MELVYL MEDLINE DATABASES TELNET STATISTICS
Time period: 12/29/01 through 01/04/02
1.0 SUMMARY STATISTICS
_______________________
Sessions: Medical/Health/
Life Sciences All Other
Libraries Libraries Remote Total
_______________ _________ _________ _________
Berkeley 0 0 7 7
Davis 0 66 1 67
Irvine 0 25 0 25
Los Angeles 0 1 2 3
Riverside 0 0 1 1
San Diego 72 38 2 112
San Francisco 0 0 174 174
Santa Barbara 0 0 0 0
Santa Cruz 0 0 1 1
Stanford 8
Other (including DLA) 0 0 215 215
_______________ _________ _________ _________
Total: 72 130 403 613
Relative use of MEDLINE databases
Number of Number of Number of
Sessions FIND commands Records Displayed
________ _____________ _________________
MED (current) 448 1,508 17,961
MED90 database 55 109 1,646
MED85 database 43 74 919
MED80 database 31 52 712
MED75 database 24 56 415
MED66 database 12 20 325
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 46 352
2-4 a.m. 28 107 1,213
4-6 a.m. 15 51 177
6-8 a.m. 43 98 2,040
8-10 a.m. 45 96 1,502
10-12 a.m. 72 214 1,791
12-2 p.m. 109 312 2,688
2-4 p.m. 133 473 5,841
4-6 p.m. 44 180 3,055
6-8 p.m. 25 52 604
8-10 p.m. 43 111 1,296
10-12 p.m. 41 79 1,419
__________ __________ __________ _________________
Total: 613 1,819 21,978
Session length (minutes:seconds):
Medical/Health/
Life Sciences All Other
Libraries Libraries Remote Total
_______________ _________ _________ _________
Assist:
Average 0.0 0.0 0.0 0:00
Median 0.0 0.0 0.0 0:00
Command:
Average 15:24 21:06 17:18 16:00
Median 10:12 8:14 17:18 6:15
Total:
Average 15:24 21:06 17:18 16:00
Median 10:12 8:14 17:18 6:15
Response time (in seconds): Std.
Avg. Dev.
______ ______
Search - from receipt of command at DLA until 0.5 1.0
transmission of response
Display - from receipt of command at DLA until 0.1 0.1
transmission of a complete screen
Use of Assist vs Command mode: Number of Percentage of
Sessions Searches
_________ _____________
Assist mode 0 0.0%
Command mode 613 100%
E MED option:
E MED chosen from Welcome screen 0
E MED chosen from Assist screens 0
Specific screens chosen from within E MED:
Master Menu 0
FIND command 0
FIND command examples 0
DISPLAY command 0
DISPLAY command - other options 0
BROWSE command 0
BROWSE DISPLAY options 0
SELECT command 0
Assistance commands 0
START and END commands 0
Other commands 0
Combine commands 0
SHOW HISTORY command 0
SAVE command 0
COMMENT command 0
2.0 ASSIST MODE
________________
Assist mode sessions as: % of Campus
% of Total MELVYL MEDLINE
Assist Sessions Sessions
_______________ ______________
Berkeley 0.0% 0.0%
Davis 0.0% 0.0%
Irvine 0.0% 0.0%
Los Angeles 0.0% 0.0%
Riverside 0.0% 0.0%
San Diego 0.0% 0.0%
San Francisco 0.0% 0.0%
Santa Barbara 0.0% 0.0%
Santa Cruz 0.0% 0.0%
Stanford 0.0% 0.0%
Other 0.0% 0.0%
% of Group
% of Total MELVYL MEDLINE
Assist Sessions Sessions
_______________ ______________
Medical/Health/Life Sciences 0.0% 0.0%
All Other Libraries 0.0% 0.0%
Remote 0.0% 0.0%
SEARCH information:
Average number of searches completed per session 0.0
Retrievals per search - average 0.0
Retrievals per search - median 0.0
Retrievals per search - standard deviation 0.0
Percent of searches completed with 0 results 0.0%
COMMANDS entered, by type, excluding errors:
% of all
Total Commands
__________ __________
FIND 0 0.0%
DISPLAY (excluding automatic displays) 0 0.0%
BROWSE SU 0 0.0%
SELECT 0 0.0%
HELP 0 0.0%
SAVE 0 0.0%
ADD-ON (AND, OR) 0 0.0%
LOGON or LOGOFF 0 0.0%
FINDS completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 0 0.0% 0 0.0% 0 0.0 0.0
LIMITS:
Number of times limits (bit strings) used: 0
Use by bit string (percentage):
Current year 0.0%
English Language 0.0%
XS Aged 0.0%
XS Animal 0.0%
XS Case Report 0.0%
XS Child 0.0%
XS Female 0.0%
XS Human 0.0%
XS Male 0.0%
PT Review 0.0%
BOOLEAN:
Number of searches with Booleans: 0
(FIND, BROWSE, SELECT, ADD-ON)
Percentage of ANDs 0.0%
Percentage of ORs 0.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
BRIEF 0.0%
LONG 0.0%
TITLE/SUBJECT 0.0%
3.0 COMMAND MODE
________________
SEARCH information:
Average number of searches completed per session 3.0
Retrievals per search - average 666.4
Retrievals per search - median 7.0
Retrievals per search - standard deviation 4551.3
Percent of searches completed with 0 results 24.7%
Percent of searches entered that are long 0.3%
Percent of long searches completed 100%
COMMANDS entered, by type, excluding errors:
% of all
Total Commands
__________ __________
FIND 1,484 26.0%
DISPLAY (excluding automatic displays) 2,152 37.7%
BROWSE 5 0.1%
SELECT 3 0.1%
HELP 6 0.1%
EXPLAIN 14 0.2%
SAVE 536 9.4%
SET/RESET 252 4.4%
SHOW 12 0.2%
ADD-ON (AND, OR, AND NOT) 318 5.6%
LOGON or LOGOFF 748 13.1%
COMMENT 0 0.0%
OTHER 174 3.1%
FINDS completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_______________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
________ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 617 30.2% 112 18.2% 15 93.6 410.1
TITLE WORD 267 13.1% 120 44.9% 9 598.2 2597.3
EXACT TITLE 1 0.0% 1 100% 0 0.0 0.0
JOURNAL 53 2.6% 14 26.4% 13 287.2 1403.8
EXACT JOURNAL 16 0.8% 5 31.3% 9 1162.8 2722.5
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 835 40.9% 202 24.2% 27 1444.1 7137.3
SUBJECT WORD 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 54 2.6% 12 22.2% 5 715.2 4027.1
MAJOR SUBJECT 1 0.0% 0 0.0% 1,493 1493.0 0.0
EXACT SUBJECT 24 1.2% 18 75.0% 56 8415.8 19788.4
MAJOR XS 0 0.0% 0 0.0% 0 0.0 0.0
EXPLODE XS 1 0.0% 0 0.0% 12,103 12103.0 0.0
EXPLODE MAJOR 0 0.0% 0 0.0% 0 0.0 0.0
TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
MAJOR TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 102 5.0% 38 37.3% 5 105.7 249.6
LANGUAGE 40 2.0% 3 7.5% 242 1135.1 0.0
PUB TYPE 5 0.2% 6 120% 54 397.5 589.4
Other indexes 2 0.1% 2 100% 0 0.0 0.0
By number of indexes:
Multiple 533 29.6% 138 25.9% 10 294.2 1869.5
Single 1,268 70.4% 309 24.4% 28 1141.8 6111.6
BROWSES completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 5 100% 0 0.0% 2 3.8 3.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
TREE NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 5 100% 0 0.0% 2 3.8 3.3
LIMITS:
Number of times limits (bit strings) used: 114
Use by bit string (percentage):
Current year minus 5 23.7%
Current year minus 4 0.0%
Current year minus 3 0.9%
Current year minus 2 0.9%
Current year minus 1 0.9%
Current year 1.8%
English Language 33.3%
French Language 0.0%
Japanese Language 0.0%
German Language 0.0%
Russian Language 0.0%
XS Abstract 2.6%
XS Adolescence 0.0%
XS Adult 0.0%
XS Aged 0.0%
XS Animal 0.0%
XS Case Report 0.0%
XS Child 0.0%
XS Comparative Studies 0.0%
XS English Abstract 0.0%
XS Female 0.0%
XS Human 11.4%
XS Infant 0.0%
XS Infant, Newborn 0.0%
XS Male 0.0%
XS Mice 0.0%
XS Middle Age 5.3%
XS Rats 0.0%
XS Support Non-U.S. Govt 0.0%
XS Support U.S. Govt, Non-P.H.S. 0.0%
XS Support U.S. Govt, P.H.S. 0.0%
PT Review 19.3%
PT Journal Article 0.0%
SUBSET AIM 0.0%
SUBSET Indexing priority 1,2 0.0%
SUBSET Nursing journals 0.0%
SUBSET Dental journals 0.0%
SUBSET Cancer core journals 0.0%
BOOLEAN:
Number of searches with Booleans: 591
(FIND, BROWSE, SELECT, ADD-ON)
Percentage of ANDs 96.3%
Percentage of ORs 2.9%
Percentage of AND NOTs 0.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
BRIEF 68.1%
LONG 0.9%
MEDLINE 0.5%
FIELDS 1.1%
PERIODICALS 0.0%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
BROWSE FIELDS 0.0%
BROWSE MEDLINE 0.0%
Other 26.0%
4.0 Error, EXPLAIN, HELP statistics (ASSIST & COMMAND)
_______________________________________________________
Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 40.5%
2. First word of command is invalid 23.5%
3. DISPLAY command - no FIND results 5.6%
4. FIND command with invalid index name 4.8%
5. DISPLAY command contains invalid word 4.6%
6. Add-on search with invalid index name 2.5%
7. DISPLAY command-record numbers too large 2.1%
8. Search term missing from search command 1.5%
9. DISPLAY LIST command with no LIST 1.5%
10. BROWSE command with invalid index name 0.8%
11. All others 12.7%
Ten most frequent EXPLAIN requests:
1. BOOKS DATABASE 28.6%
2. INDEXES 14.3%
3. A059 7.1%
4. MAIL 7.1%
5. Unrecognized term 7.1%
6. SAVE 7.1%
7. DATABASES 7.1%
8. 3207 7.1%
9. SETTINGS 7.1%
10. 3730 7.1%
11. All others 5.0%
Ten most frequent HELP situations:
1. 244 20.0%
2. Command mode selected from Welcome 20.0%
3. 848 15.0%
4. DISPLAY command - last of >1 screen 10.0%
5. First word of command is invalid 5.0%
6. MELVYL system could not process command 5.0%
7. 14 5.0%
8. 121 5.0%
9. DISPLAY command-first of >1 screen 5.0%
10. Multi-index search with zero results 5.0%
11. All others 0.0%
Ten most frequent SHOW requests:
1. HISTORY 90.0%
2. SEARCH 10.0%
11. All others 0.0%
MEDmm/dd med MELVYL MEDLINE DATABASES TELNET STATISTICS (weekly)