human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "reclaiming memory for lock free data structures there has to be a better way"
  Abstract: Memory reclamation for lock-based data structures is typically easy. However, it is a significant challenge for lock-free data structures. Automatic techniques such as garbage collection are inefficient or use locks, and non-automatic techniques either have high overhead, or do not work for many data structures. For example, subtle problems can arise when hazard pointers, one of the most common non-automatic techniques, are applied to many lock-free data structures. Epoch based reclamation (EBR), which is by far the most efficient non-automatic technique, allows the number of unreclaimed objects to grow without bound, because one crashed process can prevent all other processes from reclaiming memory. #R##N#We develop a more efficient, distributed variant of EBR that solves this problem. It is based on signaling, which is provided by many operating systems, such as Linux and UNIX. Our new scheme takes $O(1)$ amortized steps per high-level operation on the data structure and $O(1)$ steps in the worst case each time an object is removed from the data structure. At any point, $O(mn^2)$ objects are waiting to be freed, where $n$ is the number of processes and $m$ is a small constant for most data structures. Experiments show that our scheme has very low overhead: on average 10\%, and at worst 28\%, for a balanced binary search tree over many thread counts, operation mixes and contention levels. Our scheme also outperforms a highly tuned implementation of hazard pointers by an average of 75\%. #R##N#Typically, memory reclamation is tightly woven into lock-free data structure code. To improve modularity and facilitate the comparison of different memory reclamation schemes, we also introduce a highly flexible abstraction. It allows a programmer to easily interchange schemes for reclamation, object pooling, allocation and deallocation with virtually no overhead, by changing a single line of code.

Connected through hyperedge HE-1 (induced by source paper "analysis and evaluation of non blocking interpolation search trees"):
  with members:
    - "distributionally linearizable data structures"
    - "analysis of concurrent lock free hash tries with constant time operations"
    - "reuse don t recycle transforming lock free algorithms that throw away descriptors"
    - "cache aware lock free concurrent hash tries"

Connected through hyperedge HE-2 (induced by source paper "concurrent reference counting and resource management in wait free constant time"):
  with members:
    - "multiversion concurrency with bounded delay and precise garbage collection"

Connected through hyperedge HE-3 (induced by source paper "universal wait free memory reclamation"):
  with members:
    - "hyaline fast and transparent lock free memory reclamation"

Connected through hyperedge HE-4 (induced by source paper "pointer life cycle types for lock free data structures with memory reclamation"):
  with members:
    - "hyaline fast and transparent lock free memory reclamation"
    - "decoupling lock free data structures from memory reclamation for static analysis"
    - "safe deferred memory reclamation with types"
    - "reasoning about tso programs using reduction and abstraction"
    - "proving linearizability using forward simulations"
    - "verifying concurrent stacks by divergence sensitive bisimulation"
    - "effect summaries for thread modular analysis"
    - "concurrent data structures linked in time"

Connected through hyperedge HE-5 (induced by source paper "multiversion concurrency with bounded delay and precise garbage collection"):
  with members:
    - "delay free concurrency on faulty persistent memory"
    - "pam parallel augmented maps"
    - "a general technique for non blocking trees"
    - "minuet a scalable distributed multiversion b tree"
    - "flat combining and the synchronization parallelism tradeoff"

Connected through hyperedge HE-6 (induced by source paper "efficient lock free durable sets"):
  with members:
    - "alpaca intermittent execution without checkpoints"
    - "fine grain checkpointing with in cache line logging"
    - "delay free concurrency on faulty persistent memory"
    - "efficient logging in non volatile memory by exploiting coherency protocols"

Connected through hyperedge HE-7 (induced by source paper "decoupling lock free data structures from memory reclamation for static analysis"):
  with members:
    - "verification of tree based hierarchical read copy update in the linux kernel"
    - "proving linearizability using forward simulations"
    - "verifying concurrent stacks by divergence sensitive bisimulation"
    - "effect summaries for thread modular analysis"
    - "concurrent data structures linked in time"
    - "pointer race freedom"
    - "faster linearizability checking via p compositionality"
    - "verifying linearizability a comparative survey"

Connected through hyperedge HE-8 (induced by source paper "efficient single writer concurrency"):
  with members:
    - "multiversion concurrency with bounded delay and precise garbage collection"
    - "delay free concurrency on faulty persistent memory"
    - "pam parallel augmented maps"
    - "a general technique for non blocking trees"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DC(Distributed, Parallel, and Cluster Computing)