MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/01/02 through 06/30/02
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 34 381 415
Davis 347 4 351
Irvine 83 0 83
Los Angeles 5 242 247
Riverside 14 90 104
San Diego 26 194 220
San Francisco 54 0 54
Santa Barbara 7 129 136
Santa Cruz 0 40 40
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 76 76
Other-Network UC n/a 404 404
_______ ______ _____
570 1,560 2,130
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 42 182 1,156
2-4 a.m. 86 1,093 5,678
4-6 a.m. 10 32 76
6-8 a.m. 52 265 2,069
8-10 a.m. 240 783 6,833
10-12 a.m. 437 1,857 12,605
12-2 p.m. 390 1,529 13,832
2-4 p.m. 385 1,575 11,212
4-6 p.m. 260 1,137 21,815
6-8 p.m. 103 563 5,068
8-10 p.m. 75 510 3,322
10-12 p.m. 50 398 3,001
__________ __________ __________ _________________
Total: 2,130 9,924 86,667
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 115 1,456 1,571
Davis 2,535 18 2,553
Irvine 221 0 221
Los Angeles 38 1,204 1,242
Riverside 63 322 385
San Diego 87 671 758
San Francisco 205 0 205
Santa Barbara 23 650 673
Santa Cruz 0 276 276
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 331 331
Other-Network UC n/a 1,709 1,709
_______ ______ _____
3,287 6,637 9,924
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,301 13,404 14,705
Davis 19,623 128 19,751
Irvine 2,724 0 2,724
Los Angeles 378 10,952 11,330
Riverside 719 2,752 3,471
San Diego 310 6,150 6,460
San Francisco 804 0 804
Santa Barbara 107 8,594 8,701
Santa Cruz 0 2,955 2,955
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 5,208 5,208
Other-Network UC n/a 10,558 10,558
_______ ______ _____
25,966 60,701 86,667
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
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 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 7:04
Average session length (minutes:seconds) 13:22
Longest session recorded (minutes:seconds) 343:16
Average number of searches completed per session 4.6
Retrievals per search - median 8.0
Retrievals per search - average 811.9
Retrievals per search - standard deviation 8196.9
Percent of searches completed with 0 results 22.9%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 76.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,002 33.1%
DISPLAY (excluding automatic displays) 11,117 40.8%
BROWSE 11 0.0%
SELECT 2 0.0%
HELP 142 0.5%
EXPLAIN 187 0.7%
SET/RESET 653 2.4%
SHOW 79 0.3%
ADD ON (AND, OR, AND NOT) 921 3.4%
LOGON or LOGOFF 3,441 12.6%
COMMENT 0 0.0%
SAVE 993 3.6%
USE 1 0.0%
OTHER 698 2.6%
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 3,925 31.5% 751 19.1% 13 56.8 180.9
TITLE WORD 943 7.6% 249 26.4% 13 329.2 1675.0
EXACT TITLE 45 0.4% 20 44.4% 1 92.4 412.6
JOURNAL 112 0.9% 27 24.1% 400 1567.1 2992.2
EXACT JOURNAL 353 2.8% 39 11.0% 2,531 5690.4 18604.7
SUBJECT 446 3.6% 143 32.1% 178 3091.2 10728.4
EXACT SUBJECT 950 7.6% 635 66.8% 2 33.7 254.0
KEYWORD 2,276 18.2% 351 15.4% 44 2633.3 15788.9
FORM/PUB TYPE 56 0.4% 5 8.9% 50 1174.3 3750.1
DATE 1,900 15.2% 766 40.3% 7 332.6 2574.6
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. 22 0.2% 7 31.8% 306 1253.3 2584.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 22 0.2% 3 13.6% 12 120.4 363.5
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 38 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 136 1.1% 12 8.8% 4 42.5 238.4
EXACT PE 41 0.3% 3 7.3% 2 3.7 3.8
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 1,213 9.7% 321 26.5% 37 1301.3 2995.6
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 2,704 30.4% 903 33.4% 11 811.2 2966.3
Single 6,202 69.6% 1,222 19.7% 26 1220.1 11158.6
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 11 100% 3 27.3% 2 4.4 5.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 87.4%
LONG 0.9%
TAGS 1.3%
FIELDS 4.3%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 30.2%
2. DISPLAY command - no FIND results 23.0%
3. First word of command is invalid 19.5%
4. FIND command with invalid index name 7.5%
5. DISPLAY command contains invalid word 2.7%
6. PS command - no previous screen 2.6%
7. Valid command at an inappropriate time 1.4%
8. DISPLAY command-record numbers too large 1.4%
9. Search term missing from search command 1.3%
10. 745 0.8%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 30.5%
2. GUIDE 18.2%
3. FIND (PSY DB) 7.0%
4. INDEXES (PSY DB) 5.9%
5. MAIL 5.3%
6. PUBLICATION TYPE (PSY DB) 4.3%
7. COMMANDS (ABI/PSY DBS) 3.2%
8. P031 2.1%
9. MAGS TEXT 1.6%
10. DISPLAY (INS/PSY DBS) 1.6%
11. All others 20.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.4%
2. DISPLAY command-first of >1 screen 9.7%
3. FIND command with invalid index name 9.1%
4. First word of command is invalid 8.5%
5. FIND command with zero results 6.7%
6. DISPLAY command - middle of >1 screen 6.1%
7. DISPLAY command-complete in one screen 5.2%
8. Help requested from SHOW SEARCH 4.3%
9. DISPLAY command - last of >1 screen 4.3%
10. FIND command retrieves >1 book 4.0%
11. All others 21.9%
Ten most frequent SHOW requests:
1. HISTORY 55.0%
2. SEARCH 20.0%
3. PSYCINFO NEWS 11.7%
4. SETTINGS (INS/PSY DBS) 6.7%
5. PUBLICATION TYPES (PSY DB) 3.3%
6. MAIL STATUS 3.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)