BACKGROUND 
     1. Field of the Invention 
     Implementations consistent with the principles of the invention relate generally to information aggregation systems and, more particularly, to personalization of news content aggregated by a news aggregation service. 
     2. Description of Related Art 
     Existing content aggregation services (e.g., Google News) search out, and aggregate, news, blogs, RSS (real simple syndication) feeds and other content published on web pages throughout the Internet. Specifically relating to news aggregation services, in response to a search query from a user, or when a user browses a newspaper section of the news aggregation service, the news aggregation service presents a list of stories, from the aggregated news content, relevant to the query or to the newspaper section requested, with each story involving a group of articles from different publications dealing with the same topic. To keep abreast of developments in the news, users must periodically access the news aggregation service, re-enter a search query and view relevant news stories. 
     SUMMARY 
     According to one aspect consistent with the principles of the invention, a method may include fetching news content from a plurality of news source servers; aggregating the news content; presenting the aggregated news content to a user; receiving a request to remove a news item from the aggregated news content; and presenting updated aggregated news content, where the requested news item has been removed. 
     According to another aspect, a system may include a news aggregation server to: create a news aggregation service document based on a request received from a user, identify news content from a plurality of news source servers based on the received request, present the identified news content in the news aggregation service document, receive a request from the user to remove a news item from the news aggregation service document, remove the requested news item from the news aggregation service document based on the received request, to form an updated news aggregation service document, and present the updated news aggregation service document. 
     According to a further aspect, a news aggregation server is provided. The news aggregation server may include a memory configured to store instructions and news content and a processing unit to execute the instructions in memory to index news content from a number of news source servers, receive a request for a news aggregation service document from a user, aggregate news content from the memory based on the received request, where the news content includes a plurality of news items, present the aggregated news content to the user in the news aggregation service document, receive a request to remove a selected news item from the news aggregation service document, remove the selected news item from the news aggregation service document, retrieve a replacement news item from the memory, and present an updated news aggregation service document to the user, the updated news aggregation service document including the replacement news item. 
     According to yet another aspect consist with principles of the invention, a method may include aggregating news content from a news source server; ranking the aggregated news content; presenting the ranked, aggregated news content to a user; receiving a request to archive a news item from the aggregated news content; removing the requested news item from the aggregated news content to form updated aggregated news content; re-ranking the updated, aggregated news content based on the received archive request; and presenting the re-ranked, updated aggregated news content to the user. 
     According to still another aspect, a system may include a news aggregation server to index news content from a plurality of news source servers, receive a request for a news aggregation service document from a user, aggregate the indexed news content based on the received request, determine when a news item in the news content has been previously accessed by the user, remove the previously accessed news item from the aggregated news content, and presenting the aggregated, indexed news content to the user in the news aggregation service document. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, explain the invention. In the drawings, 
         FIG. 1  is a diagram of an overview of an implementation of the invention; 
         FIG. 2  is a diagram of an exemplary network in which systems and methods consistent with the principles of the invention may be implemented; 
         FIG. 3  is an exemplary diagram of a client and/or server of  FIG. 2  according to an implementation consistent with the principles of the invention; 
         FIGS. 4A and 4B  are flowcharts illustrating exemplary processing for creating and updating a news aggregation service document according to an implementation consistent with the principles of the invention; 
         FIG. 5  is a diagram of an exemplary news aggregation service document according to an implementation consistent with the principles of the invention; 
         FIG. 6  is a diagram of an exemplary news aggregation service document according to another implementation consistent with the principles of the invention; and 
         FIG. 7  is a diagram of an exemplary news aggregation service document according to yet another implementation consistent with the principles of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     The following detailed description of the invention refers to the accompanying drawings. The same reference numbers in different drawings may identify the same or similar elements. Also, the following detailed description does not limit the invention. 
     Consistent with principles of the invention, a news aggregation service may acknowledge previously viewed or undesirable news content. Additional available news content may be presented to the user based on the content of the previously viewed or undesirable news content. In this manner, news content provided by the news aggregation service remains persistently fresh and desirable. 
     A “document,” as the term is used herein is to be broadly interpreted to include any machine-readable and machine-storable work product. A document may include an e-mail, a web site, a file, a combination of files, one or more files with embedded links to other files, a news group posting, a news article, a blog, a web advertisement, etc. In the context of the Internet, a common document is a web page. Documents often include textual information and may include embedded information (such as meta information, images, hyperlinks, etc.) and/or embedded instructions (such as Javascript, etc.). 
     Overview 
       FIG. 1  illustrates an exemplary overview of an implementation of the invention that receives a user indication that a particular news content document has been previously viewed or accessed or is considered undesirable and, in response, provides a refreshed listing of news content for subsequent perusal. As shown in  FIG. 1 , an initial news aggregation service web document  100  may be presented to a user. News aggregation service web document  100  may be populated in response to a general news request, a specific news query, or in response to previously received news content customization criteria. Regardless of the manner of population, news aggregation service web document  100  may include a listing or set  105  of relevant news content documents. In one implementation, document set  105  may be broken down into news categories  110 , with each category  110  having one or more news content documents referenced within document set  105 . In an even more specific embodiment, a representative news content document  115  may be emphasized in document set  105 , followed by additional references  120  relating to news content documents relating to a similar topic. Representative news content document  115  as well as additional references  120  may include a headline and/or brief description of the relative document as well as a hyperlink to a complete copy of the document. 
     In accordance with principles of the invention, each representative news content document  115  may include an associated hyperlink  125  or other suitable user selection mechanism for receiving an indication (e.g., a “click”) that the user no longer wishes to view the particular document  115 . In response to a user selection of link  125 , a subsequent news aggregation service web document  130  may be presented to the user. As shown, document set  105  included within subsequent news aggregation service web document  130  no longer includes the document associated with the selected link  125 . Further, in one implementation consistent with principles of the invention, news content documents related to the document associated with the selected link  125  may also be removed from document set  105 . 
     Exemplary Network Configuration 
       FIG. 2  is an exemplary diagram of a network  200  in which systems and methods consistent with the principles of the invention may be implemented. Network  200  may include multiple clients  210  connected to one or more servers  220 - 230  via a network  240 . Two clients  210  and two servers  220 - 230  have been illustrated as connected to network  240  for simplicity. In practice, there may be more or fewer clients and servers. Also, in some instances, a client may perform one or more functions of a server and a server may perform one or more functions of a client. 
     Clients  210  may include client entities. An entity may be defined as a device, such as a personal computer, a wireless telephone, a personal digital assistant (PDA), a lap top, or another type of computation or communication device, a thread or process running on one of these devices, and/or an object executable by one of these devices. Servers  220  and  230  may include server entities that access, fetch, aggregate, process, search, and/or maintain documents in a manner consistent with the principles of the invention. Clients  210  and servers  220  and  230  may connect to network  240  via wired, wireless, and/or optical connections. 
     In an implementation consistent with the principles of the invention, server  220  may include a search engine  225  usable by users at clients  210 . Server  220  may implement a news aggregation service by crawling a corpus of news content documents (e.g., web pages) hosted on news source server(s)  230 , indexing the news content documents, and storing information associated with these news content documents in a repository of crawled documents. The news aggregation service may be implemented in other ways, such as by agreement with the operator(s) of news source server(s)  230  to distribute their news content documents via the news aggregation service. Search engine  225  may execute a search based on a query, received from a user at a client  210 , on the corpus of news documents stored in the repository of crawled documents. Server  220  may provide, to a user issuing the query, options to enable the user to remove or archive news content, as described below. 
     News source server(s)  230  may store or maintain news content documents that may be crawled by server  220 . Such news content documents may include recently published news stories, or older (i.e., not recent), archived news stories from any type of news source, such as, for example, the Washington Post, the New York Times, Time magazine, or Newsweek. 
     While servers  220 - 230  are shown as separate entities, it may be possible for one of servers  220 - 230  to perform one or more of the functions of the other one of servers  220 - 230 . For example, it may be possible that servers  220  and  230  are implemented as a single server. It may also be possible for a single one of servers  220  and  230  to be implemented as two or more separate (and possibly distributed) devices. 
     Network  240  may include one or more networks of any type, including a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a telephone network, such as the Public Switched Telephone Network (PSTN) or a Public Land Mobile Network (PLMN), an intranet, the Internet, a memory device, or a combination of networks. The PLMN(s) may further include a packet-switched sub-network, such as, for example, General Packet Radio Service (GPRS), Cellular Digital Packet Data (CDPD), or Mobile IP sub-network. 
     Exemplary Client/Server Architecture 
       FIG. 3  is an exemplary diagram of a client or server entity (hereinafter called “client/server entity”), which may correspond to one or more of clients  210  and/or servers  220 - 230 , according to an implementation consistent with the principles of the invention. The client/server entity may include a bus  310 , a processor  320 , a main memory  330 , a read only memory (ROM)  340 , a storage device  350 , an input device  360 , an output device  370 , and a communication interface  380 . Bus  310  may include a path that permits communication among the elements of the client/server entity. 
     Processor  320  may include a processor, microprocessor, or processing logic that may interpret and execute instructions. Main memory  330  may include a random access memory (RAM) or another type of dynamic storage device that may store information and instructions for execution by processor  320 . ROM  340  may include a ROM device or another type of static storage device that may store static information and instructions for use by processor  320 . Storage device  350  may include a magnetic and/or optical recording medium and its corresponding drive. 
     Input device  360  may include a mechanism that permits an operator to input information to the client/server entity, such as a keyboard, a mouse, a pen, voice recognition and/or biometric mechanisms, etc. Output device  370  may include a mechanism that outputs information to the operator, including a display, a printer, a speaker, etc. Communication interface  380  may include any transceiver-like mechanism that enables the client/server entity to communicate with other devices and/or systems. For example, communication interface  380  may include mechanisms for communicating with another device or system via a network, such as network  240 . 
     The client/server entity, consistent with the principles of the invention, may perform certain operations or processes, as will be described in detail below. The client/server entity may perform these operations in response to processor  320  executing software instructions contained in a computer-readable medium, such as memory  330 . A computer-readable medium may be defined as a physical or logical memory device and/or carrier wave. 
     The software instructions may be read into memory  330  from another computer-readable medium, such as data storage device  350 , or from another device via communication interface  380 . The software instructions contained in memory  330  may cause processor  320  to perform operations or processes that will be described later. Alternatively, hardwired circuitry may be used in place of or in combination with software instructions to implement processes consistent with the principles of the invention. Thus, implementations consistent with the principles of the invention are not limited to any specific combination of hardware circuitry and software. 
     Exemplary Processing 
       FIGS. 4A and 4B  are flowcharts of exemplary processing for creating and updating a news aggregation service document according to one implementation consistent with the principles of the invention. As one skilled in the art will appreciate, the processing exemplified by  FIGS. 4A and 4B  may be implemented in software and stored on a computer-readable memory, such as main memory  330 , ROM  340  or storage device  350  of server  220 . Alternatively, the processing exemplified by  FIGS. 4A and 4B  may be implemented in hardwired circuitry, such as combinational logic, within server  220 . 
     Turning to  FIG. 4A , processing may begin with server  220  accessing external news content (e.g., from server(s)  230 ), fetching the news content and aggregating the fetched news content (act  400 ). For example, server  220  may use a news crawler (e.g., a web robot) that may access news content documents hosted by news source server(s)  230 . News source server(s)  230  may host, for example, news content from the Washington Post, the New York Times, or other news content sites. The fetched news content may then be indexed and grouped, using conventional indexing and grouping algorithms (act  402 ). 
     Server  220  may then receive a user request for a news aggregation service document meeting one or more criteria (act  404 ). In one implementation, the received criteria may indicate that the user wishes to access a generalized news content page. Alternatively, the user request may include a query indicating certain keywords to be contained within the retrieved content to indicate the types of content desired by the user. Server  220  may then search the indexed news content based on the received request to identify news content meeting the submitted criteria (act  406 ). 
     In accordance with principles of the invention, it is then determined whether any identified news content matches news content previously accessed by the user or matches news content “removed” by the user from a previous version of the news aggregation service document (act  408 ). If so, the previously accessed or removed content, and possibly related news content, may be disregarded (act  410 ), and new content matching the user request may be retrieved from the identified news content (act  412 ). 
     If none of the identified news content has been previously accessed or removed, the process proceeds directly to act  414 , where the identified content is ranked based on various criteria, such as freshness, user preference, etc. In one implementation consistent with principles of the invention, indications regarding whether content was previously accessed or removed may be used to rank the identified content. For example, “removed” content may result in similar or related news content receiving a reduced ranking. Following ranking of the identified news content, headlines, snippets, images and/or links to the highest ranking matching content may be retrieved (act  416 ) and presented to the user in a news aggregation service document (act  418 ). 
       FIG. 5  is a diagram of an exemplary news aggregation service document  500  according to an implementation consistent with the principles of the invention. As with news aggregation service document  100  of  FIG. 1 , initial news aggregation service document  500  may include a set  502  of news content listings  504  matching the received criteria. In one exemplary implementation, news aggregation service document  500  may be a web page that includes a series of hypertext links  506  associated with the identified news content listings  504  as well as headlines  508 , snippets  510  and/or images  512  relating to listings  504 . Furthermore, news aggregation service document  500  may also include a number of categories  514 , and groupings  516  for displaying related news content listings together. 
     In addition to the above information, each news content listing  504 , category  514 , or grouping  516  provided on news aggregation service document  500  may also include a “remove” option  518  for enabling users to delete or otherwise remove the associated news content from news aggregation service document  500 . Upon selection of remove option  518 , as will be described in additional detail below, a subsequent news aggregation service document  500  may be provided that does not include the “removed” content. 
     Referring to  FIG. 4B , subsequent to presentation of an initial news aggregation service document  500 , the user&#39;s responsive actions may then be identified (act  420 ). In one alternative, the user may click on or otherwise select one of the news content links  506  provided on news aggregation service document  500  and thereby navigate away from news aggregation service document  500 . In this eventuality, server  220  may receive an indication from client  210  indicating the link  506  selected by the user as well as any relevant additional information, such as the time the selection was made, etc. (act  422 ). Server  220  may then store this indication in association with the user or with client  210  (act  424 ), so as to facilitate use of this information in accordance with the user&#39;s news viewing preferences, such as in act  408  described above. In this manner, previously accessed content may be removed from news aggregation service document  500  thereby increasing the “freshness” of the content. 
     Although described above as being stored on server  220 , it should be recognized that previously accessed news content indications may be stored at server  220 , at server  230 , or at client  210  associated with the user, or at some combination of server  220 , server  230 , or client  210 . To access such information, a “cookie,” or an identifier contained in a “cookie” that is, in turn, mapped to the stored information, may be used in some implementations consistent with the principles of the invention. Following storage of the previously accessed news content indication, the process may then return to act  404  for subsequent requests for the news aggregation service document. 
     In an alternative implementation, removal of previously accessed content may be performed following a predetermined period of time from the initial news content access. In this manner, users desiring to access related news content included within the same grouping as the previously accessed news content may still be provided with the grouping. Following expiration of the predetermined time period (e.g., 1 hour), the content may be removed from subsequent presentations of news aggregation service document  500 . 
     Returning to act  420 , server  220  may receive a user selection of “remove” option  518  relating to a news content listing  504 , category  514 , or grouping  516  (act  426 ). In response, server  220  may store an indication of the user selection of the remove option  518  (act  428 ). The process may then return to act  414  where the remaining news content documents may be ranked in view of the received removal request. As described above, in one implementation consistent with principles of the invention, removal of a news content document may result in reduced importance or relevance being placed on related or similar news content documents. 
       FIG. 6  is a diagram of another exemplary news aggregation service document  600  according to another implementation consistent with the principles of the invention. As with news aggregation service document  500  of  FIG. 5 , news aggregation service document  600  may include a set  602  of news content listings  604  matching the received criteria. Set  602  may include a series of hypertext links  606  associated with the identified news content listings  604  as well as headlines  608 , snippets  610  and/or images  612  relating to listings  604 . Furthermore, news aggregation service document  600  may also include a number of categories  614 , and groupings  616  for presenting related news content listings together. 
     In addition to the above information, each news content listing  604 , category  614 , or grouping  616  provided on news aggregation service document  600  may also include a “remove” option  618  and/or an “archive” option  620 . In accordance with principles of the invention, options  618  and  620  may be used to facilitate user-initiated refreshing of content listing  604 . Upon receipt of a user selection of remove option  618 , the system performs in a manner similar to that set forth above in  FIG. 4 . That is, the associated news content listing  604  is removed from news aggregation service document  600 , and its removal is reflected in the ranking of available news content documents. 
     Alternatively, upon receipt of a user selection of archive option  620 , the associated news content listing  604  is removed from news aggregation service document  600 . However, in this case, in contrast to the “remove” option described above, the removal of the document is not considered in subsequent ranking of available news content documents. In this manner, the removal of a news content listing  604  that is not currently of interest, but that remains of general interest to the user, does not impact subsequent document rankings. Furthermore, in accordance with an implementation consistent with principles of the invention, previously “archived” news content listings may be presented to the user upon receipt of a user selection of a “view archived content” option  622 . In this manner, news content listings  604  previously removed from news aggregation service document  600  may be re-presented to the user for subsequent selection. 
     In another implementation consistent with principles of the invention, news items may be removed or archived for a predetermined period of time. For example, upon selection of a suitable option (e.g., a “Remove for this session” option), a selected news item or grouping of news items may be removed from the news aggregation service document. Upon lapsing of the predetermined period of time, the removed stories may be re-inserted into the news aggregation service document. In this manner, news content may be customized in time, while enabling users to re-visit removed documents at a later time. In one example, the predetermined period of time may be a session time (where “session” may be defined as a sequence of queries or interactions by the same user). Other suitable time periods may include an hour, a day, etc. 
     In still another exemplary implementation consistent with principles of the invention, an “undo” option may be included for enabling users to undo or reverse recently performed removal or archiving operations. In one implementation, such an undo option would reverse the most recent listing removal selection. Alternatively, the undo option would reverse all removal operations during the current session. 
       FIG. 7  is a diagram of an exemplary news aggregation service document  700  according to another implementation consistent with the principles of the invention. As with news aggregation service documents  500  and  600  of  FIGS. 5 and 6 , respectively, news aggregation service document  700  may include a set  702  of news content listings  704  matching any received criteria. Set  702  may include a series of hypertext links  706  associated with the identified news content listings  704  as well as headlines  708 , snippets  710  and/or images  712  relating to listings  704 . Each news content listing  704  provided on news aggregation service document  700  may also include a “demote” option  718 . In accordance with principles of the invention, “demote” option  718  may be used to facilitate user-initiated re-sorting or re-ranking of set  702 . Upon receipt of a user selection of “demote” option  618 , the system may demote or otherwise reduce the ranking of the associated listing  704 . This may result in the listing  704  being removed from the set  702  presented to the user on news aggregation service document  700 . However, rather than eliminate the associated listing  704  from potential presentation, the listing is demoted in ranking. In this manner, subsequent requests for news content listings related to the associated listing would result in the re-presentation of listing  704 . In an additional implementation, demotion of the listing  704  may be considered during subsequent user requests for the news aggregation service document. 
     Conclusion 
     Systems and methods consistent with the principles of the invention may facilitate user interaction with a news aggregation service, to thereby improve the freshness and quality of the presented content. Based on user selections, presented news content listings or groups of listings may be removed from the presented content. Furthermore, user actions may be used to facilitate subsequent ranking and presentation of additional news content listings. 
     The foregoing description of preferred embodiments of the present invention provides illustration and description, but is not intended to be exhaustive or to limit the invention to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. For example, while series of acts have been described with regard to  FIGS. 4A and 4B , the order of the acts may be modified in other implementations consistent with the principles of the invention. Also, non-dependent acts may be performed in parallel. Additionally, although options relating to removal, archiving, and demotion have each been set forth in detail above, each of these options may be commonly referred to as “removing” news listings, for the purposes of the invention. 
     It will also be apparent to one of ordinary skill in the art that aspects of the invention, as described above, may be implemented in many different forms of software, firmware, and hardware in the implementations illustrated in the figures. The actual software code or specialized control hardware used to implement aspects consistent with the principles of the invention is not limiting of the present invention. Thus, the operation and behavior of the aspects of the invention were described without reference to the specific software code—it being understood that one of ordinary skill in the art would be able to design software and control hardware to implement the aspects based on the description herein. 
     No element, act, or instruction used in the description of the invention should be construed as critical or essential to the invention unless explicitly described as such. Also, as used herein, the article “a” is intended to include one or more items. Where only one item is intended, the term “one” or similar language is used. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise
A system customizes a news document associated with a user of a news aggregation service. The system includes a remote news aggregation server configured to create a news aggregation service document based on a request received from the user. The remote news aggregation server identifies news content from a plurality of news source servers based on the received request and presents the identified news, content in the news aggregation service document. The remote news aggregation server is further configured to receive a request from the user to remove a news item from the presented news content and removing the requested news item from the identified news content. Updated news content is presented in an updated news aggregation service document.