MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 17 184 201
Davis 95 0 95
Irvine 40 0 40
Los Angeles 1 65 66
Riverside 2 28 30
San Diego 10 87 97
San Francisco 7 0 7
Santa Barbara 7 16 23
Santa Cruz 1 26 27
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 21 21
Other-Network UC n/a 78 78
_______ ______ _____
180 505 685
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 36 302
2-4 a.m. 18 264 686
4-6 a.m. 5 9 159
6-8 a.m. 17 48 172
8-10 a.m. 74 286 1,554
10-12 a.m. 124 396 4,836
12-2 p.m. 112 406 3,959
2-4 p.m. 126 433 4,389
4-6 p.m. 95 287 4,026
6-8 p.m. 44 131 1,383
8-10 p.m. 49 119 1,345
10-12 p.m. 13 78 648
__________ __________ __________ _________________
Total: 685 2,493 23,459
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 47 625 672
Davis 469 0 469
Irvine 108 0 108
Los Angeles 2 279 281
Riverside 0 71 71
San Diego 64 218 282
San Francisco 16 0 16
Santa Barbara 8 61 69
Santa Cruz 6 205 211
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 101 101
Other-Network UC n/a 213 213
_______ ______ _____
720 1,773 2,493
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 663 5,947 6,610
Davis 2,203 0 2,203
Irvine 634 0 634
Los Angeles 35 3,532 3,567
Riverside 0 557 557
San Diego 2,053 2,880 4,933
San Francisco 50 0 50
Santa Barbara 26 945 971
Santa Cruz 21 1,489 1,510
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 967 967
Other-Network UC n/a 1,457 1,457
_______ ______ _____
5,685 17,774 23,459
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 0.8
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) 6:21
Average session length (minutes:seconds) 10:47
Longest session recorded (minutes:seconds) 116:31
Average number of searches completed per session 3.6
Retrievals per search - median 6.0
Retrievals per search - average 631.7
Retrievals per search - standard deviation 5116.3
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 63.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,264 30.7%
DISPLAY (excluding automatic displays) 2,862 38.8%
BROWSE 6 0.1%
SELECT 1 0.0%
HELP 82 1.1%
EXPLAIN 92 1.2%
SET/RESET 201 2.7%
SHOW 21 0.3%
ADD ON (AND, OR, AND NOT) 229 3.1%
LOGON or LOGOFF 1,063 14.4%
COMMENT 0 0.0%
SAVE 337 4.6%
USE 0 0.0%
OTHER 229 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 1,019 35.1% 182 17.9% 18 52.9 177.9
TITLE WORD 298 10.3% 83 27.9% 6 188.8 1275.4
EXACT TITLE 34 1.2% 15 44.1% 5 176.6 272.8
JOURNAL 45 1.6% 7 15.6% 398 1862.2 4646.7
EXACT JOURNAL 25 0.9% 6 24.0% 208 1400.4 2448.7
SUBJECT 215 7.4% 81 37.7% 1,228 6458.8 13829.0
EXACT SUBJECT 246 8.5% 169 68.7% 1 5.8 11.2
KEYWORD 412 14.2% 53 12.9% 39 1190.8 9420.1
FORM/PUB TYPE 11 0.4% 0 0.0% 3,776 2891.2 1860.9
DATE 391 13.5% 187 47.8% 3 155.6 694.4
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 1 0.0% 0 0.0% 336 336.0 0.0
AUTHOR AFFIL. 2 0.1% 0 0.0% 717 717.0 786.3
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.1% 0 0.0% 3,525 2968.0 2697.0
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 7 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 41 1.4% 9 21.9% 5 13.2 35.6
EXACT PE 8 0.3% 0 0.0% 2 45.6 122.6
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 145 5.0% 80 55.2% 1 8.0 20.5
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 504 22.5% 217 43.1% 3 148.1 694.1
Single 1,731 77.4% 354 20.4% 26 1043.8 6773.0
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 6 100% 2 33.3% 1 1.3 0.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 88.4%
LONG 0.8%
TAGS 1.4%
FIELDS 3.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 1.8%
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 28.5%
2. DISPLAY command - no FIND results 21.3%
3. First word of command is invalid 19.0%
4. FIND command with invalid index name 8.9%
5. PS command - no previous screen 4.6%
6. Search term missing from search command 3.0%
7. DISPLAY command contains invalid word 2.7%
8. Valid command at an inappropriate time 1.7%
9. 1281 1.1%
10. Add-on search, no index name after verb 1.0%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 43.5%
2. GUIDE 22.8%
3. FIND (PSY DB) 5.4%
4. SEARCH (PSY DB) 4.3%
5. FIND LOCATION 3.3%
6. INDEXES (PSY DB) 3.3%
7. MAGS TEXT 2.2%
8. LOCATIONS 2.2%
9. Unrecognized term 2.2%
10. REQUEST 1.1%
11. All others 9.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. First word of command is invalid 13.2%
3. DISPLAY command-first of >1 screen 13.2%
4. DISPLAY command - middle of >1 screen 9.2%
5. FIND command with invalid index name 8.0%
6. FIND command with zero results 8.0%
7. DISPLAY command-complete in one screen 5.7%
8. DISPLAY command - last of >1 screen 4.0%
9. FIND command retrieves >1 book 2.9%
10. Valid command at an inappropriate time 1.7%
11. All others 10.3%
Ten most frequent SHOW requests:
1. HISTORY 61.9%
2. PSYCINFO NEWS 14.3%
3. SEARCH 14.3%
4. SETTINGS (INS/PSY DBS) 4.8%
5. UPDATE 4.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)