MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/16/01 through 06/22/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 304 316
Davis 52 2 54
Irvine 101 0 101
Los Angeles 0 104 104
Riverside 7 6 13
San Diego 77 117 194
San Francisco 31 0 31
Santa Barbara 1 29 30
Santa Cruz 9 36 45
Lawrence Berkeley 0 38 38
Lawrence Livermore 0 27 27
Los Alamos 0 0 0
Other - UC 0 57 57
Other-Network UC n/a 332 332
_______ ______ _____
290 1,052 1,342
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 836 1,923 17,401
INS90 190 400 1,686
INS85 126 226 1,213
INS80 98 174 574
INS69 92 179 1,179
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 50 661
2-4 a.m. 40 96 776
4-6 a.m. 23 63 346
6-8 a.m. 43 147 901
8-10 a.m. 140 307 1,721
10-12 a.m. 331 705 4,941
12-2 p.m. 198 414 2,748
2-4 p.m. 240 444 4,078
4-6 p.m. 152 317 2,997
6-8 p.m. 68 159 1,014
8-10 p.m. 38 80 938
10-12 p.m. 42 120 932
__________ __________ __________ _________________
Total: 1,342 2,902 22,053
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 25 717 742
Davis 154 3 157
Irvine 208 0 208
Los Angeles 0 242 242
Riverside 13 18 31
San Diego 157 237 394
San Francisco 60 0 60
Santa Barbara 2 94 96
Santa Cruz 15 77 92
Lawrence Berkeley 0 72 72
Lawrence Livermore 0 71 71
Los Alamos 0 0 0
Other - UC 0 145 145
Other-Network UC n/a 592 592
_______ ______ _____
634 2,268 2,902
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 4,255 4,271
Davis 1,083 11 1,094
Irvine 3,862 0 3,862
Los Angeles 0 2,324 2,324
Riverside 160 61 221
San Diego 630 2,044 2,674
San Francisco 397 0 397
Santa Barbara 11 616 627
Santa Cruz 22 623 645
Lawrence Berkeley 0 879 879
Lawrence Livermore 0 640 640
Los Alamos 0 0 0
Other - UC 0 1,935 1,935
Other-Network UC n/a 2,484 2,484
_______ ______ _____
6,181 15,872 22,053
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 5.5
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
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Median session length (minutes:seconds) 6:42
Average session length (minutes:seconds) 11:00
Longest session recorded (minutes:seconds) 205:41
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 1568.2
Retrievals per search - standard deviation 22112
Percent of searches completed with 0 results 28.9%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 74.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,567 31.1%
DISPLAY (excluding automatic displays) 2,808 34.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 52 0.6%
EXPLAIN 52 0.6%
SET/RESET 790 9.6%
SHOW 25 0.3%
ADD ON (AND, OR, AND NOT) 335 4.1%
LOGON or LOGOFF 1,179 14.3%
COMMENT 0 0.0%
SAVE 79 1.0%
USE 2 0.0%
OTHER 368 4.5%
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 1,170 42.3% 272 23.2% 14 66.9 206.4
TITLE WORD 700 25.3% 317 45.3% 5 40.1 120.6
EXACT TITLE 36 1.3% 23 63.9% 5 14.1 20.9
JOURNAL 112 4.1% 42 37.5% 643 5819.2 15503.4
EXACT JOURNAL 22 0.8% 11 50.0% 106 401.5 754.8
SUBJECT 62 2.2% 29 46.8% 16 520.2 1284.7
EXACT SUBJECT 6 0.2% 0 0.0% 7 2751.0 6721.9
THESAURUS 4 0.1% 0 0.0% 10 2955.3 5895.8
EXACT THESAURUS 1 0.0% 0 0.0% 12,867 12867.0 0.0
KEYWORD 460 16.6% 81 17.6% 77 6127.5 42836.3
SUBFILE 4 0.1% 0 0.0% 44 44.3 23.1
FORM 9 0.3% 0 0.0% 44 2074.4 5976.9
DATE 43 1.6% 15 34.9% 19 82.3 168.3
ADDED 13 0.5% 6 46.2% 5 6.9 6.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 16 0.6% 6 37.5% 5 184.8 385.5
CONFERENCE 27 1.0% 3 11.1% 330 1070.0 1475.2
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 4 0.1% 0 0.0% 159 151.0 149.5
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 67 2.4% 16 23.9% 7 40.8 102.1
EXACT PE 7 0.3% 0 0.0% 6 11.3 15.2
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 1 0.0% 0 0.0% 29 29.0 0.0
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 223 8.8% 85 38.1% 6 249.3 1825.0
Single 2,309 91.2% 646 28.0% 17 1714.2 20843.8
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 86.1%
LONG 1.8%
TAGS 0.1%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 0.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 40.8%
2. First word of command is invalid 29.5%
3. FIND command with invalid index name 6.3%
4. Max. # of ports to a Z39 db are in use 4.1%
5. DISPLAY command contains invalid word 2.5%
6. Search term missing from search command 2.0%
7. Single letter keyword search 2.0%
8. Add-on search, no index name after verb 1.7%
9. PS command - no previous screen 0.9%
10. Index invalid in current database 0.9%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 21.2%
2. INSPEC DATABASES 9.6%
3. FIND (INSPEC DBS) 9.6%
4. 1752 9.6%
5. INDEXES (INSPEC DBS) 7.7%
6. DATABASES 7.7%
7. GUIDE (INSPEC DBS) 5.8%
8. MAIL 3.8%
9. LOCATE (INS/PSY DBS) 3.8%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.8%
11. All others 17.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.2%
2. First word of command is invalid 16.3%
3. NS command - no next screen 9.6%
4. FIND command with invalid index name 9.6%
5. FIND command with zero results 7.7%
6. FIND command retrieves 1 book 7.7%
7. DISPLAY command - middle of >1 screen 5.8%
8. FIND command retrieves >1 book 2.9%
9. 278 2.9%
10. Multi-index search with zero results 2.9%
11. All others 14.4%
Ten most frequent SHOW requests:
1. HISTORY 72.0%
2. INSPEC LOADING STATISTICS 16.0%
3. GLOSSARY 4.0%
4. SYSTEM NEWS 4.0%
5. MAIL STATUS 4.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)