association for computing machinery Resources

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Association For Computing Machinery: See ACM.; Full Association For Computing Machinery Definition >>

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Biorthogonality, Step-Indexing and Compiler Correctness: This paper defines logical relations between the denotational semantics of a simply typed functional language with recursion and the operational behaviour of low-level programs in a variant SECD machine. The relations, which are defined using biorthogonality and step-indexing, capture what it means for a piece of low-level code to implement...; Tags: Compiler, Association For Computing Machinery, Development Tools, Software Development, Software/Web Development; White papers 2009-09-02
Locking Key Ranges With Unbundled Transaction Services: To adapt database technology to new environments like cloud platforms or multi-core hardware, or to try anew to provide an extensible database platform, it is useful to separate transaction services from data management elements that need close physical proximity to data. With "Generic" transactional services of concurrency control and recovery...; Tags: Association For Computing Machinery, Multi-core, Data Management, Storage, Databases, Hardware, Enterprise Software, Software; White papers 2009-08-28
Why Should We Integrate Services, Servers, and Networking in a Data Center?: Since the early days of networks, a basic principle has been that endpoints treat the network as a black box. An end-point injects a packet with a destination address and the network delivers the packet. This principle has served one well, and allowed one to scale the Internet to billions...; Tags: Data Center, Network, Server, Association For Computing Machinery, End-point, Internet, Networking; White papers 2009-08-21
De-Anonymizing the Internet Using Unreliable IDs: Today's Internet is open and anonymous. While it permits free traffic from any host, attackers that generate malicious traffic cannot typically be held accountable. This paper, presents a system called HostTracker that tracks dynamic bindings between hosts and IP addresses by leveraging application-level data with unreliable IDs. Using a month-long...; Tags: Association For Computing Machinery, Internet, E-mail, Networking, Online Communications; White papers 2009-08-21
Detailed Diagnosis in Enterprise Networks: By studying trouble tickets from small enterprise networks, the paper concludes that their operators need detailed fault diagnosis. That is, the diagnostic system should be able to diagnose not only generic faults (e.g., performance-related) but also application specific faults (e.g., error codes). It should also identify culprits at a fine...; Tags: Diagnosis, Association For Computing Machinery, Enterprise Network; White papers 2009-08-21

Delegating Network Security With More Information: Network security is gravitating towards more centralized control. Strong centralization places a heavy burden on the administrator who has to manage complex security policies and be able to adapt to users' requests. To be able to cope, the administrator needs to delegate some control back to end-hosts and users, a...; Tags: Administrator, Network, Network Security, Association For Computing Machinery, Delegation, Networking, Security; White papers 2009-08-21
Your Botnet Is My Botnet: Analysis of a Botnet Takeover: Botnets, networks of malware-infected machines that are controlled by an adversary, are the root cause of a large number of security problems on the Internet. A particularly sophisticated and insidious type of bot is Torpig, a malware program that is designed to harvest sensitive information (such as bank account and...; Tags: Credit Card, Malware, Association For Computing Machinery, Bot, Analysis, Spyware, Adware & Malware, Cyberthreats, Sales Channel, Financial Services, Security, Sales; White papers 2009-08-14
Predicting User Interests From Contextual Information: Search and recommendation systems must include contextual information to effectively model users' interests. This paper presents a systematic study of the effectiveness of five variant sources of contextual information for user interest modeling. Post-query navigation and general browsing behaviors far outweigh direct search engine interaction as an information-gathering activity. Therefore...; Tags: Search Engine, Association For Computing Machinery, Search, Research & Development, Business Operations; White papers 2009-07-23
WaterCooler: Exploring an Organization Through Enterprise Social Media: As organizations scale up, their collective knowledge increases, and the potential for serendipitous collaboration between members grows dramatically. However, finding people with the right expertise or interests becomes much more difficult. Semi-structured social media, such as blogs, forums, and bookmarking, present a viable platform for collaboration - if enough people...; Tags: Social Media, Association For Computing Machinery, Organization; White papers 2009-05-13
Using Static Analysis for Ajax Intrusion Detection: This paper presents a static control-flow analysis for JavaScript programs running in a web browser. The analysis tackles numerous challenges posed by modern web applications including asynchronous communication, frameworks, and dynamic code generation. The paper uses the analysis to extract a model of expected client behavior as seen from the...; Tags: AJAX, Association For Computing Machinery, Analysis; White papers 2009-04-24
Detecting Image Spam Using Local Invariant Features and Pyramid Match Kernel: Image spam is a new obfuscating method which spammers invented to more effectively bypass conventional text based spam filters. This paper extracts local invariant features of images and runs a one-class SVM classifier which uses the pyramid match kernel as the kernel function to detect image spam. Experimental results demonstrate...; Tags: Pyramid, Association For Computing Machinery, Kernel, Spam, Security, Spam And Phishing; White papers 2009-04-24
Web Spam Challenge Proposal for Filtering in Archives: This paper proposes new tasks for a possible future Web Spam Challenge motivated by the needs of the archival community. The Web archival community consists of several relatively small institutions that operate independently and possibly over different Top Level Domains TLDs. Each of them may have a large set of...; Tags: Web, Association For Computing Machinery, Channel Management, Marketing; White papers 2009-04-21
PermaDAQ: A Scientific Instrument for Precision Sensing and Data Recovery in Environmental Extremes: The PermaSense project has set the ambitious goal of gathering real-time environmental data for high-mountain permafrost in unattended operation over multiple years. This paper discusses the specialized sensing and data recovery architecture tailored to meet the precision, reliability and durability requirements of scientists utilizing the data for model validation. The...; Tags: Data Recovery, Precision Inc., Sensor, Association For Computing Machinery, Storage Management, Databases, Storage, Hardware, Enterprise Software, Software, Data Management; White papers 2009-04-16
File-System Intrusion Detection by Preserving MAC DTS: A Loadable Kernel Module Based Approach for LINUX Kernel 2.6.x: Every operating system has its own set of critical files, whose access is generally protected by access control mechanisms, native to the operating system. The importance of such files also simultaneously invites their inspection, unauthorized modification and tampering. So, the need for preserving the authenticity of these critical files along...; Tags: MAC, Linux Kernel, Association For Computing Machinery, Access Control, File, Linux, Operating Systems, Security, Software; White papers 2009-04-15
Resonance on the Web: Web Dynamics and Revisitation Patterns: The Web is a dynamic, ever-changing collection of information accessed in a dynamic way. This paper explores the relationship between Web page content change (obtained from an hourly crawl of over 40K pages) and people's revisitation to those pages (collected via a large scale log analysis of 2.3M users). The...; Tags: Web, Association For Computing Machinery, Channel Management, Marketing; White papers 2009-04-09
Migrating Server Storage to SSDs: Analysis of Tradeoffs: Recently, flash-based Solid-State Drives SSDs have become standard options for laptop and desktop storage, but their impact on enterprise server storage has not been studied. Provisioning server storage is challenging. It requires optimizing for the performance, capacity, power and reliability needs of the expected workload, all while minimizing financial costs....; Tags: Enterprise Server, Association For Computing Machinery, Analysis, SSD, Provisioning Server Storage, Storage, Servers, Hardware; White papers 2009-04-03
A Low-Resource Public-Key Identification Scheme for RFID Tags and Sensor Nodes: Using a combination of new and established space-saving methods, the paper presents a full-fledged public key identification scheme, which is secure yet highly efficient. The 1024-bit scheme fits completely including RAM into 4682 gate equivalents and has a mean current consumption of 14.2 µA. The main novelty in their implementation...; Tags: Identification, Association For Computing Machinery, RAM, RFID Tag, Memory, RFID, Semiconductors, Hardware, Components, Wireless And Mobility, Security, Biometrics; White papers 2009-03-18
Semi-Supervised Co-Training and Active Learning Based Approach for Multi-View Intrusion Detection: Although there is immense data available from networks and hosts, a very small proportion of this data is labeled due to the cost of obtaining expert labels. This proves to be a significant bottle-neck for developing supervised intrusion detection systems that rely solely on labeled data. In spite of the...; Tags: Association For Computing Machinery, Intrusion Detection, Network Security, Security, Networking; White papers 2009-03-12
Spam Decisions on Gray e-Mail Using Personalized Ontologies: E-mail is one of the most common communication methods among people on the Internet. However, the increase of e-mail misuse/abuse has resulted in an increasing volume of spam e-mail over recent years. As spammers always try to find a way to evade existing spam filters, new filters need to be...; Tags: Association For Computing Machinery, Ontology, E-mail, Online Communications; White papers 2009-03-12
Improved Spam Filtering by Extraction of Information From Text Embedded Image e-Mail: The increase of image spam, a kind of spam in which the text message is embedded into an attached image to defeat spam filtering techniques, is becoming an increasingly major problem.. For nearly a decade, content based filtering using text classification or machine learning has been a major trend of...; Tags: Technique, Spam Filtering, Association For Computing Machinery, Ontology, Productivity, E-mail, Spam, Strategy, Viruses And Worms, Security, Online Communications, Spam And Phishing, Management; White papers 2009-03-12