MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/01/02 through 04/30/02
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 121 589 710
Davis 471 6 477
Irvine 173 0 173
Los Angeles 7 389 396
Riverside 11 100 111
San Diego 49 278 327
San Francisco 78 0 78
Santa Barbara 25 81 106
Santa Cruz 6 112 118
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 148 151
Other-Network UC n/a 503 503
_______ ______ _____
944 2,206 3,150
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 33 109 1,147
2-4 a.m. 66 1,044 3,482
4-6 a.m. 18 50 543
6-8 a.m. 59 144 791
8-10 a.m. 328 993 7,214
10-12 a.m. 569 2,090 17,498
12-2 p.m. 541 1,836 28,612
2-4 p.m. 662 2,364 21,171
4-6 p.m. 461 1,796 17,796
6-8 p.m. 193 880 9,424
8-10 p.m. 127 508 5,361
10-12 p.m. 93 366 2,867
__________ __________ __________ _________________
Total: 3,150 12,180 115,906
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 375 2,063 2,438
Davis 2,527 20 2,547
Irvine 610 0 610
Los Angeles 27 1,886 1,913
Riverside 14 532 546
San Diego 79 803 882
San Francisco 200 0 200
Santa Barbara 45 260 305
Santa Cruz 18 542 560
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 559 567
Other-Network UC n/a 1,612 1,612
_______ ______ _____
3,903 8,277 12,180
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,178 18,333 21,511
Davis 16,454 36 16,490
Irvine 4,131 0 4,131
Los Angeles 200 22,368 22,568
Riverside 286 3,219 3,505
San Diego 1,236 18,178 19,414
San Francisco 1,897 0 1,897
Santa Barbara 244 3,258 3,502
Santa Cruz 50 5,423 5,473
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 38 5,524 5,562
Other-Network UC n/a 11,853 11,853
_______ ______ _____
27,714 88,192 115,906
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 0.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 6:42
Average session length (minutes:seconds) 12:28
Longest session recorded (minutes:seconds) 499:35
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 797.1
Retrievals per search - standard deviation 7152.1
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 63.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,002 32.0%
DISPLAY (excluding automatic displays) 13,739 40.0%
BROWSE 24 0.1%
SELECT 5 0.0%
HELP 363 1.1%
EXPLAIN 317 0.9%
SET/RESET 914 2.7%
SHOW 90 0.3%
ADD ON (AND, OR, AND NOT) 1,178 3.4%
LOGON or LOGOFF 4,782 13.9%
COMMENT 0 0.0%
SAVE 1,015 3.0%
USE 3 0.0%
OTHER 953 2.8%
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 5,088 37.0% 1,075 21.1% 14 58.1 184.9
TITLE WORD 1,255 9.1% 377 30.0% 7 161.7 1331.2
EXACT TITLE 206 1.5% 77 37.4% 2 41.0 122.1
JOURNAL 200 1.5% 59 29.5% 319 1986.7 4327.3
EXACT JOURNAL 132 1.0% 46 34.8% 242 1246.1 2549.5
SUBJECT 745 5.4% 393 52.8% 909 6575.0 14332.4
EXACT SUBJECT 1,009 7.3% 684 67.8% 2 59.4 400.5
KEYWORD 2,456 17.8% 374 15.2% 38 2584.7 14831.6
FORM/PUB TYPE 55 0.4% 5 9.1% 38 163.7 296.2
DATE 1,671 12.1% 803 48.1% 3 49.0 400.1
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 5 0.0% 0 0.0% 21 489.6 653.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 18 0.1% 4 22.2% 31 270.6 598.8
ISSN 3 0.0% 1 33.3% 285 285.0 366.3
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 27 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 258 1.9% 52 20.2% 6 282.1 1620.5
EXACT PE 40 0.3% 4 10.0% 3 22.5 50.6
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 590 4.3% 315 53.4% 3 282.2 2354.6
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 2,263 20.9% 976 43.1% 4 56.6 410.3
Single 8,577 79.1% 1,975 23.0% 26 1291.3 9173.1
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 21 87.5% 5 23.8% 2 4.2 4.8
EXACT SUBJECT 3 12.5% 1 33.3% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 88.0%
LONG 1.0%
TAGS 1.1%
FIELDS 3.9%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 27.8%
2. First word of command is invalid 23.7%
3. DISPLAY command - no FIND results 18.6%
4. FIND command with invalid index name 8.8%
5. PS command - no previous screen 4.5%
6. DISPLAY command contains invalid word 2.6%
7. Search term missing from search command 2.3%
8. Valid command at an inappropriate time 1.8%
9. NS of SHOW/EXP command-no next screen 1.1%
10. Command contains escape or arrow key 1.1%
11. All others 7.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.9%
2. LOCATE (INS/PSY DBS) 26.2%
3. FIND (PSY DB) 9.1%
4. COMMANDS (ABI/PSY DBS) 3.5%
5. INDEXES (PSY DB) 3.5%
6. DATABASES 3.2%
7. Unrecognized term 2.8%
8. SEARCH (PSY DB) 2.5%
9. FIND LOCATION 2.2%
10. ADDON SEARCH 1.6%
11. All others 13.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.5%
2. First word of command is invalid 17.5%
3. FIND command with invalid index name 9.0%
4. DISPLAY command-first of >1 screen 7.8%
5. FIND command with zero results 7.2%
6. DISPLAY command - middle of >1 screen 6.8%
7. DISPLAY command - last of >1 screen 3.8%
8. DISPLAY command-complete in one screen 2.9%
9. FIND command retrieves >1 book 2.5%
10. PS command - no previous screen 1.8%
11. All others 14.3%
Ten most frequent SHOW requests:
1. HISTORY 55.7%
2. PSYCINFO NEWS 12.5%
3. SEARCH 11.4%
4. SETTINGS (INS/PSY DBS) 9.1%
5. GLOSSARY 2.3%
6. MAIL STATUS 2.3%
7. IAC STATISTICS 1.1%
8. FORM NAMES (PSY DB) 1.1%
9. SYSTEM NEWS 1.1%
10. MAIL SETTINGS 1.1%
11. All others 2.3%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)