MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 76 552 628
Davis 608 5 613
Irvine 198 0 198
Los Angeles 16 467 483
Riverside 29 111 140
San Diego 25 383 408
San Francisco 216 0 216
Santa Barbara 17 160 177
Santa Cruz 16 72 88
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 158 158
Other-Network UC n/a 541 541
_______ ______ _____
1,201 2,449 3,650
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 43 208 2,432
2-4 a.m. 88 1,121 5,148
4-6 a.m. 97 1,217 5,815
6-8 a.m. 68 198 3,140
8-10 a.m. 387 1,419 12,721
10-12 a.m. 663 2,261 18,859
12-2 p.m. 653 2,381 20,246
2-4 p.m. 768 2,773 25,930
4-6 p.m. 470 1,747 18,586
6-8 p.m. 179 709 8,166
8-10 p.m. 110 456 5,652
10-12 p.m. 124 607 6,423
__________ __________ __________ _________________
Total: 3,650 15,097 133,118
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 259 1,920 2,179
Davis 4,060 9 4,069
Irvine 735 0 735
Los Angeles 51 2,006 2,057
Riverside 94 490 584
San Diego 145 1,180 1,325
San Francisco 669 0 669
Santa Barbara 39 560 599
Santa Cruz 83 313 396
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 633 633
Other-Network UC n/a 1,851 1,851
_______ ______ _____
6,135 8,962 15,097
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,840 16,397 18,237
Davis 21,714 58 21,772
Irvine 8,623 0 8,623
Los Angeles 799 21,294 22,093
Riverside 1,061 4,051 5,112
San Diego 350 11,657 12,007
San Francisco 9,868 0 9,868
Santa Barbara 65 9,791 9,856
Santa Cruz 341 3,031 3,372
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 3,661 3,661
Other-Network UC n/a 18,517 18,517
_______ ______ _____
44,661 88,457 133,118
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 1.6
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) 6:06
Average session length (minutes:seconds) 12:12
Longest session recorded (minutes:seconds) 491:14
Average number of searches completed per session 4.1
Retrievals per search - median 6.0
Retrievals per search - average 590.0
Retrievals per search - standard deviation 6492.7
Percent of searches completed with 0 results 24.4%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 71.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,610 31.5%
DISPLAY (excluding automatic displays) 17,705 41.0%
BROWSE 108 0.3%
SELECT 20 0.0%
HELP 261 0.6%
EXPLAIN 282 0.7%
SET/RESET 1,262 2.9%
SHOW 105 0.2%
ADD ON (AND, OR, AND NOT) 1,482 3.4%
LOGON or LOGOFF 5,378 12.5%
COMMENT 0 0.0%
SAVE 1,838 4.3%
USE 3 0.0%
OTHER 1,213 2.8%
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 6,537 35.4% 1,191 18.2% 15 55.0 199.0
TITLE WORD 1,216 6.6% 370 30.4% 9 150.1 1155.4
EXACT TITLE 104 0.6% 40 38.5% 2 37.1 134.7
JOURNAL 275 1.5% 82 29.8% 403 2671.0 5977.2
EXACT JOURNAL 244 1.3% 56 22.9% 276 1403.5 2933.8
SUBJECT 670 3.6% 318 47.5% 212 5038.1 16368.4
EXACT SUBJECT 2,066 11.2% 1,057 51.2% 1 131.6 1979.2
KEYWORD 2,802 15.2% 445 15.9% 37 1795.8 12227.0
FORM/PUB TYPE 64 0.3% 4 6.3% 27 591.3 3487.6
DATE 2,910 15.7% 1,195 41.1% 3 23.4 129.0
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. 14 0.1% 6 42.9% 100 544.8 1175.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 16 0.1% 2 12.5% 49 169.4 359.6
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 69 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 159 0.9% 35 22.0% 6 45.8 116.0
EXACT PE 28 0.2% 2 7.1% 3 7.7 12.6
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 1,303 7.1% 370 28.4% 1 980.1 9706.2
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 3,638 27.0% 1,385 38.1% 3 220.3 4409.5
Single 9,859 73.0% 2,035 20.6% 27 938.6 7777.1
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 92 85.2% 27 29.3% 2 5.8 9.1
EXACT SUBJECT 16 14.8% 4 25.0% 1 1.2 0.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 83.6%
LONG 1.2%
TAGS 3.1%
FIELDS 6.7%
BROWSE REVIEW 0.4%
BROWSE LONG 0.2%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 28.2%
2. DISPLAY command - no FIND results 25.0%
3. First word of command is invalid 19.1%
4. FIND command with invalid index name 7.3%
5. DISPLAY command contains invalid word 3.6%
6. PS command - no previous screen 2.8%
7. Valid command at an inappropriate time 1.9%
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 1.0%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.3%
2. LOCATE (INS/PSY DBS) 17.0%
3. FIND (PSY DB) 8.5%
4. COMMANDS (ABI/PSY DBS) 6.4%
5. DISPLAY (INS/PSY DBS) 5.7%
6. INDEXES (PSY DB) 4.3%
7. MAIL 3.5%
8. Unrecognized term 3.5%
9. DATABASES 3.2%
10. SEARCH (PSY DB) 2.8%
11. All others 22.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.9%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 8.3%
4. FIND command with zero results 7.0%
5. DISPLAY command - middle of >1 screen 6.6%
6. DISPLAY command-first of >1 screen 5.5%
7. DISPLAY command - last of >1 screen 4.1%
8. DISPLAY command-complete in one screen 3.5%
9. Multi-index search with zero results 2.8%
10. FIND command retrieves >1 book 2.4%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 68.1%
2. SEARCH 16.7%
3. SETTINGS (INS/PSY DBS) 2.8%
4. PSYCINFO NEWS 2.8%
5. MAIL STATUS 2.8%
6. PUBLICATION TYPES (PSY DB) 1.4%
7. SYSTEM NEWS 1.4%
8. MAIL SETTINGS 1.4%
9. DISPLAY (MED/INS/PSY DBS) 1.4%
10. UPDATE 1.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)