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: "oh ram one and a half round atomic memory"
  Abstract: Emulating atomic read/write shared objects in a message-passing system is a fundamental problem in distributed computing. Considering that network communication is the most expensive resource, efficiency is measured first of all in terms of the communication needed to implement read and write operations. It is well known that 2 communication round-trip phases involving in total 4 message exchanges are sufficient to implemented atomic operations. It is also known that under certain constraints on the number of readers with respect to the numbers of replica servers and failures it is possible to implement single-writer atomic objects such that each operation involves one round-trip phase. We present algorithms that allow operations to complete in 3 communication exchanges without imposing any constraints on the number of readers and writers. Specifically, we present an atomic memory implementation for the SWMR setting, where reads complete in 3 communication exchanges and writes complete in 2 exchanges. We pose the question of whether it is possible to implement MWMR memory where operations complete in at most 3 communication exchanges. We answer this question in the negative by showing that an atomic memory implementation is impossible if both read and write operations take 3 communication exchanges, even when assuming two writers, two readers, and a single replica server failure. Motivated by this impossibility result, we provide a MWMR atomic memory implementation where reads involve 3 and writes 4 communication exchanges. In light of our impossibility result these algorithms are optimal in terms of the number of communication exchanges. We rigorously reason about the correctness of the algorithms.

Connected through hyperedge HE-1 (induced by source paper "fine grained analysis on fast implementations of multi writer atomic registers"):
  with members:
    - "consistency in non transactional distributed storage systems"

Connected through hyperedge HE-2 (induced by source paper "self stabilizing snapshot objects for asynchronous fail prone network systems"):
  with members:
    - "self stabilizing and private distributed shared atomic memory in seldomly fair message passing networks"
    - "set constrained delivery broadcast definition abstraction power and computability limits"
    - "two bit messages are sufficient to implement atomic read write registers in crash prone systems"

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)