MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,219 1,461 2,680
Davis 1,434 56 1,490
Irvine 1,284 0 1,284
Los Angeles 1,371 2,275 3,646
Riverside 1,603 381 1,984
San Diego 70 911 981
San Francisco 679 24 703
Santa Barbara 827 972 1,799
Santa Cruz 1,365 444 1,809
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 65 261 326
Other-Network UC n/a 1,061 1,061
_______ ______ _____
9,917 7,846 17,763
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 248 1,199 12,773
2-4 a.m. 59 324 4,265
4-6 a.m. 53 151 2,239
6-8 a.m. 220 777 10,960
8-10 a.m. 1,374 5,364 54,341
10-12 a.m. 2,822 13,261 140,904
12-2 p.m. 3,309 15,520 168,775
2-4 p.m. 3,737 17,441 196,314
4-6 p.m. 2,609 12,102 135,409
6-8 p.m. 1,528 7,251 81,990
8-10 p.m. 1,112 5,398 56,947
10-12 p.m. 692 3,438 36,020
__________ __________ __________ _________________
Total: 17,763 82,226 900,937
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 5,709 5,667 11,376
Davis 5,962 276 6,238
Irvine 5,987 0 5,987
Los Angeles 6,722 12,020 18,742
Riverside 8,924 1,544 10,468
San Diego 242 3,613 3,855
San Francisco 2,804 71 2,875
Santa Barbara 4,007 4,316 8,323
Santa Cruz 7,221 1,858 9,079
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 119 1,099 1,218
Other-Network UC n/a 4,065 4,065
_______ ______ _____
47,697 34,529 82,226
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 60,745 78,979 139,724
Davis 60,966 1,606 62,572
Irvine 65,550 0 65,550
Los Angeles 100,170 139,714 239,884
Riverside 84,241 18,520 102,761
San Diego 1,336 28,558 29,894
San Francisco 31,449 769 32,218
Santa Barbara 35,479 47,373 82,852
Santa Cruz 73,205 20,722 93,927
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 656 11,366 12,022
Other-Network UC n/a 39,533 39,533
_______ ______ _____
513,797 387,140 900,937
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.4
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 10:27
Average session length (minutes:seconds) 15:51
Longest session recorded (minutes:seconds) 511:53
Average number of searches completed per session 4.6
Retrievals per search - median 10.0
Retrievals per search - average 992.9
Retrievals per search - standard deviation 7478.0
Percent of searches completed with 0 results 25.2%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 54.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 73,779 28.0%
DISPLAY (excluding automatic displays) 117,170 44.5%
BROWSE 425 0.2%
SELECT 162 0.1%
HELP 4,460 1.7%
EXPLAIN 4,953 1.9%
SET/RESET 4,564 1.7%
SHOW 1,219 0.5%
ADD ON (AND, OR, AND NOT) 8,414 3.2%
LOGON or LOGOFF 27,009 10.3%
COMMENT 8 0.0%
SAVE 12,651 4.8%
USE 44 0.0%
OTHER 9,170 3.5%
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 25,924 31.8% 5,338 20.6% 16 83.1 1023.5
TITLE WORD 8,321 10.2% 2,495 30.0% 12 100.6 580.2
EXACT TITLE 1,799 2.2% 798 44.4% 1 21.9 71.3
JOURNAL 2,153 2.6% 663 30.8% 482 3319.8 12430.1
EXACT JOURNAL 1,030 1.3% 298 28.9% 526 5606.1 26648.4
SUBJECT 10,399 12.7% 5,622 54.1% 669 5610.8 14870.7
EXACT SUBJECT 652 0.8% 308 47.2% 846 3268.3 6788.2
KEYWORD 23,981 29.4% 3,802 15.9% 59 1877.2 10905.6
FORM/PUB TYPE 396 0.5% 59 14.9% 72 663.9 3186.7
DATE 4,144 5.1% 800 19.3% 5 65.6 466.0
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. 66 0.1% 26 39.4% 85 919.9 2514.1
CONFERENCE 4 0.0% 1 25.0% 2 3.0 1.7
LANGUAGE 297 0.4% 82 27.6% 122 1281.2 3901.3
ISSN 4 0.0% 1 25.0% 3 54.3 88.9
ISBN 5 0.0% 3 60.0% 1 1.0 0.0
ID NUMBER 31 0.0% 26 83.9% 1 1.0 0.0
PERIODICAL 1,619 2.0% 358 22.1% 5 292.4 2195.1
EXACT PE 312 0.4% 68 21.8% 3 17.7 90.7
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 1 0.0% 1 100% 0 0.0 0.0
Other indexes 434 0.5% 113 26.0% 40 753.8 2599.5
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 8,340 11.4% 2,014 24.1% 6 195.8 2342.8
Single 64,504 88.6% 16,710 25.9% 40 1590.7 9523.9
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 388 91.3% 139 35.8% 2 6.9 13.3
EXACT SUBJECT 37 8.7% 18 48.6% 2 3.1 3.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 89.9%
LONG 1.2%
TAGS 0.1%
FIELDS 0.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 4.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. First word of command is invalid 32.8%
2. NS command - no next screen 27.9%
3. FIND command with invalid index name 8.5%
4. PS command - no previous screen 6.3%
5. DISPLAY command contains invalid word 4.8%
6. Valid command at an inappropriate time 2.9%
7. Search term missing from search command 1.9%
8. Add-on search, no index name after verb 1.5%
9. DISPLAY command-record numbers too large 1.3%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 33.4%
2. GUIDE 18.4%
3. FIND (PSY DB) 6.8%
4. COMMANDS (ABI/PSY DBS) 5.5%
5. Unrecognized term 4.9%
6. INDEXES (PSY DB) 3.5%
7. DISPLAY (INS/PSY DBS) 3.3%
8. ADDON SEARCH 2.8%
9. MAIL 2.2%
10. MAGS TEXT 1.4%
11. All others 17.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.7%
2. First word of command is invalid 15.4%
3. DISPLAY command-first of >1 screen 8.5%
4. DISPLAY command - middle of >1 screen 7.1%
5. FIND command with invalid index name 6.6%
6. FIND command with zero results 6.5%
7. DISPLAY command-complete in one screen 6.1%
8. FIND command retrieves >1 book 3.8%
9. DISPLAY command - last of >1 screen 3.4%
10. NS command - no next screen 2.9%
11. All others 21.0%
Ten most frequent SHOW requests:
1. SEARCH 40.9%
2. HISTORY 38.7%
3. MAIL STATUS 10.7%
4. GLOSSARY 1.9%
5. MAIL SETTINGS 1.9%
6. SETTINGS (INS/PSY DBS) 1.8%
7. PSYCINFO NEWS 1.5%
8. SYSTEM NEWS 0.8%
9. DISPLAY (MED/INS/PSY DBS) 0.4%
10. 0566 0.2%
11. All others 1.3%