MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/23/01 through 06/29/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 7 261 268
Davis 93 1 94
Irvine 61 0 61
Los Angeles 0 170 170
Riverside 0 3 3
San Diego 67 142 209
San Francisco 24 0 24
Santa Barbara 0 59 59
Santa Cruz 7 12 19
Lawrence Berkeley 0 24 24
Lawrence Livermore 0 40 40
Los Alamos 0 0 0
Other - UC 0 74 74
Other-Network UC n/a 551 551
_______ ______ _____
259 1,337 1,596
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 982 2,379 19,665
INS90 248 532 2,106
INS85 147 257 1,082
INS80 124 224 992
INS69 95 244 2,237
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 35 106 1,014
2-4 a.m. 30 81 837
4-6 a.m. 46 161 1,391
6-8 a.m. 72 168 1,544
8-10 a.m. 218 502 2,632
10-12 a.m. 288 560 4,480
12-2 p.m. 269 554 3,064
2-4 p.m. 305 743 4,966
4-6 p.m. 192 424 3,913
6-8 p.m. 93 223 1,608
8-10 p.m. 11 39 209
10-12 p.m. 37 75 424
__________ __________ __________ _________________
Total: 1,596 3,636 26,082
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 9 521 530
Davis 233 1 234
Irvine 193 0 193
Los Angeles 0 392 392
Riverside 0 8 8
San Diego 181 300 481
San Francisco 107 0 107
Santa Barbara 0 128 128
Santa Cruz 30 20 50
Lawrence Berkeley 0 58 58
Lawrence Livermore 0 113 113
Los Alamos 0 0 0
Other - UC 0 263 263
Other-Network UC n/a 1,079 1,079
_______ ______ _____
753 2,883 3,636
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 59 4,304 4,363
Davis 2,240 1 2,241
Irvine 2,051 0 2,051
Los Angeles 0 2,578 2,578
Riverside 0 46 46
San Diego 1,198 3,038 4,236
San Francisco 614 0 614
Santa Barbara 0 1,262 1,262
Santa Cruz 62 113 175
Lawrence Berkeley 0 448 448
Lawrence Livermore 0 377 377
Los Alamos 0 0 0
Other - UC 0 2,042 2,042
Other-Network UC n/a 5,649 5,649
_______ ______ _____
6,224 19,858 26,082
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 5.7
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) 9:56
Average session length (minutes:seconds) 12:50
Longest session recorded (minutes:seconds) 117:53
Average number of searches completed per session 2.2
Retrievals per search - median 4.0
Retrievals per search - average 817.8
Retrievals per search - standard deviation 17102
Percent of searches completed with 0 results 28.9%
Percent of searches entered that are long 6.4%
Percent of long searches completed
(includes partial results) 74.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,245 31.0%
DISPLAY (excluding automatic displays) 3,844 36.7%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 63 0.6%
EXPLAIN 84 0.8%
SET/RESET 979 9.4%
SHOW 22 0.2%
ADD ON (AND, OR, AND NOT) 391 3.7%
LOGON or LOGOFF 1,310 12.5%
COMMENT 0 0.0%
SAVE 157 1.5%
USE 4 0.0%
OTHER 368 3.5%
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 1,589 44.8% 356 22.4% 14 153.5 1256.4
TITLE WORD 754 21.3% 349 46.3% 4 92.5 561.5
EXACT TITLE 19 0.5% 15 78.9% 2 11.0 19.3
JOURNAL 90 2.5% 49 54.4% 383 5769.5 11188.6
EXACT JOURNAL 16 0.5% 9 56.3% 209 1463.1 3327.9
SUBJECT 134 3.8% 35 26.1% 4 278.5 995.5
EXACT SUBJECT 7 0.2% 3 42.9% 4 4120.3 8234.5
THESAURUS 5 0.1% 4 80.0% 11,799 11799.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 620 17.5% 127 20.5% 22 3170.6 36608.1
SUBFILE 3 0.1% 0 0.0% 36 83.0 94.7
FORM 32 0.9% 5 15.6% 23 96.9 175.1
DATE 41 1.2% 14 34.1% 8 41.6 61.7
ADDED 16 0.5% 14 87.5% 3 2.5 2.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 50 1.4% 15 30.0% 7 384.5 1207.0
CONFERENCE 11 0.3% 7 63.6% 269 5328.5 10288.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 13 0.4% 3 23.1% 25 144.0 368.7
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 134 3.8% 25 18.7% 11 92.2 211.6
EXACT PE 12 0.3% 1 8.3% 6 25.5 60.7
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 0 0.0% 0 0.0% 0 0.0 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 350 11.0% 124 35.4% 3 125.1 985.3
Single 2,841 89.0% 780 27.5% 17 1012.2 18052.3
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 7 100% 3 42.9% 33 60.0 75.3
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 80.7%
LONG 4.1%
TAGS 0.1%
FIELDS 7.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 12.7%
Ten most frequent errors:
1. First word of command is invalid 57.2%
2. NS command - no next screen 26.7%
3. FIND command with invalid index name 3.7%
4. Max. # of ports to a Z39 db are in use 2.4%
5. DISPLAY command contains invalid word 1.4%
6. PS command - no previous screen 1.0%
7. DISPLAY command - no FIND results 0.9%
8. Add-on search, no index name after verb 0.7%
9. Search term missing from search command 0.6%
10. NS of SHOW/EXP command-no next screen 0.6%
11. All others 4.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.5%
2. DATABASES 10.7%
3. INSPEC BACKFILES 9.5%
4. INSPEC DATABASES 8.3%
5. 1752 7.1%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 6.0%
7. GUIDE (INSPEC DBS) 4.8%
8. INDEXES (INSPEC DBS) 4.8%
9. I051 3.6%
10. Unrecognized term 3.6%
11. All others 26.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.1%
2. First word of command is invalid 15.0%
3. FIND command with invalid index name 8.2%
4. NS command - no next screen 4.8%
5. FIND command retrieves >1 book 4.8%
6. DISPLAY command - middle of >1 screen 4.8%
7. Multi-index search with zero results 4.8%
8. Add-on without index name after verb 4.1%
9. FIND command with zero results 4.1%
10. FIND command retrieves 1 book 2.7%
11. All others 25.9%
Ten most frequent SHOW requests:
1. HISTORY 68.2%
2. INSPEC NEWS 18.2%
3. SYSTEM NEWS 4.5%
4. SEARCH 4.5%
5. DATABASES 4.5%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)