MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 50 590 640
Davis 469 5 474
Irvine 181 0 181
Los Angeles 9 322 331
Riverside 6 102 108
San Diego 51 303 354
San Francisco 105 0 105
Santa Barbara 6 160 166
Santa Cruz 8 87 95
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 107 112
Other-Network UC n/a 448 448
_______ ______ _____
890 2,124 3,014
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 57 234 1,596
2-4 a.m. 87 1,157 3,320
4-6 a.m. 17 49 495
6-8 a.m. 64 231 2,271
8-10 a.m. 316 999 9,130
10-12 a.m. 562 2,020 17,582
12-2 p.m. 519 1,729 17,949
2-4 p.m. 633 2,305 20,862
4-6 p.m. 390 1,475 14,115
6-8 p.m. 162 734 7,158
8-10 p.m. 130 515 4,941
10-12 p.m. 77 264 2,333
__________ __________ __________ _________________
Total: 3,014 11,712 101,752
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 149 2,037 2,186
Davis 2,562 20 2,582
Irvine 609 0 609
Los Angeles 36 1,301 1,337
Riverside 15 471 486
San Diego 82 831 913
San Francisco 596 0 596
Santa Barbara 12 702 714
Santa Cruz 18 438 456
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 391 392
Other-Network UC n/a 1,441 1,441
_______ ______ _____
4,080 7,632 11,712
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,322 21,066 22,388
Davis 15,515 214 15,729
Irvine 7,597 0 7,597
Los Angeles 349 14,675 15,024
Riverside 118 2,872 2,990
San Diego 242 7,515 7,757
San Francisco 4,384 0 4,384
Santa Barbara 83 7,279 7,362
Santa Cruz 47 4,370 4,417
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 2,663 2,667
Other-Network UC n/a 11,437 11,437
_______ ______ _____
29,661 72,091 101,752
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) 7:38
Average session length (minutes:seconds) 13:29
Longest session recorded (minutes:seconds) 867:38
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 733.6
Retrievals per search - standard deviation 14026
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 72.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,539 30.8%
DISPLAY (excluding automatic displays) 13,879 40.6%
BROWSE 28 0.1%
SELECT 6 0.0%
HELP 285 0.8%
EXPLAIN 278 0.8%
SET/RESET 914 2.7%
SHOW 120 0.4%
ADD ON (AND, OR, AND NOT) 1,172 3.4%
LOGON or LOGOFF 4,539 13.3%
COMMENT 0 0.0%
SAVE 1,414 4.1%
USE 3 0.0%
OTHER 1,044 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 AUTHOR 4,581 33.9% 826 18.0% 15 72.5 1119.4
TITLE WORD 1,316 9.7% 382 29.0% 9 146.6 1058.5
EXACT TITLE 100 0.7% 39 39.0% 3 13.2 20.9
JOURNAL 321 2.4% 111 34.6% 403 2021.8 3314.6
EXACT JOURNAL 170 1.3% 42 24.7% 917 3079.4 19847.5
SUBJECT 541 4.0% 238 44.0% 429 5058.7 13048.6
EXACT SUBJECT 1,094 8.1% 876 80.1% 5 1425.4 6199.9
KEYWORD 2,561 19.0% 419 16.4% 41 2461.1 31590.1
FORM/PUB TYPE 49 0.4% 9 18.4% 47 494.5 1746.1
DATE 1,703 12.6% 958 56.3% 4 27.6 291.7
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 0.1% 2 14.3% 72 269.5 453.8
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 15 15.0 0.0
ID NUMBER 25 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 283 2.1% 55 19.4% 5 34.6 156.9
EXACT PE 95 0.7% 17 17.9% 2 5.9 17.4
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 643 4.8% 461 71.7% 6 93.9 357.4
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 2,388 22.9% 1,142 47.8% 5 139.6 2016.1
Single 8,052 77.1% 1,669 20.7% 27 1263.1 18808.0
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 25 89.3% 10 40.0% 1 1.7 1.3
EXACT SUBJECT 3 10.7% 3 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 87.9%
LONG 0.8%
TAGS 0.5%
FIELDS 3.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 27.5%
2. DISPLAY command - no FIND results 23.5%
3. First word of command is invalid 22.1%
4. FIND command with invalid index name 6.6%
5. PS command - no previous screen 3.9%
6. DISPLAY command contains invalid word 2.7%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.9%
9. DISPLAY command-record numbers too large 1.3%
10. Command contains escape or arrow key 0.6%
11. All others 7.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.4%
2. LOCATE (INS/PSY DBS) 22.3%
3. FIND (PSY DB) 6.8%
4. Unrecognized term 6.8%
5. COMMANDS (ABI/PSY DBS) 5.4%
6. INDEXES (PSY DB) 4.3%
7. DISPLAY (INS/PSY DBS) 3.6%
8. DATABASES 3.6%
9. ADDON SEARCH 2.5%
10. MAGS TEXT 1.8%
11. All others 14.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. First word of command is invalid 17.1%
3. FIND command with invalid index name 10.3%
4. DISPLAY command-first of >1 screen 8.0%
5. DISPLAY command - middle of >1 screen 6.0%
6. FIND command retrieves >1 book 5.0%
7. FIND command with zero results 4.4%
8. DISPLAY command-complete in one screen 3.0%
9. DISPLAY command - last of >1 screen 2.8%
10. NS command - no next screen 2.7%
11. All others 18.5%
Ten most frequent SHOW requests:
1. HISTORY 43.7%
2. SEARCH 34.0%
3. SETTINGS (INS/PSY DBS) 5.8%
4. PSYCINFO NEWS 4.9%
5. MAIL STATUS 3.9%
6. LOCATION 1.0%
7. PUBLICATION TYPES (PSY DB) 1.0%
8. FORM NAMES (PSY DB) 1.0%
9. GLOSSARY 1.0%
10. LIBRARY SETTINGS 1.0%
11. All others 2.9%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)