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{scrollbar:icons=false} h1. {page-info:title} {multi-excerpt:name=UseofBrowsers}The next several sections analyze available statistics for direct use of EVS resources on EVS servers. This section covers direct use of NCI-hosted EVS terminology browsers and the LexEVS local java API that supports them. Later sections cover the LexEVS distributed (remote), LexEVS caGrid services, the term suggestion site, and ftp download services. {toc:minLevel=2} The EVS browsers and LexEVS APIs at NCI are covered by the AWStats and Wusage applications, recording various statistics including number of unique visitors, visits, number of pages viewed and data volume accessed. These have been collected below to give a window into the use of the EVS services. Appendix 1 lists the usage tracking pages from which these statistics are gathered. While we cannot currently identify and exclude many web crawler and similar hits, detailed examination of addresses and patterns of use suggest that the bulk of use reported below represents real users from NCI and other organizations of interest. Analyzed below are figures for unique visitors and number of visits, as well as the volume of data communicated, which for all but ftp sites reflects high volumes of traffic in mostly compact units of terminology concept data. h2. Statistical Overview The EVS browsers run off the LexEVS local API, and provide the highest number of direct users of EVS terminology servers. The lowest, but most informative, numbers are for unique visitors and number of visits. The number of visitors to the EVS family of browsers has averaged between 5,000 and 6,000 per month over the past year, generating a total number of visits of between 13,000 and 17,000 per month. {color:#002060}{*}Unique visitors to EVS browsers, per month{*}{color} !BrowserVisitors.JPG|border=1,alt="Chart showing unique visitors to EVS browsers per month"! {quote} *Key* || Abbreviation || Site || | NCITerms | NCI Term Browser (many terminologies, value sets and mappings) | | NCIt | NCI Thesaurus Browser (now one face of NCITerms, counted separately) | | NCIm | NCI Metathesaurus Browser (separate app, searchable from NCITerms) | | TermForm | EVS Term Suggestion site (covered later) | {quote} {color:#002060}{*}Number of visits to EVS browsers, per month{*}{color}  !BrowserVisits.JPG|border=1,alt="Chart showing number of visits to EVS browsers per month"! h2. Browser Users The EVS browsers see a large volume of usage each month, therefore only one month was chosen for analysis. The data below is from January 2012 through March 2012, the last full month for which we have data. It shows an overall view of which domains hit us most heavily, and then breaks down each domain by top users. All browsers are put together for this analysis as they all use the same API for drawing data and have a similar user base. h3. Overall Use The amount of bandwidth used was divided into four (4) major groups: Government .gov users, private .com and .net users, Educational .edu institutions, and Organizations .org. The data was analyzed and bots were discarded to avoid skewing the data. {color:#002060}{*}Data accessed (MB) from EVS browsers by domain{*}{color} || Domain || MB || | gov | {align:right}5865{align} | | edu \\ | {align:right}4312{align} | | com/ net | {align:right}1239{align} | | org | {align:right}227{align} | \\ {color:#002060}{*}Data accessed (MB) from EVS browsers by domain{*}{color} !BrowserMBbyDomain.JPG|border=1,alt="Chart showing data accessed (MB) from EVS browsers by domain"! h3. Users from .gov domain The numbers below show the top government users of the EVS browsers, as measured by the MB of data that were accessed. Agency names have been provided where they are known. {color:#002060}{*}Top 10 non-CBIIT .gov EVS browser users: Data accessed (MB)*{color} || Organization || MB || NIH-NCI 4530.38 NIH 1160.11 FDA 82.61 California Department of Health Care Services 22.00 NIH-OD 12.03 NIH-NIDDK 9.19 NIH-NHGRI 5.95 Social Security Administration 5.93 NIH-NLM 5.55 NIH-CIT 4.64 NIH-NIMH Total 4.05 NIH-NIDA 4.01 NIH-OD, Office of Research Services 3.92 Unknown Total 3.54 NIH-Clinical Center 2.96 Government of Alberta, Canada 2.26 NIH-NEI 2.01 NIH-NHLBI 1.59 {color:#002060}{*}Top 10 non-CBIIT .gov EVS browser users: Data accessed (MB)*{color} !GovBrowserUsers.JPG|border=1,alt="Chart showing top 10 non-CBIIT .gov EVS browser users: data accessed"! h3. Users from .com domain We combined the .net and .com users into one group as both contained a number of private corporations. and individual users from a wide variety of ISPs (labeled as Individual ISPs). Business names have been provided where known. The graph below excludes the ISPs and Lockheed Martin as they dwarf the next largest group. {color:#002060}{*}Top .com EVS browser users: Data accessed (MB)*{color} || Business || MB || | ISP | 526.09 | | Lockheed Martin | 184.64 | | Walgreens | 74.32 | | Johnson and Johnson | 37.63 | | IBM Rochester | 37.53 | | Ingenuity Systems | 35.03 | | Kai Reseach | 29.52 | | IBM Watson Research Center | 23.41 | | Booz Allen Hamilton | 21.36 | | Amgen | 17.55 | | PAREXEL International | 16.62 | | Genentech | 16.40 | | McKesson | 16.28 | | Virtual Radiologic | 13.82 | | Bristol-Myers Squibb | 12.77 | | Roche | 11.88 | | Intelrad | 10.15 | | SHARP San Diego Health Care | 10.02 | | SAIC | 9.77 | | Intuit | 9.77 | {color:#002060}{*}Top 10 .com EVS browser users: Data accessed (MB)*{color} !ComBrowserUsers.JPG|border=1,alt="Chart showing top .com EVS browser users: Data accessed"! h3. Users from .edu domain The edu users were widely distributed across many American universities and a small selection of foreign institutions. {color:#002060}{*}Top 10 .edu EVS browser users: Data accessed (MB)*{color} || Institution || MB || | San Diego Supercomputer Center | {align:right}53{align} | | Mayo Clinic | {align:right}42{align} | | Columbia University Medical Center | {align:right}8{align} | | University of Utah | {align:right}7{align} | | Vanderbilt University | {align:right}6{align} | | University of Southern California | {align:right}4{align} | | University of Pittsburgh Medical Center | {align:right}2{align} | | University of Minnesota | {align:right}2{align} | | University of Michigan Health System | {align:right}1{align} | | Ohio State University Medical Center | {align:right}1{align} | {color:#002060}{*}Top 10 .edu EVS browser users: Data accessed (MB) \[Mayo truncated\]*{color} !EduBrowserUsers.JPG|border=1,alt="Chart showing top 10 .edu EVS browser users: Data accessed (MB) Mayo truncated"! h3. Users from .org domain Like the .edu users, the .org users were widely distributed across a variety of organizations. {color:#002060}{*}Top 10 .org EVS browser users: Data accessed (MB)*{color} || Organization || MB || | Partners HealthCare | {align:right}16{align} | | RTI International | {align:right}7{align} | | Fred Hutchinson Cancer Research Center | {align:right}5{align} | | The National Marrow Donor Program | {align:right}4{align} | | Bioanalysis Institutes - U.S. Army | {align:right}4{align} | | Sloan-Kettering | {align:right}4{align} | | Gynecologic Oncology Group | {align:right}3{align} | | Broad Institute of MIT and Harvard | {align:right}3{align} | | American College of Cardiology | {align:right}2{align} | | Gundersen Lutheran Health System | {align:right}1{align} | {color:#002060}{*}Top 10 .org EVS browser users: Data accessed (MB)*{color} !OrgBrowserUsers.JPG|border=1,alt="Chart showing top 10 .org EVS browser users: data accessed"! {multi-excerpt} {scrollbar:icons=false}| NIH-NCI | 4530.38 | | NIH | 1160.11 | | FDA | 82.61 | | California Department of Health Care Services | 22.00 | | NIH-OD | 12.03 | | NIH-NIDDK | 9.19 | | NIH-NHGRI | 5.95 | | Social Security Administration | 5.93 | | NIH-NLM | 5.55 | | NIH-CIT | 4.64 | | NIH-NIMH Total | 4.05 | | NIH-NIDA | 4.01 | | NIH-OD, Office of Research Services | 3.92 | | Unknown Total | 3.54 | | NIH-Clinical Center | 2.96 | | Government of Alberta, Canada | 2.26 | | NIH-NEI | 2.01 | | NIH-NHLBI | 1.59 |
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MultiExcerptNameUseofBrowsers

The next several sections analyze available statistics for direct use of EVS resources on EVS servers. This section covers direct use of NCI-hosted EVS terminology browsers and the LexEVS local java API that supports them. Later sections cover the LexEVS distributed (remote), LexEVS caGrid services, the term suggestion site, and ftp download services.

Table of Contents
minLevel2

The EVS browsers and LexEVS APIs at NCI are covered by the AWStats and Wusage applications, recording various statistics including number of unique visitors, visits, number of pages viewed and data volume accessed. These have been collected below to give a window into the use of the EVS services. Appendix 1 lists the usage tracking pages from which these statistics are gathered.

We are now able to identify and exclude most web crawler and similar automated hits, as well as internal use for testing and development purposes. Detailed examination of addresses and patterns of use suggest that the use reported below overwhelmingly represents real users from NCI and other organizations of interest. Analyzed below are figures for unique visitors and number of visits, as well as the volume of data communicated, which for all but ftp sites reflects high volumes of traffic in mostly compact units of terminology concept data.

Statistical Overview

The EVS browsers run off the LexEVS local API, and provide the highest number of direct users of EVS terminology servers. The lowest, but most informative, numbers are for unique visitors and number of visits. The number of unique visitors to the EVS family of browsers has averaged around 4,000 per month in 2015, growing to around 10,000 per month by the end of 2016 generating some 17,000 visits.

Unique visitors to EVS browsers, per month
Chart showing unique visitors to EVS browsers per monthImage Added

Key

Abbreviation

Site

NCITerms

NCI Term Browser (many terminologies, value sets and mappings)

NCIt

NCI Thesaurus Browser (now one face of NCITerms, counted separately)

NCIm

NCI Metathesaurus Browser (separate app, searchable from NCITerms)

TermForm

EVS Term Suggestion site (covered later)


Number of visits to EVS browsers, per month 
Chart showing number of visits to EVS browsers per monthImage Added

Browser Users

The data below is from January - December 2020. It shows an overall view of which internet domains hit EVS browsers most heavily, and then breaks down each domain by top users. All browsers are put together for this analysis.

Overall Use

The amount of bandwidth used was divided into four (4) major groups: Government .gov users, private .com and .net users, Educational .edu institutions, and Organizations .org. The data was analyzed and bots were discarded to avoid skewing the data.

Data accessed (MB) from EVS browsers by domain

Domain

MB

org

87151

com

39280

gov

2052

edu

410

Data accessed (MB) from EVS browsers by domain
Chart showing data access(MB) from EVS browsers by domainImage Added

Usage Patterns of the Three EVS Browsers

The three browsers offered by EVS are

NCITermsNCI Term Browser: Access to all terminologies, value sets and mappings.
NCItNCI Thesaurus Browser: Now just one face of NCITerms, but the most used and counted separately.
NCImNCI Metathesaurus Browser: A separate application, searchable from NCITerms.

broswer usage pie chartImage Added

Nearly 75% of all use goes to the NCIt browser, including almost all use from the educational domain and two thirds of government use.  By contrast, half of commercial domain use goes to NCI Terms, while .org use is almost evenly split between all three browsers.

dot com browser usage pie chartImage Added  dot edu browser usage pie chartImage Added dot gov browser usage pie chartImage Added dot org browser usage pie chartImage Added