In this paper, the authors address the problem of minimizing the implementation cost of the Time-Multiplexed Constant Multiplication (TMCM) operation that realizes the multiplication of an input variable by a single constant selected from a set of multiple constants at a time. It presents an efficient algorithm, called ORPHEUS that finds a multiplierless TMCM design ...

The design of specialized accelerators is essential to the success of many modern systems-on-chip. Electronic system-level design methodologies and high-level synthesis tools are critical for the efficient design and optimization of an accelerator. Still, these methodologies and tools offer only limited support for the optimization of the memory structures, which are often responsible for most ...

Users increasingly rely on crowd-sourced information, such as reviews on Yelp and Amazon, and liked posts and ads on Facebook. This has led to a market for blackhat promotion techniques via fake (e.g., Sybil) and compromised accounts, and collusion networks. Existing approaches to detect such behavior relies mostly on supervised (or semi-supervised) learning over known ...

Existing database systems employ an eager transaction processing scheme – that is, upon receiving a transaction request, the system executes all the operations entailed in running the transaction before reporting to the client that the transaction has completed. The authors introduce a lazy transaction execution engine, in which a transaction may be considered durably completed ...

The linked data initiative brought new opportunities for building the next generation of Web applications. However, the full potential of linked data depends on how easy it is to transform data stored in relational databases into RDF (Resource Description Framework) triples. Recently, the W3C RDB2RDF working group proposed a mapping language, called R2RML, to specify ...

Malware remains one of the most significant security threats on the Internet. Antivirus solutions and blacklists, the main weapons of defense against these attacks, have only been (partially) successful. One reason is that cyber-criminals take active steps to bypass defenses, for example, by distributing constantly changing (obfuscated) variants of their malware programs, and by quickly ...

Open-source local file systems, such as Linux Ext4, XFS, and Btrfs, remain a critical component in the world of modern storage. For example, many recent distributed file systems, such as Google GFS and Hadoop DFS, replicate data objects (and associated metadata) across local file systems. The authors conduct a comprehensive study of file-system code evolution. ...

Modern smartphones allow for gestural touchscreen and free-form user interaction such as swiping across the touchscreen or shaking the device. However, user acceptance of motion gestures in recommender systems have not been studied much. In this paper, the authors investigated the usage of gestural interaction patterns for mobile recommender systems. They designed a prototype that ...

Auditeur is a general-purpose, energy-efficient, and context-aware acoustic event detection platform for Smartphones. It enables app developers to have their app register for and get notified on a wide variety of acoustic events. Auditeur is backed by a cloud service to store user contributed sound clips and to generate an energy-efficient and context-aware classification plan ...

Data locality and parallelism are critical optimization objectives for performance on modern multi-core machines. Both coarse-grain parallelism (e.g., multi-core) and fine-grain parallelism (e.g., vector SIMD) must be effectively exploited, but despite decades of progress at both ends, current compiler optimization schemes that attempt to address data locality and both kinds of parallelism often fail at ...