MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 511 521
Davis 52 3 55
Irvine 124 0 124
Los Angeles 4 234 238
Riverside 4 2 6
San Diego 73 277 350
San Francisco 34 0 34
Santa Barbara 15 76 91
Santa Cruz 7 51 58
Lawrence Berkeley 0 144 144
Lawrence Livermore 0 66 66
Los Alamos 0 0 0
Other - UC 6 68 74
Other-Network UC n/a 431 431
_______ ______ _____
329 1,863 2,192
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,260 2,899 30,783
INS90 316 481 2,641
INS85 252 392 1,993
INS80 199 314 1,573
INS69 165 342 2,715
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 104 1,008
2-4 a.m. 40 119 563
4-6 a.m. 26 61 584
6-8 a.m. 102 182 1,286
8-10 a.m. 255 555 6,808
10-12 a.m. 359 715 5,081
12-2 p.m. 290 600 5,455
2-4 p.m. 395 812 5,645
4-6 p.m. 353 638 7,821
6-8 p.m. 200 378 2,283
8-10 p.m. 59 120 1,443
10-12 p.m. 73 144 1,728
__________ __________ __________ _________________
Total: 2,192 4,428 39,705
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 34 1,051 1,085
Davis 134 12 146
Irvine 277 0 277
Los Angeles 6 470 476
Riverside 10 7 17
San Diego 221 512 733
San Francisco 61 0 61
Santa Barbara 16 170 186
Santa Cruz 22 107 129
Lawrence Berkeley 0 263 263
Lawrence Livermore 0 158 158
Los Alamos 0 0 0
Other - UC 15 114 129
Other-Network UC n/a 768 768
_______ ______ _____
796 3,632 4,428
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 181 9,538 9,719
Davis 1,439 200 1,639
Irvine 2,567 0 2,567
Los Angeles 93 10,223 10,316
Riverside 21 81 102
San Diego 718 3,486 4,204
San Francisco 609 0 609
Santa Barbara 264 1,728 1,992
Santa Cruz 115 363 478
Lawrence Berkeley 0 1,813 1,813
Lawrence Livermore 0 767 767
Los Alamos 0 0 0
Other - UC 107 922 1,029
Other-Network UC n/a 4,470 4,470
_______ ______ _____
6,114 33,591 39,705
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 10.1
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) 8:24
Average session length (minutes:seconds) 13:04
Longest session recorded (minutes:seconds) 318:43
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 921.2
Retrievals per search - standard deviation 16502
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 6.1%
Percent of long searches completed
(includes partial results) 79.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,098 31.5%
DISPLAY (excluding automatic displays) 4,475 34.4%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 85 0.7%
EXPLAIN 168 1.3%
SET/RESET 1,388 10.7%
SHOW 36 0.3%
ADD ON (AND, OR, AND NOT) 330 2.5%
LOGON or LOGOFF 1,734 13.3%
COMMENT 0 0.0%
SAVE 202 1.6%
USE 4 0.0%
OTHER 488 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 2,119 46.5% 502 23.7% 14 69.9 282.5
TITLE WORD 880 19.3% 384 43.6% 5 172.2 1359.3
EXACT TITLE 57 1.3% 40 70.2% 3 53.2 112.4
JOURNAL 144 3.2% 51 35.4% 24 2006.4 5511.6
EXACT JOURNAL 33 0.7% 12 36.4% 22 2964.7 6494.1
SUBJECT 184 4.0% 58 31.5% 40 1285.8 3924.2
EXACT SUBJECT 16 0.4% 6 37.5% 7 1596.3 4886.7
THESAURUS 5 0.1% 4 80.0% 11,048 11048.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 776 17.0% 129 16.6% 27 2894.5 30132.5
SUBFILE 1 0.0% 0 0.0% 61 61.0 0.0
FORM 6 0.1% 0 0.0% 65 98.7 107.7
DATE 50 1.1% 9 18.0% 9 79.3 250.9
ADDED 18 0.4% 15 83.3% 3 3.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 92 2.0% 23 25.0% 11 585.2 2136.7
CONFERENCE 14 0.3% 7 50.0% 30 139.4 180.7
LANGUAGE 4 0.1% 0 0.0% 119 689.5 1175.9
CHEMICAL NAME 29 0.6% 13 44.8% 16 52.1 82.7
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 110 2.4% 26 23.6% 5 133.8 673.2
EXACT PE 14 0.3% 2 14.3% 4 57.7 155.4
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% 17 17.0 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 493 12.2% 177 35.9% 6 227.4 1898.0
Single 3,552 87.8% 923 26.0% 19 914.6 15048.2
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% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.1%
SHORT 84.2%
LONG 2.9%
TAGS 0.6%
FIELDS 4.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 39.6%
2. First word of command is invalid 31.1%
3. FIND command with invalid index name 5.0%
4. Max. # of ports to a Z39 db are in use 3.7%
5. DISPLAY command contains invalid word 2.7%
6. PS command - no previous screen 2.1%
7. Valid command at an inappropriate time 1.8%
8. DISPLAY command - no FIND results 1.4%
9. NS of SHOW/EXP command-no next screen 1.3%
10. Command contains escape or arrow key 1.1%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 11.9%
2. INSPEC DATABASES 11.3%
3. GUIDE (INSPEC DBS) 11.3%
4. INSPEC BACKFILES 7.1%
5. DATABASES 6.0%
6. INDEXES (INSPEC DBS) 5.4%
7. FIND (INSPEC DBS) 5.4%
8. 1752 5.4%
9. Unrecognized term 4.2%
10. DISPLAY (INS/PSY DBS) 3.0%
11. All others 29.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.1%
2. First word of command is invalid 16.6%
3. FIND command retrieves >1 book 6.7%
4. DISPLAY command-complete in one screen 5.5%
5. FIND command with invalid index name 5.1%
6. SET command with invalid setting 4.7%
7. DISPLAY command-first of >1 screen 4.7%
8. DISPLAY command - middle of >1 screen 4.7%
9. FIND command with zero results 4.3%
10. DISPLAY command - last of >1 screen 3.6%
11. All others 19.8%
Ten most frequent SHOW requests:
1. HISTORY 37.1%
2. INSPEC LOADING STATISTICS 25.7%
3. INSPEC NEWS 8.6%
4. SYSTEM NEWS 5.7%
5. EXPERIMENTS 5.7%
6. MAIL STATUS 5.7%
7. SYSTEM1 NEWS 2.9%
8. SYSTEM6 NEWS 2.9%
9. EXPERIMENT 54 2.9%
10. SEARCH 2.9%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)