SOCIAL SEARCH ENGINES

2007 ◽  
Vol 17 (07) ◽  
pp. 2355-2361 ◽  
Author(s):  
MASSIMO MARCHIORI

The web landscape has undergone massive changes in the past years. On the other hand, search engine technology has not quite kept the same pace. In this article we look at the current scenarios, and argue how social flows can be used to make up for a better generation of search engines. We consider how society and technological progress somehow changed the rules of the game, introducing good but also bad components, and see how this situation could be modeled by search engines. Along this line of thinking, we show how the real components of interest are not just web pages, but flows of information of any kind, that need to be merged: this opens up for a wide range of improvements and far-looking developments, towards a new horizon of social search.

Author(s):  
Sutirtha Kumar Guha ◽  
Anirban Kundu ◽  
Rana Dattagupta

In this chapter a domain based ranking methodology is proposed in cloud environment. Web pages from the cloud are clustered as ‘Primary Domain' and ‘Secondary Domain'. ‘Primary' domain Web pages are fetched based on the direct matching with the keywords. ‘Primary Domain' Web pages are ranked based on Relevancy Factor (RF) and Turbulence Factor (TF). ‘Secondary Domain' is constructed by Nearest Keywords and Similar Web pages. Nearest Keywords are the keywords similar to the matched keywords. Similar Web pages are the Web pages having Nearest Keywords. Matched Web pages of ‘Primary' and ‘Secondary' domain are ranked separately. A wide range of Web pages from the cloud would be available and ranked more efficiently by this proposed approach.


2015 ◽  
Vol 12 (1) ◽  
pp. 91-114 ◽  
Author(s):  
Víctor Prieto ◽  
Manuel Álvarez ◽  
Víctor Carneiro ◽  
Fidel Cacheda

Search engines use crawlers to traverse the Web in order to download web pages and build their indexes. Maintaining these indexes up-to-date is an essential task to ensure the quality of search results. However, changes in web pages are unpredictable. Identifying the moment when a web page changes as soon as possible and with minimal computational cost is a major challenge. In this article we present the Web Change Detection system that, in a best case scenario, is capable to detect, almost in real time, when a web page changes. In a worst case scenario, it will require, on average, 12 minutes to detect a change on a low PageRank web site and about one minute on a web site with high PageRank. Meanwhile, current search engines require more than a day, on average, to detect a modification in a web page (in both cases).


2003 ◽  
Vol 21 (2) ◽  
pp. 367-376 ◽  
Author(s):  
Piotr Górecki

Susan Reynolds's article is a culmination and a turning point. It builds on several approaches to medieval law and culture, of which two strike me as especially important. One is a study of legal history as a domain of human activity, especially habitual or routine activity, pursued by a wide range of social groups. The other is a search for the meaning and the criteria of the enormous transition during the central Middle Ages, which Christopher Dawson at the dawn of this subject, and Robert Bartlett in its currently definitive moment, have identified as “the making of Europe.” The first subject exists above all thanks to the work of Reynolds herself, while the second is an outcome of a number of quite distinct scholarly trajectories, spanning several generations. Apart from some suggestive and implicit links, those two subjects have, over the past quarter century, been pursued separately. Reynolds's article brings them together.


Legal Studies ◽  
1992 ◽  
Vol 12 (1) ◽  
pp. 1-19 ◽  
Author(s):  
A. I. Ogus

Regulation as a legal form of social engineering has been subjected to much analysis in the last decade or so. The importance of the topic to contemporary law cannot be overstated: on the one hand, it has been the avowed aim of government to ‘deregulate’ industry; on the other hand, and paradoxically, both the concomitant policy of privatisation and the evolution towards a Single European Market have increased the need for regulation in appropriate areas. The efforts to explore the strengths and weaknesses of different regulatory forms have brought together scholars from a wide range of disciplines. Administrative lawyers have been concerned with how the power of decision-making is allocated between institutions and the general problems of accountability and control of discretion to which this gives rise. Socio-legal researchers have critically examined the practices of regulatory agencies as regards rule formulation and enforcement.


MRS Bulletin ◽  
1998 ◽  
Vol 23 (9) ◽  
pp. 22-27 ◽  
Author(s):  
James E. Butler ◽  
Henry Windischmann

The last decade and a half has seen an explosive growth in the synthesis of diamond materials by a variety of chemicalvapor-deposition (CVD) processes driven by both scientific curiosity and technological exploitation for diverse applications in the fields of hard coatings, tools, optics, passive and active electronics, thermal management, corrosion protection, and radiation detection. Beginning in the 1980s, micron-sized diamond particles were reported by a few groups using hot filaments and a seemingly magical (alchemical) recipe of hydrocarbons and hydrogen. Now near the end of the 1990s, the basic science of diamond growth by CVD is well-understood. Diverse plasma- and thermal-based techniques have been developed for deposition of diamond. Polycrystalline films several mm thick and over 12 in. (30 cm) in diameter are a reality. Many companies are commercializing a wide range of products, and the cost of deposition has dropped by over three orders of magnitude. This article reviews these developments and highlights challenges for the future. It is organized along two themes: scientific advances and technological progress.


1969 ◽  
Vol 12 (02) ◽  
pp. 131-137 ◽  
Author(s):  
Barbara Dubins

The Comoro Archipelago is situated at the head of the Mozambique Channel, midway between Cape Amber and Cape Delgado. The largest of the four islands, Great Comoro (or Grande Comore), 175 miles from Mozambique, is the northernmost island in the group. Mayotte (or Mayotta), the first of the islands to become a French colony, and the southernmost in the group, is the closest to Madagascar. To the northwest of Mayotte is Anjouan (or Johanna), referred to by authors, both ancient and modern, because of its fertility, as the “Pearl of the Comoro Islands”; immediately to the south of Great Comoro, and almost parallel with Anjouan, is Mohilla (or Moheli), the smallest island in the group. The population of the islands is a mixture of African, Arab, and Malagasy, numbering over 170,000 people, with the heaviest concentration on Anjouan. The exportation of agricultural products has always been the chief industry of the archipelago. Its location at the head of the Mozambique Channel, and the wide range of food products available, made the Comoro Islands a popular supply stop for ships bound for India and the Far East via the Mozambique Channel; for the ships of the British antislavery squadron; and for whalers fishing in the southern Indian Ocean. European technological progress and the opening of the Suez Canal combined to render this function obsolete. During the last half of the nineteenth century, Mayotte, which became a French colony in 1841, was a moderately successful sugar colony. Plantations were also opened on Anjouan and Mohilla, but it was not until after the establishment of a French protectorate over the other two islands in 1886 that plantation economies and new crops were introduced to the rest of the archipelago. Ylang-Ylang, a perfume essence, is the major export crop; sisal, vanilla, cocoa, and coffee are also exported. Coconuts are the only export commodity which has survived from the precolonial economy.


2019 ◽  
Author(s):  
Lucas van der Deijl ◽  
Antal van den Bosch ◽  
Roel Smeets

Literary history is no longer written in books alone. As literary reception thrives in blogs, Wikipedia entries, Amazon reviews, and Goodreads pro les, the Web has become a key platform for the exchange of information on literature. Al- though conventional printed media in the eld—academic monographs, literary supplements, and magazines—may still claim the highest authority, online me- dia presumably provide the rst (and possibly the only) source for many readers casually interested in literary history. Wikipedia o ers quick and free answers to readers’ questions and the range of topics described in its entries dramatically exceeds the volume any printed encyclopedia could possibly cover. While an important share of this expanding knowledge base about literature is produced bottom-up (user based and crowd-sourced), search engines such as Google have become brokers in this online economy of knowledge, organizing information on the Web for its users. Similar to the printed literary histories, search engines prioritize certain information sources over others when ranking and sorting Web pages; as such, their search algorithms create hierarchies of books, authors, and periods.


2021 ◽  
Author(s):  
Yishay Mansour ◽  
Alex Slivkins ◽  
Vasilis Syrgkanis ◽  
Zhiwei Steven Wu

In a wide range of recommendation systems, self-interested individuals (“agents”) make decisions over time, using information revealed by other agents in the past, and producing information that may help agents in the future. Each agent would like to exploit the best action given the current information but would prefer the previous agents to explore various alternatives to collect information. A social planner, by means of a well-designed recommendation policy, can incentivize the agents to balance exploration and exploitation in order to maximize social welfare or some other objective. The recommendation policy can be modeled as a multiarmed bandit algorithm under Bayesian incentivecompatibility (BIC) constraints. This line of work has received considerable attention in the “economics and computation” community. Although in prior work, the planner interacts with a single agent at a time, the present paper allows the agents to affect one another directly in a shared environment. The agents now face two sources of uncertainty: what is the environment, and what would the other agents do? We focus on “explorable” actions: those that can be recommended by some BIC policy. We show how the principal can identify and explore all such actions.


2002 ◽  
Vol 63 (4) ◽  
pp. 354-365 ◽  
Author(s):  
Susan Augustine ◽  
Courtney Greene

Have Internet search engines influenced the way students search library Web pages? The results of this usability study reveal that students consistently and frequently use the library Web site’s internal search engine to find information rather than navigating through pages. If students are searching rather than navigating, library Web page designers must make metadata and powerful search engines priorities. The study also shows that students have difficulty interpreting library terminology, experience confusion discerning difference amongst library resources, and prefer to seek human assistance when encountering problems online. These findings imply that library Web sites have not alleviated some of the basic and long-range problems that have challenged librarians in the past.


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