MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/01/00 through 11/30/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 604 1,172 1,776
Davis 553 32 585
Irvine 554 0 554
Los Angeles 204 596 800
Riverside 157 150 307
San Diego 56 395 451
San Francisco 228 0 228
Santa Barbara 73 246 319
Santa Cruz 115 139 254
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 18 195 213
Other-Network UC n/a 621 621
_______ ______ _____
2,562 3,546 6,108
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 70 296 2,222
2-4 a.m. 25 78 999
4-6 a.m. 28 123 1,061
6-8 a.m. 103 422 2,335
8-10 a.m. 556 1,935 18,013
10-12 a.m. 1,045 3,936 40,864
12-2 p.m. 1,105 4,394 51,683
2-4 p.m. 1,286 5,334 54,502
4-6 p.m. 939 3,882 42,693
6-8 p.m. 443 1,930 20,542
8-10 p.m. 348 1,467 15,730
10-12 p.m. 160 691 10,111
__________ __________ __________ _________________
Total: 6,108 24,488 260,755
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,642 5,214 7,856
Davis 2,243 116 2,359
Irvine 2,323 0 2,323
Los Angeles 949 2,095 3,044
Riverside 684 608 1,292
San Diego 159 1,485 1,644
San Francisco 840 0 840
Santa Barbara 320 926 1,246
Santa Cruz 473 591 1,064
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 48 706 754
Other-Network UC n/a 2,066 2,066
_______ ______ _____
10,681 13,807 24,488
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 30,669 59,608 90,277
Davis 19,717 663 20,380
Irvine 23,941 0 23,941
Los Angeles 15,423 24,233 39,656
Riverside 5,249 5,804 11,053
San Diego 714 14,826 15,540
San Francisco 10,025 0 10,025
Santa Barbara 2,747 9,845 12,592
Santa Cruz 5,098 5,894 10,992
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 579 7,621 8,200
Other-Network UC n/a 18,099 18,099
_______ ______ _____
114,162 146,593 260,755
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:00
Average session length (minutes:seconds) 13:29
Longest session recorded (minutes:seconds) 441:50
Average number of searches completed per session 4.0
Retrievals per search - median 10.0
Retrievals per search - average 955.3
Retrievals per search - standard deviation 7686.2
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 63.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 21,879 28.4%
DISPLAY (excluding automatic displays) 32,943 42.8%
BROWSE 172 0.2%
SELECT 70 0.1%
HELP 1,393 1.8%
EXPLAIN 1,452 1.9%
SET/RESET 1,564 2.0%
SHOW 382 0.5%
ADD ON (AND, OR, AND NOT) 2,591 3.4%
LOGON or LOGOFF 9,393 12.2%
COMMENT 1 0.0%
SAVE 2,984 3.9%
USE 12 0.0%
OTHER 2,439 3.2%
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 AUTHOR 8,735 36.3% 1,635 18.7% 16 66.0 205.1
TITLE WORD 3,074 12.8% 862 28.0% 7 124.5 912.3
EXACT TITLE 276 1.1% 112 40.6% 2 31.5 115.4
JOURNAL 531 2.2% 176 33.1% 505 4569.5 17804.9
EXACT JOURNAL 293 1.2% 72 24.6% 472 1751.8 3070.0
SUBJECT 2,923 12.1% 1,584 54.2% 711 5670.2 13355.2
EXACT SUBJECT 135 0.6% 48 35.6% 393 4169.8 9530.5
KEYWORD 6,222 25.8% 859 13.8% 68 2111.2 13519.9
FORM/PUB TYPE 97 0.4% 13 13.4% 46 990.0 3925.3
DATE 956 4.0% 108 11.3% 5 35.4 147.3
ADDED 13 0.1% 12 92.3% 1 1.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 22 0.1% 10 45.5% 230 2873.5 8077.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 49 0.2% 6 12.2% 109 314.0 661.1
ISSN 1 0.0% 0 0.0% 138 138.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 2 0.0% 2 100% 0 0.0 0.0
PERIODICAL 529 2.2% 129 24.4% 3 426.3 5757.0
EXACT PE 46 0.2% 8 17.4% 2 41.8 196.3
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 172 0.7% 33 19.2% 84 659.8 3584.2
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 2,372 11.0% 524 22.1% 6 148.1 1287.6
Single 19,253 89.0% 4,607 23.9% 39 1495.5 9770.3
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
SUBJECT 161 93.6% 47 29.2% 2 3.8 7.0
EXACT SUBJECT 11 6.4% 2 18.2% 1 1.9 1.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 91.1%
LONG 0.9%
TAGS 0.1%
FIELDS 1.5%
BROWSE REVIEW 0.3%
BROWSE LONG 0.2%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. First word of command is invalid 31.4%
2. NS command - no next screen 29.8%
3. FIND command with invalid index name 9.4%
4. PS command - no previous screen 7.0%
5. DISPLAY command contains invalid word 4.2%
6. Search term missing from search command 2.2%
7. Valid command at an inappropriate time 2.2%
8. NS of SHOW/EXP command-no next screen 1.4%
9. Add-on search, no index name after verb 1.1%
10. BROWSE command with invalid index name 0.9%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 36.0%
2. GUIDE 20.7%
3. FIND (PSY DB) 7.6%
4. COMMANDS (ABI/PSY DBS) 5.6%
5. Unrecognized term 4.1%
6. INDEXES (PSY DB) 4.0%
7. ADDON SEARCH 3.3%
8. DISPLAY (INS/PSY DBS) 3.0%
9. MAIL 2.1%
10. FIND LOCATION 1.0%
11. All others 12.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.0%
2. First word of command is invalid 16.3%
3. FIND command with invalid index name 9.0%
4. DISPLAY command-first of >1 screen 8.5%
5. DISPLAY command-complete in one screen 6.2%
6. DISPLAY command - middle of >1 screen 5.9%
7. FIND command with zero results 5.3%
8. FIND command retrieves >1 book 4.9%
9. DISPLAY command - last of >1 screen 3.4%
10. NS command - no next screen 2.7%
11. All others 17.9%
Ten most frequent SHOW requests:
1. SEARCH 44.4%
2. HISTORY 38.2%
3. PSYCINFO NEWS 6.2%
4. MAIL STATUS 3.0%
5. SETTINGS (INS/PSY DBS) 2.1%
6. GLOSSARY 1.5%
7. MAIL SETTINGS 1.5%
8. SYSTEM NEWS 0.9%
9. DISPLAY (MED/INS/PSY DBS) 0.9%
10. PSYCINFO STATISTICS 0.3%
11. All others 1.2%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)