MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 10/01/00 through 10/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 64 2,206 2,270
Davis 340 21 361
Irvine 541 0 541
Los Angeles 62 839 901
Riverside 40 57 97
San Diego 431 982 1,413
San Francisco 117 0 117
Santa Barbara 172 360 532
Santa Cruz 78 196 274
Lawrence Berkeley 0 317 317
Lawrence Livermore 0 211 211
Los Alamos 0 0 0
Other - UC 8 308 316
Other-Network UC n/a 1,621 1,621
_______ ______ _____
1,853 7,118 8,971
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 5,766 14,157 122,481
INS90 1,262 2,207 12,906
INS85 762 1,258 7,851
INS80 631 1,115 6,767
INS69 550 1,233 7,999
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 224 484 2,877
2-4 a.m. 153 400 3,303
4-6 a.m. 131 304 2,715
6-8 a.m. 316 662 4,897
8-10 a.m. 928 2,009 14,475
10-12 a.m. 1,472 3,369 25,086
12-2 p.m. 1,411 2,972 27,291
2-4 p.m. 1,723 4,041 30,350
4-6 p.m. 1,420 3,103 24,833
6-8 p.m. 627 1,339 12,371
8-10 p.m. 333 809 5,687
10-12 p.m. 233 478 4,119
__________ __________ __________ _________________
Total: 8,971 19,970 158,004
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 100 4,657 4,757
Davis 936 51 987
Irvine 1,270 0 1,270
Los Angeles 120 1,951 2,071
Riverside 98 116 214
San Diego 1,257 1,972 3,229
San Francisco 329 0 329
Santa Barbara 407 871 1,278
Santa Cruz 195 465 660
Lawrence Berkeley 0 855 855
Lawrence Livermore 0 470 470
Los Alamos 0 0 0
Other - UC 23 762 785
Other-Network UC n/a 3,065 3,065
_______ ______ _____
4,735 15,235 19,970
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,212 37,082 38,294
Davis 6,443 192 6,635
Irvine 17,394 0 17,394
Los Angeles 1,632 16,635 18,267
Riverside 302 1,040 1,342
San Diego 6,725 18,973 25,698
San Francisco 2,186 0 2,186
Santa Barbara 1,758 8,070 9,828
Santa Cruz 945 2,863 3,808
Lawrence Berkeley 0 6,568 6,568
Lawrence Livermore 0 4,979 4,979
Los Alamos 0 0 0
Other - UC 50 5,616 5,666
Other-Network UC n/a 17,339 17,339
_______ ______ _____
38,647 119,357 158,004
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 5.4
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) 7:39
Average session length (minutes:seconds) 12:19
Longest session recorded (minutes:seconds) 671:33
Average number of searches completed per session 2.2
Retrievals per search - median 7.0
Retrievals per search - average 689.1
Retrievals per search - standard deviation 12887
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 5.0%
Percent of long searches completed
(includes partial results) 70.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 18,033 29.6%
DISPLAY (excluding automatic displays) 22,491 37.0%
BROWSE 4 0.0%
SELECT 1 0.0%
HELP 721 1.2%
EXPLAIN 913 1.5%
SET/RESET 5,192 8.5%
SHOW 158 0.3%
ADD ON (AND, OR, AND NOT) 1,937 3.2%
LOGON or LOGOFF 8,159 13.4%
COMMENT 0 0.0%
SAVE 808 1.3%
USE 22 0.0%
OTHER 2,427 4.0%
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 8,663 43.9% 2,017 23.3% 15 80.0 352.9
TITLE WORD 3,749 19.0% 1,434 38.3% 11 116.6 613.4
EXACT TITLE 114 0.6% 51 44.7% 1 33.4 166.2
JOURNAL 485 2.5% 212 43.7% 114 3059.4 10024.6
EXACT JOURNAL 208 1.1% 72 34.6% 365 2012.6 3494.6
SUBJECT 774 3.9% 258 33.3% 19 986.8 3812.9
EXACT SUBJECT 54 0.3% 8 14.8% 26 2644.4 6054.9
THESAURUS 18 0.1% 5 27.8% 3,617 8355.1 13950.5
EXACT THESAURUS 2 0.0% 0 0.0% 431 431.0 0.0
KEYWORD 3,970 20.1% 713 18.0% 28 2742.7 28496.0
SUBFILE 8 0.0% 0 0.0% 48 57.8 44.3
FORM 68 0.3% 22 32.4% 44 196.3 439.3
DATE 501 2.5% 108 21.6% 15 168.0 1366.2
ADDED 26 0.1% 11 42.3% 22 1329.0 5053.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 167 0.8% 31 18.6% 27 567.7 3060.0
CONFERENCE 100 0.5% 46 46.0% 145 1598.8 6594.1
LANGUAGE 2 0.0% 1 50.0% 349 349.0 0.0
CHEMICAL NAME 53 0.3% 20 37.7% 40 1363.5 6662.7
ISSN 5 0.0% 4 80.0% 2,356 2356.0 0.0
ISBN 3 0.0% 1 33.3% 329 328.5 61.5
ID NUMBER 12 0.1% 2 16.7% 1 1.0 0.0
PERIODICAL 636 3.2% 124 19.5% 6 39.5 145.8
EXACT PE 69 0.4% 10 14.5% 6 33.7 97.2
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 24 0.1% 3 12.5% 65 273.2 645.2
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 1,887 10.6% 664 35.2% 7 135.9 1053.0
Single 15,896 89.4% 3,817 24.0% 19 959.3 14973.7
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 3 75.0% 1 33.3% 1 1.0 0.0
EXACT THESAURUS 1 25.0% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 83.4%
LONG 2.9%
TAGS 0.1%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.3%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 41.0%
2. First word of command is invalid 28.7%
3. FIND command with invalid index name 6.6%
4. DISPLAY command contains invalid word 3.1%
5. 1189 2.1%
6. PS command - no previous screen 1.5%
7. Valid command at an inappropriate time 1.3%
8. DISPLAY command - no FIND results 1.3%
9. Search term missing from search command 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 11.0%
2. GUIDE (INSPEC DBS) 10.4%
3. FIND (INSPEC DBS) 10.2%
4. INDEXES (INSPEC DBS) 7.1%
5. LOCATE (INS/PSY DBS) 7.0%
6. ADDON SEARCH 7.0%
7. INSPEC BACKFILES 6.9%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.5%
9. MAIL 3.8%
10. DATABASES 3.6%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.3%
2. First word of command is invalid 13.9%
3. FIND command retrieves >1 book 8.3%
4. DISPLAY command-first of >1 screen 8.2%
5. FIND command with zero results 5.4%
6. FIND command with invalid index name 5.0%
7. DISPLAY command - middle of >1 screen 4.3%
8. NS command - no next screen 4.1%
9. DISPLAY command-complete in one screen 4.0%
10. DISPLAY command - last of >1 screen 3.5%
11. All others 21.0%
Ten most frequent SHOW requests:
1. HISTORY 50.3%
2. MAIL STATUS 12.1%
3. SEARCH 10.2%
4. SETTINGS (INS/PSY DBS) 4.5%
5. SYSTEM NEWS 3.8%
6. INSPEC LOADING STATISTICS 3.2%
7. GLOSSARY 3.2%
8. DATES 3.2%
9. MAIL SETTINGS 3.2%
10. PUBLICATION TYPES (INSPEC DBS) 1.9%
11. All others 4.5%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)