MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 57 225 282
Davis 308 0 308
Irvine 114 0 114
Los Angeles 29 152 181
Riverside 20 18 38
San Diego 35 125 160
San Francisco 87 0 87
Santa Barbara 18 37 55
Santa Cruz 46 66 112
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 30 31
Other-Network UC n/a 150 150
_______ ______ _____
715 803 1,518
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 49 600
2-4 a.m. 9 43 522
4-6 a.m. 170 614 2,547
6-8 a.m. 30 69 1,145
8-10 a.m. 115 452 3,204
10-12 a.m. 254 821 8,354
12-2 p.m. 217 807 9,570
2-4 p.m. 291 946 9,699
4-6 p.m. 229 860 9,002
6-8 p.m. 80 366 5,210
8-10 p.m. 66 291 3,621
10-12 p.m. 45 181 2,697
__________ __________ __________ _________________
Total: 1,518 5,499 56,171
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 244 765 1,009
Davis 1,007 0 1,007
Irvine 418 0 418
Los Angeles 102 574 676
Riverside 63 70 133
San Diego 130 331 461
San Francisco 337 0 337
Santa Barbara 39 82 121
Santa Cruz 156 455 611
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 97 103
Other-Network UC n/a 623 623
_______ ______ _____
2,502 2,997 5,499
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,542 8,811 10,353
Davis 7,849 0 7,849
Irvine 4,779 0 4,779
Los Angeles 1,649 4,949 6,598
Riverside 592 589 1,181
San Diego 563 2,600 3,163
San Francisco 5,840 0 5,840
Santa Barbara 304 1,332 1,636
Santa Cruz 2,540 4,603 7,143
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 89 1,010 1,099
Other-Network UC n/a 6,530 6,530
_______ ______ _____
25,747 30,424 56,171
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 1.3
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) 5:56
Average session length (minutes:seconds) 12:18
Longest session recorded (minutes:seconds) 395:55
Average number of searches completed per session 3.6
Retrievals per search - median 7.0
Retrievals per search - average 645.0
Retrievals per search - standard deviation 7404.1
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 64.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,954 29.1%
DISPLAY (excluding automatic displays) 6,857 40.3%
BROWSE 24 0.1%
SELECT 12 0.1%
HELP 237 1.4%
EXPLAIN 298 1.8%
SET/RESET 618 3.6%
SHOW 62 0.4%
ADD ON (AND, OR, AND NOT) 542 3.2%
LOGON or LOGOFF 2,244 13.2%
COMMENT 0 0.0%
SAVE 717 4.2%
USE 5 0.0%
OTHER 463 2.7%
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 1,831 30.0% 365 19.9% 20 59.8 163.6
TITLE WORD 567 9.3% 158 27.9% 8 146.9 1000.1
EXACT TITLE 93 1.5% 42 45.2% 1 8.5 15.5
JOURNAL 130 2.1% 35 26.9% 427 8191.3 38613.4
EXACT JOURNAL 56 0.9% 22 39.3% 1,063 2528.4 3458.3
SUBJECT 302 4.9% 168 55.6% 351 2379.8 5798.1
EXACT SUBJECT 469 7.7% 392 83.6% 9 101.3 478.2
KEYWORD 1,408 23.1% 244 17.3% 74 1787.8 11071.5
FORM/PUB TYPE 12 0.2% 1 8.3% 152 1110.5 2840.6
DATE 651 10.7% 424 65.1% 7 40.8 205.4
ADDED 1 0.0% 0 0.0% 27 27.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 4 0.1% 0 0.0% 200 211.3 22.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.0% 0 0.0% 114 339.3 485.0
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 152 2.5% 0 0.0% 1 1.0 0.0
PERIODICAL 108 1.8% 20 18.5% 5 463.9 4000.9
EXACT PE 20 0.3% 4 20.0% 2 3.9 4.3
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 301 4.9% 220 73.1% 13 56.3 172.8
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 912 18.6% 505 55.4% 6 64.6 506.9
Single 3,991 81.4% 858 21.5% 29 1095.9 9732.6
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 22 91.7% 2 9.1% 2 2.8 2.3
EXACT SUBJECT 2 8.3% 0 0.0% 2 1.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 87.3%
LONG 1.3%
TAGS 2.2%
FIELDS 2.6%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 31.0%
2. First word of command is invalid 21.4%
3. DISPLAY command - no FIND results 20.0%
4. FIND command with invalid index name 6.7%
5. PS command - no previous screen 3.7%
6. DISPLAY command contains invalid word 3.6%
7. Valid command at an inappropriate time 2.6%
8. Search term missing from search command 1.3%
9. Add-on search, no index name after verb 1.0%
10. DISPLAY command-record numbers too large 0.7%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 20.8%
2. GUIDE 20.1%
3. FIND (PSY DB) 8.4%
4. INDEXES (PSY DB) 7.0%
5. Unrecognized term 4.7%
6. COMMANDS (ABI/PSY DBS) 4.0%
7. MAIL 3.4%
8. DISPLAY (INS/PSY DBS) 3.4%
9. ADDON SEARCH 2.7%
10. SEARCH (PSY DB) 2.3%
11. All others 23.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.7%
2. First word of command is invalid 10.3%
3. DISPLAY command - middle of >1 screen 9.3%
4. DISPLAY command-first of >1 screen 6.7%
5. FIND command with invalid index name 6.4%
6. DISPLAY command - last of >1 screen 6.4%
7. FIND command with zero results 6.2%
8. NS command - no next screen 4.7%
9. DISPLAY command-complete in one screen 3.9%
10. FIND command retrieves >1 book 3.4%
11. All others 21.1%
Ten most frequent SHOW requests:
1. HISTORY 45.2%
2. SEARCH 17.7%
3. MAIL STATUS 16.1%
4. PSYCINFO NEWS 6.5%
5. GLOSSARY 3.2%
6. SETTINGS (INS/PSY DBS) 1.6%
7. PSYCINFO LOADING STATISTICS 1.6%
8. BIBLIOGRAPHIC SOFTWARE 1.6%
9. DISPLAY (MED/INS/PSY DBS) 1.6%
10. 1800 1.6%
11. All others 3.2%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)