MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/30/01 through 07/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 289 296
Davis 105 0 105
Irvine 79 0 79
Los Angeles 0 145 145
Riverside 5 16 21
San Diego 37 85 122
San Francisco 32 0 32
Santa Barbara 0 60 60
Santa Cruz 5 10 15
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 31 31
Los Alamos 0 0 0
Other - UC 0 43 43
Other-Network UC n/a 324 324
_______ ______ _____
270 1,039 1,309
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 763 1,852 15,037
INS90 200 372 3,290
INS85 149 232 1,835
INS80 109 174 1,631
INS69 88 186 1,667
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 63 122 1,424
2-4 a.m. 36 60 1,215
4-6 a.m. 24 54 585
6-8 a.m. 49 95 793
8-10 a.m. 132 317 1,983
10-12 a.m. 247 573 4,374
12-2 p.m. 181 378 2,966
2-4 p.m. 266 555 4,515
4-6 p.m. 166 378 3,080
6-8 p.m. 48 84 1,371
8-10 p.m. 28 71 516
10-12 p.m. 69 129 638
__________ __________ __________ _________________
Total: 1,309 2,816 23,460
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 12 716 728
Davis 224 0 224
Irvine 150 0 150
Los Angeles 0 277 277
Riverside 10 27 37
San Diego 105 189 294
San Francisco 144 0 144
Santa Barbara 0 105 105
Santa Cruz 6 13 19
Lawrence Berkeley 0 89 89
Lawrence Livermore 0 103 103
Los Alamos 0 0 0
Other - UC 0 95 95
Other-Network UC n/a 551 551
_______ ______ _____
651 2,165 2,816
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 173 7,491 7,664
Davis 1,412 0 1,412
Irvine 851 0 851
Los Angeles 0 1,830 1,830
Riverside 66 140 206
San Diego 307 1,234 1,541
San Francisco 870 0 870
Santa Barbara 0 1,953 1,953
Santa Cruz 15 229 244
Lawrence Berkeley 0 961 961
Lawrence Livermore 0 964 964
Los Alamos 0 0 0
Other - UC 0 802 802
Other-Network UC n/a 4,162 4,162
_______ ______ _____
3,694 19,766 23,460
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 5.9
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
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Median session length (minutes:seconds) 9:49
Average session length (minutes:seconds) 13:05
Longest session recorded (minutes:seconds) 481:45
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 1215.8
Retrievals per search - standard deviation 21065
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 5.7%
Percent of long searches completed
(includes partial results) 73.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,591 31.4%
DISPLAY (excluding automatic displays) 3,013 36.5%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 66 0.8%
EXPLAIN 96 1.2%
SET/RESET 767 9.3%
SHOW 27 0.3%
ADD ON (AND, OR, AND NOT) 225 2.7%
LOGON or LOGOFF 1,114 13.5%
COMMENT 0 0.0%
SAVE 42 0.5%
USE 0 0.0%
OTHER 321 3.9%
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 1,352 46.8% 309 22.9% 16 105.3 488.2
TITLE WORD 501 17.3% 225 44.9% 8 50.8 128.0
EXACT TITLE 35 1.2% 25 71.4% 1 1.3 0.7
JOURNAL 141 4.9% 38 26.9% 10 1475.7 7533.7
EXACT JOURNAL 30 1.0% 14 46.7% 57 342.5 719.8
SUBJECT 76 2.6% 23 30.3% 16 321.2 1567.9
EXACT SUBJECT 3 0.1% 0 0.0% 22 5535.3 9558.0
THESAURUS 4 0.1% 0 0.0% 50 2992.8 5916.9
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 503 17.4% 82 16.3% 17 3991.4 40214.1
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 5 0.2% 1 20.0% 50 42.3 27.1
DATE 27 0.9% 7 25.9% 76 450.1 1337.3
ADDED 11 0.4% 6 54.5% 21 20.4 12.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 104 3.6% 22 21.2% 20 213.9 1220.4
CONFERENCE 14 0.5% 6 42.9% 758 22083.8 55148.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 4 0.1% 1 25.0% 12 11.0 3.6
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 67 2.3% 12 17.9% 4 31.6 89.9
EXACT PE 5 0.2% 0 0.0% 216 2967.4 6320.1
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 6 0.2% 4 66.7% 15 15.0 19.8
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 330 12.9% 96 29.1% 8 131.1 885.2
Single 2,219 87.1% 581 26.2% 17 1322.3 20900.3
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 2 100% 0 0.0% 5 5.0 4.2
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.9%
SHORT 85.0%
LONG 1.7%
TAGS 0.3%
FIELDS 3.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 50.1%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 5.7%
4. DISPLAY command contains invalid word 2.1%
5. PS command - no previous screen 1.8%
6. Invalid SET DB INS command issued 1.7%
7. Valid command at an inappropriate time 1.3%
8. Max. # of ports to a Z39 db are in use 1.3%
9. DISPLAY command - no FIND results 1.2%
10. DISPLAY command-record numbers too large 1.2%
11. All others 9.1%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 14.6%
2. FIND (INSPEC DBS) 12.5%
3. INSPEC BACKFILES 10.4%
4. COMMANDS (INS/PSY/ABI/BIO DBS) 7.3%
5. INDEXES (INSPEC DBS) 7.3%
6. 1752 6.3%
7. Unrecognized term 5.2%
8. MAIL 3.1%
9. GUIDE (INSPEC DBS) 3.1%
10. FIND (INSPEC DBS) 3.1%
11. All others 27.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 15.4%
2. First word of command is invalid 13.6%
3. FIND command with zero results 11.1%
4. DISPLAY command - middle of >1 screen 8.6%
5. Multi-index search with zero results 6.2%
6. NS of SHOW/EXP command-no next screen 6.2%
7. NS command - no next screen 4.9%
8. DISPLAY command-complete in one screen 3.7%
9. FIND command retrieves 1 book 3.1%
10. FIND command retrieves >1 book 3.1%
11. All others 24.1%
Ten most frequent SHOW requests:
1. HISTORY 68.0%
2. SETTINGS (INS/PSY DBS) 8.0%
3. INSPEC NEWS 8.0%
4. INSPEC LOADING STATISTICS 8.0%
5. SYSTEM NEWS 4.0%
6. SEARCH 4.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)