MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/23/02 through 03/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 156 171
Davis 141 0 141
Irvine 29 0 29
Los Angeles 0 98 98
Riverside 14 31 45
San Diego 17 74 91
San Francisco 34 0 34
Santa Barbara 4 35 39
Santa Cruz 2 46 48
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 28 28
Other-Network UC n/a 117 117
_______ ______ _____
256 585 841
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 76 895
2-4 a.m. 20 272 769
4-6 a.m. 12 49 431
6-8 a.m. 22 78 1,097
8-10 a.m. 86 209 2,462
10-12 a.m. 165 616 4,517
12-2 p.m. 160 666 7,541
2-4 p.m. 165 659 6,457
4-6 p.m. 89 285 2,547
6-8 p.m. 39 122 1,440
8-10 p.m. 30 123 969
10-12 p.m. 28 154 1,323
__________ __________ __________ _________________
Total: 841 3,309 30,448
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 63 491 554
Davis 636 0 636
Irvine 130 0 130
Los Angeles 0 430 430
Riverside 121 115 236
San Diego 26 281 307
San Francisco 279 0 279
Santa Barbara 7 133 140
Santa Cruz 8 147 155
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 64 64
Other-Network UC n/a 378 378
_______ ______ _____
1,270 2,039 3,309
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 785 5,750 6,535
Davis 6,499 0 6,499
Irvine 790 0 790
Los Angeles 0 4,315 4,315
Riverside 823 862 1,685
San Diego 266 2,911 3,177
San Francisco 1,929 0 1,929
Santa Barbara 34 1,312 1,346
Santa Cruz 37 1,773 1,810
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 386 386
Other-Network UC n/a 1,976 1,976
_______ ______ _____
11,163 19,285 30,448
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.1
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
_________________________________________
Median session length (minutes:seconds) 7:32
Average session length (minutes:seconds) 12:31
Longest session recorded (minutes:seconds) 200:20
Average number of searches completed per session 3.9
Retrievals per search - median 8.0
Retrievals per search - average 762.0
Retrievals per search - standard deviation 6968.3
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 72.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,916 29.6%
DISPLAY (excluding automatic displays) 3,970 40.4%
BROWSE 19 0.2%
SELECT 2 0.0%
HELP 88 0.9%
EXPLAIN 95 1.0%
SET/RESET 215 2.2%
SHOW 32 0.3%
ADD ON (AND, OR, AND NOT) 393 4.0%
LOGON or LOGOFF 1,332 13.5%
COMMENT 0 0.0%
SAVE 473 4.8%
USE 2 0.0%
OTHER 319 3.2%
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 1,268 33.6% 225 17.7% 14 56.9 154.6
TITLE WORD 372 9.9% 103 27.7% 11 95.9 377.5
EXACT TITLE 36 1.0% 11 30.6% 1 15.4 23.3
JOURNAL 67 1.8% 20 29.8% 577 2523.5 4659.9
EXACT JOURNAL 51 1.4% 10 19.6% 506 1694.4 2751.2
SUBJECT 96 2.5% 41 42.7% 229 6134.0 15608.3
EXACT SUBJECT 300 8.0% 200 66.7% 19 4898.7 10494.6
KEYWORD 811 21.5% 132 16.3% 30 1626.4 12714.3
FORM/PUB TYPE 40 1.1% 5 12.5% 16 35.6 59.3
DATE 445 11.8% 225 50.6% 5 46.5 182.6
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 25 0.7% 4 16.0% 56 104.3 121.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 2 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 48 1.3% 9 18.8% 33 239.6 626.2
EXACT PE 9 0.2% 1 11.1% 2 3.9 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 199 5.3% 105 52.8% 12 1023.9 3179.1
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 676 23.4% 286 42.3% 6 42.1 150.2
Single 2,213 76.6% 412 18.6% 30 1271.0 8814.4
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 18 94.7% 5 27.8% 4 9.3 10.4
EXACT SUBJECT 1 5.3% 0 0.0% 7 7.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 88.5%
LONG 0.5%
TAGS 0.5%
FIELDS 3.1%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 14.1%
Ten most frequent errors:
1. First word of command is invalid 48.9%
2. NS command - no next screen 17.7%
3. DISPLAY command - no FIND results 12.8%
4. FIND command with invalid index name 5.4%
5. PS command - no previous screen 2.8%
6. Valid command at an inappropriate time 1.9%
7. DISPLAY command contains invalid word 1.4%
8. Search term missing from search command 1.1%
9. 1281 0.8%
10. Add-on search, no index name after verb 0.6%
11. All others 6.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 34.7%
2. LOCATE (INS/PSY DBS) 20.0%
3. FIND (PSY DB) 5.3%
4. Unrecognized term 5.3%
5. SEARCH (PSY DB) 4.2%
6. COMMANDS (ABI/PSY DBS) 3.2%
7. DISPLAY (INS/PSY DBS) 3.2%
8. INDEXES (PSY DB) 3.2%
9. P030 3.2%
10. BROWSE (PSY DB) 2.1%
11. All others 15.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.5%
2. First word of command is invalid 18.0%
3. FIND command with invalid index name 10.4%
4. DISPLAY command - middle of >1 screen 7.1%
5. FIND command with zero results 4.9%
6. FIND command retrieves >1 book 4.4%
7. NS command - no next screen 3.8%
8. DISPLAY command-first of >1 screen 3.8%
9. 1281 3.8%
10. PS command - no previous screen 2.7%
11. All others 17.5%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 20.8%
3. SETTINGS (INS/PSY DBS) 16.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)