MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/01/01 through 06/30/01
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 106 523 629
Davis 583 0 583
Irvine 214 0 214
Los Angeles 14 454 468
Riverside 42 138 180
San Diego 36 411 447
San Francisco 163 0 163
Santa Barbara 19 118 137
Santa Cruz 45 62 107
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 164 169
Other-Network UC n/a 617 617
_______ ______ _____
1,227 2,487 3,714
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 61 299 1,995
2-4 a.m. 95 1,246 4,801
4-6 a.m. 86 1,180 4,151
6-8 a.m. 67 194 2,032
8-10 a.m. 387 1,284 9,495
10-12 a.m. 668 2,337 23,480
12-2 p.m. 662 2,483 25,423
2-4 p.m. 769 2,558 29,159
4-6 p.m. 493 1,965 16,700
6-8 p.m. 215 865 11,191
8-10 p.m. 120 547 6,424
10-12 p.m. 91 472 4,151
__________ __________ __________ _________________
Total: 3,714 15,430 139,002
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 489 1,947 2,436
Davis 3,691 3 3,694
Irvine 680 0 680
Los Angeles 36 1,765 1,801
Riverside 236 618 854
San Diego 195 1,424 1,619
San Francisco 595 0 595
Santa Barbara 64 438 502
Santa Cruz 100 209 309
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 16 736 752
Other-Network UC n/a 2,188 2,188
_______ ______ _____
6,102 9,328 15,430
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,989 18,447 24,436
Davis 23,021 7 23,028
Irvine 6,456 0 6,456
Los Angeles 419 18,879 19,298
Riverside 2,864 4,305 7,169
San Diego 726 11,795 12,521
San Francisco 9,549 0 9,549
Santa Barbara 328 6,399 6,727
Santa Cruz 2,484 1,869 4,353
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 50 7,252 7,302
Other-Network UC n/a 18,163 18,163
_______ ______ _____
51,886 87,116 139,002
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 1.0
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) 7:37
Average session length (minutes:seconds) 13:27
Longest session recorded (minutes:seconds) 1209
Average number of searches completed per session 4.1
Retrievals per search - median 5.0
Retrievals per search - average 494.0
Retrievals per search - standard deviation 5323.0
Percent of searches completed with 0 results 27.0%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 73.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,950 31.8%
DISPLAY (excluding automatic displays) 17,207 39.2%
BROWSE 27 0.1%
SELECT 5 0.0%
HELP 301 0.7%
EXPLAIN 384 0.9%
SET/RESET 1,151 2.6%
SHOW 106 0.2%
ADD ON (AND, OR, AND NOT) 1,478 3.4%
LOGON or LOGOFF 5,660 12.9%
COMMENT 0 0.0%
SAVE 2,367 5.4%
USE 12 0.0%
OTHER 1,316 3.0%
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 6,368 33.7% 1,239 19.5% 12 59.3 257.0
TITLE WORD 1,278 6.8% 372 29.1% 10 384.8 4283.5
EXACT TITLE 171 0.9% 65 38.0% 1 10.6 35.2
JOURNAL 302 1.6% 99 32.8% 235 1962.6 4258.0
EXACT JOURNAL 107 0.6% 27 25.2% 495 1637.2 3646.9
SUBJECT 673 3.6% 320 47.5% 217 5003.7 14974.7
EXACT SUBJECT 1,999 10.6% 1,389 69.5% 2 44.4 442.9
KEYWORD 3,513 18.6% 554 15.8% 39 1311.9 8898.8
FORM/PUB TYPE 51 0.3% 5 9.8% 68 615.8 1052.1
DATE 2,882 15.2% 1,533 53.2% 3 52.1 519.2
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% 2 40.0% 45 565.3 923.0
CONFERENCE 4 0.0% 3 75.0% 5 5.0 0.0
LANGUAGE 21 0.1% 0 0.0% 330 1091.5 1865.2
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 57 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 210 1.1% 36 17.1% 4 66.3 433.0
EXACT PE 47 0.2% 9 19.1% 3 30.9 78.3
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 1,212 6.4% 695 57.3% 2 58.1 514.1
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 3,766 27.3% 1,740 46.2% 4 101.8 1662.8
Single 10,049 72.7% 2,100 20.9% 25 829.8 6482.5
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 27 100% 13 48.1% 4 10.0 11.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 87.9%
LONG 1.0%
TAGS 1.4%
FIELDS 4.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.4%
Ten most frequent errors:
1. DISPLAY command - no FIND results 28.3%
2. NS command - no next screen 26.3%
3. First word of command is invalid 20.9%
4. FIND command with invalid index name 5.6%
5. PS command - no previous screen 3.2%
6. DISPLAY command contains invalid word 2.3%
7. Valid command at an inappropriate time 1.6%
8. Search term missing from search command 1.5%
9. Add-on search, no index name after verb 1.3%
10. DISPLAY command-record numbers too large 1.2%
11. All others 7.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 25.0%
2. GUIDE 23.7%
3. FIND (PSY DB) 8.3%
4. MAIL 4.7%
5. Unrecognized term 3.9%
6. DATABASES 3.4%
7. COMMANDS (ABI/PSY DBS) 3.1%
8. SEARCH (PSY DB) 3.1%
9. INDEXES (PSY DB) 3.1%
10. DISPLAY (INS/PSY DBS) 2.9%
11. All others 18.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.2%
2. First word of command is invalid 14.6%
3. DISPLAY command-first of >1 screen 9.8%
4. FIND command with zero results 7.3%
5. FIND command with invalid index name 6.0%
6. DISPLAY command - middle of >1 screen 5.5%
7. DISPLAY command-complete in one screen 3.8%
8. FIND command retrieves >1 book 3.5%
9. PS command - no previous screen 3.1%
10. DISPLAY command - last of >1 screen 3.1%
11. All others 22.2%
Ten most frequent SHOW requests:
1. HISTORY 54.1%
2. SEARCH 22.4%
3. MAIL STATUS 10.2%
4. PSYCINFO NEWS 5.1%
5. PUBLICATION TYPES (PSY DB) 3.1%
6. MAIL SETTINGS 2.0%
7. SETTINGS (INS/PSY DBS) 1.0%
8. X075 1.0%
9. GLOSSARY 1.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)