Jul 2021 - Present 1 month. San Francisco, California, United States ... Implemented tapestry algorithm for peer to peer networks with at least 10,000 nodes making 50 requests each, using the ...

Ceramic Network. The Ceramic Network is a decentralized, worldwide network of nodes running the Ceramic protocol that communicate over a dedicated topic on the Libp2p peer-to-peer networking protocol. Ceramic is able to achieve maximum horizontal scalability, throughput, and performance due to its unique design. Sharded execution environment

Systems and methods for operating an anonymous peer-to-peer ("P2P") privacy panel for audience measurement is disclosed. A plurality of portable devices are configured to record and process research data pursuant to a research operation. Each of the panelists associated with each portable devices provide panelist data to a central site, where the panelist data includes demographic ...

Peer-to-peer (P2P) computing has attracted significant interest in recent years, originally sparked by the release of three influential systems in 1999: the Napster music-sharing system, the Freenet anonymous data store, and the SETI@home volunteer-based scientific computing projects.

ViP2P is a fully functional Java-based platform for the efficient, scalable management of XML documents in structured peer-to-peer networks based on distributed hash table (DHT) indices. We exploit indices (or materialized views) deployed in the P2P network independently by the peers, to answer an interesting dialect of tree pattern queries. There is a query (and ...

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Recent advances in peer-to-peer discovery of data sources and query processing techniques have made such queries feasible and potentially more frequent. ... continuous aggregate queries in peer …

the query results within the network. 2. Related Works . The researches in the area of query processing in peer to peer networks have started to increase the efficiency of retrieving and exchanging information between peers and file sharing. The following were the areas in which researches took place. Chord is a famous DHT of O( log N

network effects, legal requirements, and technical limitations. Yet, since the birth of the Internet, there have been periods of intense interest in decentralization, including the peer-to-peer systems bonanza of the early and mid 2000s [57, 90, 107] and the current blockchain boom [39, 94, 113]. A rich set of de-

Peer-to-Peer Networks With Clustered Demands Saurabh Tewari, Student Member, IEEE, and Leonard Kleinrock, Fellow, IEEE Abstract—This paper derives the optimal search time and the optimal search cost that can be achieved in unstructured peer-to-peer networks …

This paper presents a solution for reducing the ill effects of free-riders in decentralised unstructured P2P networks. An autonomous replication scheme is proposed to improve the availability and enhance system performance. Q-learning is widely employed in different situations to improve the accuracy in decision making by each peer. Based on the performance of neighbours of a peer, every ...

Monitoring of aggregate functions is important to many ... 2 reviews the related work on processing top-k queries in distributed environments. Section 3 presents our proposed approach, FILA, and discusses how to set the filter for each ... processing algorithms have been developed for peer-to-peer networks [2] and private databases [28 ...

Niedermayer, Johannes, Mario A. Nascimento, Matthias Renz, Peer Kroger, Khaled Ammar, and Hans-Peter Kriegel. "Cost-Based Quantile Query Processing in Wireless Sensor Networks" In Mobile Data Management (MDM), 14th International Conference, vol. 1, …

network, nodes spend processing resources (i.e., cycles) to forward the query, process it, etc, and bandwidth to send and receive messages. The main cost of queries are there-fore bandwidth and processing. Since the cost of a query is not incurred at any single node in the network, it makes sense to discuss costs in aggregate (i.e., overall the ...

The ability to approximately answer aggregation queries accurately and efficiently is of great benefit for decision support and data mining tools. A P2P network consists of numerous peer nodes that share data and resources with other peers on an equal basis. Unlike traditional client-server models, no central coordination exists in a P2P system; thus, there is no central point of failure.

distributed query processing. 1.1 ODISSEA Design Overview ODISSEA is a distributed global indexing and query execution ser-vice, i.e., a system that maintains a global index structure under doc-ument insertions and updates and node joins and failures, and that executes simple but general classes of search queries in an efficient manner.

Distributed Hash Tables (DHTs) have been used in Peer-to-Peer networks to provide query lookups in typically O(log n) messages whilst requiring maintenance of only small amounts of routing state.

The IoT is considered as one of the most important supporting technologies of the smart grid and the smart grid is considered as one of the most important application areas of the IoT. However, the electric IoT has vast amount and many kinds of sensors, very high data acquisition frequency, and a highly heterogeneous network, which lead to the challenge that if the raw time-series data ...

We investigate the problem of processing historical queries on a sensor network. Since data is considered to have been already collected at the sensor nodes, the main issue is exploring the spatial component of the query in order to minimize its cost represented by the energy consumption. We assume queries can be issued at any network node, i.e., there is no central base station and all …

Peer-to-peer databases. Store and host all of your user data or application data in streams to eliminate centralized database servers, blockchains, or local storage. Streams are a backend replacement for storing user-generated content, user activity and history, application data and state, and much more.

We present a model for multidimensional data distributed in a P2P network, and a query rewriting technique, that allows a local peer to propagate OLAP queries among its acquaintances, obtaining a ...

A content sharing system, for implementation in a requesting peer, to receive at least a part of a chunk from a serving peer, the chunk being part of a content item, the requesting peer being operationally connected to a plurality of peers including the serving peer via a communications network, the content item being media content originally broadcast in a media stream by a Headend to at ...

its broadcast). If Q is a duplicate, peer p drops the query; else peer p sends results from its local file index to peer q.If the query Q's TTL has not yet expired (Q:TTL > 0), then peer p forwards the query Q with its TTL decremented by 1 to all its neighbors (except peer q). Fig. 1 provides a sketch of query processing in broadcast-style ...

When the peer with the requested file is found (referred to as query hit), the query flooding stops and it sends back the file name and file size to the client, thus following the reverse path. If there are multiple query hits, the client selects from one of these peers. Gnutella was the first decentralized peer-to-peer network.

On Efficient Aggregate Nearest Neighbor Query Processing in Road Networks W.-W. Sun, C.-N. Chen, L. Zhu, Y.-J. Gao, Y.-N. Jing, Qing Li Research output : Journal article publication › Journal article › Academic research › peer-review

Complex Queries in DHT-based Peer-to-Peer Networks. IPTPS, March 2002 (PDF (124KB)) Talks. Sharing Aggregate Computation for Distributed Queries 6/13/07 - Given at SIGMOD '07 in Beijing, China (PPT (386KB)) The Architecture of PIER: an Internet-Scale Query Processor 1/5/05 - Given at CIDR '05 in Asilomar, California (PPT (777KB))

computing in a Peer-to-Peer (P2P) setting. Trust and security are essential to establish lasting working relationships among the peers. A P2P reputation system collects peer trust scores and aggregates them to yield a global reputation. We use a new trust overlay network (TON) to model the trust relationships among the peers.

Processing of Query in Peer to Peer Networks R.Saravanan M.Tech, Lecturer Department of Computer Science Engineering St.Joseph College of Engineering and Technology P.O.Box:11007, Dar Es Salaam, Tanzania. ABSTRACT DHT based peer to peer network system is a general range of query scheme. These schemes can support the range of query

I have a list of values paid and want to display the total paid. I have used aggregation and Sum to calculate the values together. The problem is,I just want the total value printed out, but aggregation prints out: {'amount__sum': 480.0} (480.0 being the total value added. In my View, I have:

The World Wide Web is fast becoming a ubiquitous computing environment. Prevalent keyword-based search techniques are scalable, but are incapable of accessing information based on concepts. We inve...

The most basic network is a stand-alone peer-to-peer network. Peer-to-peer networks are created by connecting each device together through a hub or switch. Each computer, codec, or access control panel is equal in the eyes of the switch. This is adequate for very small networks (Fig. 18.11).

Extracting Prometheus Metrics from Application Logs. Prometheus is an open-source systems monitoring and alerting toolkit. At its core, Prometheus uses time-series data, and provides a powerful query language to analyze that data. Most Prometheus deployments integrate Grafana dashboards and an alert manager.