part iii  building web reputation systems

... quality contributions… Reputation on the Web | 17 Who’s Using Reputation Systems? Reputation systems are the underlying mechanisms behind some of the best-known consumer websites For example: ... Use Reputation to Make Better Decisions The Reputation Statement Explicit: Talk the Talk Implicit: Walk the Walk The Minimum Reputation Statement Reputation Systems Bring Structure to Chaos Reputation ... Reputation Systems Deeply Affect Our Lives Local Reputation: It Takes a Village Global Reputation: Collective Intelligence FICO: A Study in Global Reputation and Its Challenges Web FICO? Reputation...

Ngày tải lên: 27/06/2014, 12:20

... Building Web Reputation Systems F Randall Farmer and Bryce Glass Beijing • Cambridge • Farnham • Köln • Sebastopol • Taipei • Tokyo Building Web Reputation Systems by F Randall Farmer ... Use Reputation to Make Better Decisions The Reputation Statement Explicit: Talk the Talk Implicit: Walk the Walk The Minimum Reputation Statement Reputation Systems Bring Structure to Chaos Reputation ... Reputation Systems Deeply Affect Our Lives Local Reputation: It Takes a Village Global Reputation: Collective Intelligence FICO: A Study in Global Reputation and Its Challenges Web FICO? Reputation...

Ngày tải lên: 03/07/2014, 07:20

... Preface PART I Reputation Defined and Illustrated CHAPTER Reputation Systems Are Everywhere Reputation systems impact your life every day, even when you don’t realize it You need reputation to ... nature of reputation People Have Reputations, but So Do Things We often think of reputation in terms of people (perhaps because we’re each so conscious of our own reputation) , but of course a reputation ... them Systems for monitoring reputation help to formalize and delineate this process A (sometimes, but not always) welcome side effect is that reputation systems also end up defining positive reputations,...

Ngày tải lên: 03/07/2014, 07:20

... quality contributions… Reputation on the Web | 17 Who’s Using Reputation Systems? Reputation systems are the underlying mechanisms behind some of the best-known consumer websites For example: ... values of the larger community 16 | Chapter 1: Reputation Systems Are Everywhere The Reputation Virtuous Circle Negative and Positive Reputation Positive reputations Represent the relative value of ... techniques to track and manipulate the very online reputation systems described in this book Conceptualizing Reputation Systems We’ve demonstrated that reputation is everywhere and that it brings structure...

Ngày tải lên: 03/07/2014, 07:20

... working mechanics of the reputation model: Reputation message Reputation messages, represented by the flow lines in reputation model diagrams, are information supplied to a reputation process for ... stored reputation value is simply a reputation statement that may be read as part of a reputation process that calculates a new claim value for itself or another reputation statement Many reputation ... combining multiple reputation model contexts in a single reputation system It’s important to combine only those models with compatible reputation contexts Reputation system A reputation system...

Ngày tải lên: 03/07/2014, 07:20

... rating systems, we’d be surprised if—in your mind—you’re not seeing stars Rating systems of 3, 4, and stars abound on the Web and have achieved a level of semipermanence in reputation systems ... conceptually, they are easier to incorporate into a reputation system Normalized value Normalized value is the most common type of claim in reputation systems A normalized value is always expressed ... calculation and storage of reputation statements are performed Several generic kinds of roll-ups serve as abstract templates for the actual customized versions in operational reputation systems Each type—counter,...

Ngày tải lên: 03/07/2014, 07:20

... both as sources of reputation and as consumers—the implementation of reputation systems is fraught with peril In this section, we describe several pitfalls to avoid in designing reputation models ... full-fledged reputation models and systems that are available on the Web today We look at a selection of common patterns, including voting, points, and karma We also review complex reputations, ... read-modify-write logic for stored reputation values are kept as close to the data store as possible For small systems, it may be reasonable to keep the entire reputation system in memory at once,...

Ngày tải lên: 03/07/2014, 07:20

... A karma model is reputation for users In the section “Solutions: Mixing Models to Make Systems on page 33, we explained that a karma model usually is used in support of other reputation models ... sellers This is just a partial list of the seller reputations that eBay puts on display The full list of displayed reputations almost serves as a menu of reputation types present in the model Every ... update the marketplace’s interface and reputation systems Flickr Interestingness Scores for Content Quality The popular online photo service Flickr uses reputation to qualify new user submissions...

Ngày tải lên: 03/07/2014, 07:20

... grammar for reputation systems • Creating a set of key building blocks and using them to describe simple reputation models • Using it all to illuminate popular complex reputation systems found ... downplaying the system’s importance Reputation from Theory to Practice Parts I and II of this book focused on reputation theory: • Understanding reputation systems through defining the key concepts ... considerations, and the results are often very costly 94 | Chapter 4: Common Reputation Models PART III Building Web Reputation Systems CHAPTER Planning Your System’s Design Parts I and II were theory—a...

Ngày tải lên: 03/07/2014, 07:20

... using a Web 1.0 content control pattern There’s really not much a reputation system can for you in this case; no user participation equals no reputation needs Sure, you could grant users reputation ... example is early web indexes, such as the 100% staff-edited Yahoo! Directory, which was the Web s most popular index until web search demonstrated that it could better handle the Web s exponential ... content control pattern—the first generation of online reputation systems gave users the power to leave ratings and reviews of otherwise static web content, which then was used to produce ranked...

Ngày tải lên: 03/07/2014, 07:20

... (especially for social web experiences) is assuming a higher level of competitiveness than what really exists Because reputation systems and their attendant incentive systems are often intended ... who gamed user recognition reputation systems to the point of seriously decreasing the quality of the applications’ key content Like clockwork, it didn’t take long for reputation abuse to hit the ... exclusivity on your reputation system (how stingy, or how generous, should you be when doling out reputations?) We also provide some guidance for determining the appropriate scope of your reputations...

Ngày tải lên: 03/07/2014, 07:20

... relation to a reputation entity, it is very likely that you can derive valuable reputation information from that action Recall the discussion of implicit and explicit reputation claims in “The Reputation ... reputation models are real-time systems in which reputations change constantly, even when users aren’t providing any direct input For example, a mail antispam reputation model for IP addresses ... are used to start a reputation process as part of periodic maintenance; for example, a timer can trigger reputation scores to decay or expire (For one benefit of calculating reputation on a time-delay,...

Ngày tải lên: 03/07/2014, 07:20

... incentives for users to contribute better content, it turned for help to reputation systems It was clear that the scope of reputation was different for each post and for all the posts in a thread ... transform them into reputation inputs, and all the locations that will be influenced by the aggregated results Common Reputation Generation Mechanisms and Patterns Though all reputation is generated ... custom-built models, we’ve identified certain common patterns in the course of designing reputation systems and observing systems that others have created These few patterns are not at all comprehensive,...

Ngày tải lên: 03/07/2014, 07:20

... public reputation apply to personal ones, too, but take care to ensure that each user knows when her reputations will and will not be displayed to others Who Will See a Reputation? | 169 Keep a reputation ... player Public Reputations: Widely Visible When the whole community would benefit from knowing the reputations of either people or content, consider displaying public reputations Public reputations ... See a Reputation? | 171 Public reputations are helpful for allowing users to compare like items Public karma reputations also serve as an effective extension of a person’s identity Corporate Reputations...

Ngày tải lên: 03/07/2014, 07:20

... Internet-wide trustworthiness karma Content Reputation Is Very Different from Karma | 177 Yahoo! holds reputation for karma scores to a higher standard than reputation for content Be very careful ... competitive Reputation Display Formats Reputation data can be displayed in numerous formats By now, you’ve actually already done much of the work of selecting appropriate formats for your reputation ... a reputation must hold other numeric values to better represent the meaning of the normalized score when it is displayed For example, in a 178 | Chapter 7: Displaying Reputation simple-mean reputation, ...

Ngày tải lên: 03/07/2014, 07:20

... again, your reputation system can come to the rescue Reputation- ranked ordering is available regardless of a visitor’s prior relationship with your site In fact, community-based reputation can ... online at DesigningSocialInterfaces.com Going Beyond Displaying Reputation This entire chapter has focused on the explicit display of reputation, usually directly to users Though important, this ... using reputation to modify the utility of an application—to separate the best entities from the pack, and to help identify and destroy the most harmful ones 196 | Chapter 7: Displaying Reputation...

Ngày tải lên: 03/07/2014, 07:20

... discussed personal reputations (see “Personal Reputations: For the Owner’s Eyes Only” on page 169) and hinted at some of their utility But you may still have questions: why keep a personal reputation? ... intent to display it to the community (a “public” reputation) , shouldn’t a completely hidden (a “corporate”) reputation suffice? Why would you keep a reputation, and go to the bother of displaying ... ask about their reputation, each of us does control one very important component of our reputations: the contexts we choose to affiliate ourselves with Sometimes, the degree of reputation you’ve...

Ngày tải lên: 03/07/2014, 07:20

... connecting the reputation engine to your application and what final decisions you will need to make about your reputation model Implementing Your Reputation Model The heart of your new reputation- infused ... lessons of deploying reputation systems at Yahoo! is the engineering team needs to be involved at every major milestone during the design process Even if you have a separate reputation implementation ... displays of reputation aren’t usually the most interesting or valuable; using reputation to identify and filter the best (and worst) reputable entities in your application is Using reputation...

Ngày tải lên: 03/07/2014, 07:20

... application team to add new types of uses, such as more reputation- weighted searches, or to add more pages that display a reputation score Tuning reputation systems for ROI, behavior, and future improvements ... these distribution thresholds for reputations, your calculations will (of course!) vary with the context of use Is this karma (people reputation) or content reputation? Be more mindful of the ... most networks, so—really—your reputations should reflect those values also Tuning for the Future There are sometimes pleasant surprises when implementing reputation systems for the first time When...

Ngày tải lên: 03/07/2014, 07:20

... Figure 10-3 The system would use reputation as a basis for hiding abusive content, leaving staff to handle only appeals Most of the rest of this chapter details the reputation model designated by ... more details about the other (nonreputation) portions of the diagram, such as the Notify Author and Appeals process boxes Yahoo! has applied for a patent on this reputation model, and that application ... Yahoo! Answers Community Guidelines Limiting Scope When a reputation model is introduced, users often are confused at first about what the reputation score means The design of the community content...

Ngày tải lên: 03/07/2014, 07:20