MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 102 2,066 2,168
Davis 258 28 286
Irvine 699 0 699
Los Angeles 65 1,193 1,258
Riverside 38 53 91
San Diego 266 998 1,264
San Francisco 122 0 122
Santa Barbara 79 626 705
Santa Cruz 56 75 131
Lawrence Berkeley 0 273 273
Lawrence Livermore 0 588 588
Los Alamos 0 2 2
Other - UC 10 243 253
Other-Network UC n/a 1,718 1,718
_______ ______ _____
1,695 7,863 9,558
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 6,158 16,363 138,607
INS90 1,326 2,542 16,901
INS85 846 1,625 8,376
INS80 629 1,147 4,967
INS69 599 1,341 10,601
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 316 759 6,762
2-4 a.m. 225 544 3,325
4-6 a.m. 187 408 2,772
6-8 a.m. 355 876 6,146
8-10 a.m. 984 2,158 16,308
10-12 a.m. 1,677 3,905 27,706
12-2 p.m. 1,531 3,592 27,322
2-4 p.m. 1,681 4,172 33,453
4-6 p.m. 1,399 3,509 30,519
6-8 p.m. 545 1,343 12,282
8-10 p.m. 342 880 6,897
10-12 p.m. 316 872 5,960
__________ __________ __________ _________________
Total: 9,558 23,018 179,452
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 206 5,191 5,397
Davis 668 76 744
Irvine 2,412 0 2,412
Los Angeles 153 2,617 2,770
Riverside 88 102 190
San Diego 947 2,361 3,308
San Francisco 292 0 292
Santa Barbara 163 1,363 1,526
Santa Cruz 156 217 373
Lawrence Berkeley 0 579 579
Lawrence Livermore 0 1,562 1,562
Los Alamos 0 3 3
Other - UC 29 650 679
Other-Network UC n/a 3,183 3,183
_______ ______ _____
5,114 17,904 23,018
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,113 36,955 38,068
Davis 4,294 383 4,677
Irvine 25,349 0 25,349
Los Angeles 4,654 24,201 28,855
Riverside 425 797 1,222
San Diego 4,259 13,922 18,181
San Francisco 1,896 0 1,896
Santa Barbara 797 13,682 14,479
Santa Cruz 646 1,557 2,203
Lawrence Berkeley 0 6,797 6,797
Lawrence Livermore 0 15,875 15,875
Los Alamos 0 19 19
Other - UC 290 4,592 4,882
Other-Network UC n/a 16,949 16,949
_______ ______ _____
43,723 135,729 179,452
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.9
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 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:45
Average session length (minutes:seconds) 12:34
Longest session recorded (minutes:seconds) 332:54
Average number of searches completed per session 2.4
Retrievals per search - median 6.0
Retrievals per search - average 522.7
Retrievals per search - standard deviation 6401.0
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 70.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 20,885 30.9%
DISPLAY (excluding automatic displays) 25,176 37.2%
BROWSE 15 0.0%
SELECT 0 0.0%
HELP 650 1.0%
EXPLAIN 931 1.4%
SET/RESET 5,471 8.1%
SHOW 181 0.3%
ADD ON (AND, OR, AND NOT) 2,133 3.2%
LOGON or LOGOFF 8,724 12.9%
COMMENT 0 0.0%
SAVE 898 1.3%
USE 30 0.0%
OTHER 2,541 3.8%
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 10,028 44.1% 2,464 24.6% 14 70.9 280.5
TITLE WORD 4,580 20.2% 1,718 37.5% 6 125.9 2119.5
EXACT TITLE 78 0.3% 49 62.8% 1 41.6 115.7
JOURNAL 586 2.6% 222 37.9% 70 2030.7 8060.5
EXACT JOURNAL 222 1.0% 110 49.5% 8 2005.4 7003.4
SUBJECT 990 4.4% 350 35.4% 17 481.7 4470.3
EXACT SUBJECT 63 0.3% 26 41.3% 29 1707.3 3989.2
THESAURUS 72 0.3% 13 18.1% 1,525 3467.9 3697.0
EXACT THESAURUS 2 0.0% 0 0.0% 201 201.0 0.0
KEYWORD 4,743 20.9% 871 18.4% 31 1742.7 11051.7
SUBFILE 28 0.1% 4 14.3% 27 99.9 303.0
FORM 154 0.7% 14 9.1% 25 186.6 942.3
DATE 379 1.7% 103 27.2% 7 86.8 684.1
ADDED 38 0.2% 28 73.7% 14 14.8 7.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 194 0.9% 59 30.4% 20 260.3 836.7
CONFERENCE 108 0.5% 37 34.3% 100 781.3 1577.1
LANGUAGE 8 0.0% 2 25.0% 21 41.5 44.4
CHEMICAL NAME 57 0.3% 12 21.1% 12 779.4 3683.4
ISSN 3 0.0% 1 33.3% 127 127.0 39.6
ISBN 17 0.1% 1 5.9% 94 206.4 241.3
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 344 1.5% 90 26.2% 6 103.8 534.6
EXACT PE 21 0.1% 3 14.3% 8 76.8 284.3
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 11 0.0% 2 18.2% 28 444.7 842.2
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 2,082 10.1% 773 37.1% 5 202.4 3151.9
Single 18,478 89.9% 4,606 24.9% 17 639.3 6085.6
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:
THESAURUS 14 93.3% 6 42.9% 2 6.4 9.7
EXACT THESAURUS 1 6.7% 1 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 88.5%
LONG 1.9%
TAGS 0.6%
FIELDS 3.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. NS command - no next screen 44.9%
2. First word of command is invalid 27.9%
3. FIND command with invalid index name 7.3%
4. DISPLAY command contains invalid word 3.0%
5. Search term missing from search command 1.6%
6. PS command - no previous screen 1.4%
7. Invalid SET DB INS command issued 1.3%
8. DISPLAY command - no FIND results 1.0%
9. NS of SHOW/EXP command-no next screen 1.0%
10. Valid command at an inappropriate time 1.0%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 12.0%
2. INSPEC DATABASES 11.6%
3. INSPEC BACKFILES 10.0%
4. GUIDE (INSPEC DBS) 9.9%
5. INDEXES (INSPEC DBS) 6.3%
6. LOCATE (INS/PSY DBS) 5.5%
7. DATABASES 5.2%
8. Unrecognized term 4.7%
9. DISPLAY (INS/PSY DBS) 4.3%
10. MAIL 3.8%
11. All others 26.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.5%
2. First word of command is invalid 13.0%
3. FIND command with zero results 8.0%
4. NS command - no next screen 6.5%
5. FIND command with invalid index name 6.4%
6. DISPLAY command-first of >1 screen 4.9%
7. FIND command retrieves >1 book 4.8%
8. DISPLAY command - middle of >1 screen 4.6%
9. DISPLAY command - last of >1 screen 4.2%
10. DISPLAY command-complete in one screen 3.6%
11. All others 20.6%
Ten most frequent SHOW requests:
1. HISTORY 66.1%
2. SEARCH 8.3%
3. INSPEC LOADING STATISTICS 7.2%
4. MAIL STATUS 5.0%
5. INSPEC NEWS 3.9%
6. GLOSSARY 2.8%
7. SETTINGS (INS/PSY DBS) 1.1%
8. SYSTEM NEWS 1.1%
9. MAIL SETTINGS 1.1%
10. IAC LOADING STATISTICS 0.6%
11. All others 2.8%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)