferreira, and S. Matthew Weinberg. Credible, Strategyproof, Optimal, and Bounded Expected-Round Single-Item Auctions for All Distributions. In 13th Innovations in Theoretical Computer Science Conference (ITCS 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 215, pp. 66:1-66:19, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)


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@InProceedings{essaidi_et_al:LIPIcs.ITCS.2022.66,
  author =	{Essaidi, Meryem and Ferreira, Matheus V. X. and Weinberg, S. Matthew},
  title =	{{Credible, Strategyproof, Optimal, and Bounded Expected-Round Single-Item Auctions for All Distributions}},
  booktitle =	{13th Innovations in Theoretical Computer Science Conference (ITCS 2022)},
  pages =	{66:1--66:19},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-217-4},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{215},
  editor =	{Braverman, Mark},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ITCS.2022.66},
  URN =		{urn:nbn:de:0030-drops-156621},
  doi =		{10.4230/LIPIcs.ITCS.2022.66},
  annote =	{Keywords: Credible Auctions, Cryptographically Secure, Single-Item}
}

Ramos, Lander

Document
Maximal Independent Sets and Maximal Matchings in Series-Parallel and Related Graph Classes

Authors: Michael Drmota, Lander Ramos, Clément Requilé, and Juanjo Rué

Published in: LIPIcs, Volume 110, 29th International Conference on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms (AofA 2018)


Abstract
We provide combinatorial decompositions as well as asymptotic tight estimates for two maximal parameters: the number and average size of maximal independent sets and maximal matchings in series-parallel graphs (and related graph classes) with n vertices. In particular, our results extend previous results of Meir and Moon for trees [Meir, Moon: On maximal independent sets of nodes in trees, Journal of Graph Theory 1988]. We also show that these two parameters converge to a central limit law.

Cite as

Michael Drmota, Lander Ramos, Clément Requilé, and Juanjo Rué. Maximal Independent Sets and Maximal Matchings in Series-Parallel and Related Graph Classes. In 29th International Conference on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms (AofA 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 110, pp. 18:1-18:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)


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@InProceedings{drmota_et_al:LIPIcs.AofA.2018.18,
  author =	{Drmota, Michael and Ramos, Lander and Requil\'{e}, Cl\'{e}ment and Ru\'{e}, Juanjo},
  title =	{{Maximal Independent Sets and Maximal Matchings in Series-Parallel and Related Graph Classes}},
  booktitle =	{29th International Conference on Probabilistic, Combinatorial and Asymptotic Methods for the Analysis of Algorithms (AofA 2018)},
  pages =	{18:1--18:15},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-078-1},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{110},
  editor =	{Fill, James Allen and Ward, Mark Daniel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.AofA.2018.18},
  URN =		{urn:nbn:de:0030-drops-89117},
  doi =		{10.4230/LIPIcs.AofA.2018.18},
  annote =	{Keywords: Asymptotic enumeration, central limit laws, subcritical graph classes, maximal independent set, maximal matching}
}
Document
First-Order Unification on Compressed Terms

Authors: Adrià Gascón, Sebastian Maneth, and Lander Ramos

Published in: LIPIcs, Volume 10, 22nd International Conference on Rewriting Techniques and Applications (RTA'11) (2011)


Abstract
Singleton Tree Grammars (STGs) have recently drawn considerable attention. They generalize the sharing of subtrees known from DAGs to sharing of connected subgraphs. This allows to obtain smaller in-memory representations of trees than with DAGs. In the past years some important tree algorithms were proved to perform efficiently (without decompression) over STGs; e.g., type checking, equivalence checking, and unification. We present a tool that implements an extension of the unification algorithm for STGs. This algorithm makes extensive use of equivalence checking. For the latter we implemented two variants, the classical exact one and a recent randomized one. Our experiments show that the randomized algorithm performs better. The running times are also compared to those of unification over uncompressed trees.

Cite as

Adrià Gascón, Sebastian Maneth, and Lander Ramos. First-Order Unification on Compressed Terms. In 22nd International Conference on Rewriting Techniques and Applications (RTA'11). Leibniz International Proceedings in Informatics (LIPIcs), Volume 10, pp. 51-60, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)


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@InProceedings{gascon_et_al:LIPIcs.RTA.2011.51,
  author =	{Gasc\'{o}n, Adri\`{a} and Maneth, Sebastian and Ramos, Lander},
  title =	{{First-Order Unification on Compressed Terms}},
  booktitle =	{22nd International Conference on Rewriting Techniques and Applications (RTA'11)},
  pages =	{51--60},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-30-9},
  ISSN =	{1868-8969},
  year =	{2011},
  volume =	{10},
  editor =	{Schmidt-Schauss, Manfred},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.RTA.2011.51},
  URN =		{urn:nbn:de:0030-drops-31263},
  doi =		{10.4230/LIPIcs.RTA.2011.51},
  annote =	{Keywords: unification, matching, grammars, compression, STG, system C++}
}
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