human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "BPLRU: a buffer management scheme for improving random writes in flash storage"
  Abstract: Flash memory has become the most important storage media in mobile devices, and is beginning to replace hard disks in desktop systems. However, its relatively poor random write performance may cause problems in the desktop environment, which has much more complicated requirements than mobile devices. While a RAM buffer has been quite successful in hard disks to mask the low efficiency of random writes, managing such a buffer to fully exploit the characteristics of flash storage has still not been resolved. In this paper, we propose a new write buffer management scheme called Block Padding Least Recently Used, which significantly improves the random write performance of flash storage. We evaluate the scheme using trace-driven simulations and experiments with a prototype implementation. It shows about 44% enhanced performance for the workload of MS Office 2003 installation.

Connected through hyperedge HE-1 (induced by source paper "CAFTL: a content-aware flash translation layer enhancing the lifespan of flash memory based solid state drives"):
  with members:
    - "Multi-Channel Architecture-Based FTL for Reliable and High-Performance SSD"

Connected through hyperedge HE-2 (induced by source paper "FlashStore: high throughput persistent key-value store"):
  with members:
    - "Bluecache: a scalable distributed flash-based key-value store"

Connected through hyperedge HE-3 (induced by source paper "DULO: an effective buffer cache management scheme to exploit both temporal and spatial locality"):
  with members:
    - "Integrated prefetching and caching in single and parallel disk systems"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science