MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 24 1,560 1,584
Davis 309 16 325
Irvine 527 0 527
Los Angeles 2 585 587
Riverside 43 32 75
San Diego 249 796 1,045
San Francisco 91 0 91
Santa Barbara 31 287 318
Santa Cruz 24 117 141
Lawrence Berkeley 0 230 230
Lawrence Livermore 0 180 180
Los Alamos 0 0 0
Other - UC 3 388 391
Other-Network UC n/a 1,734 1,734
_______ ______ _____
1,303 5,925 7,228
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 4,413 11,100 515,270
INS90 1,023 1,923 11,861
INS85 691 1,233 8,188
INS80 574 1,016 4,567
INS69 527 1,049 8,046
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 163 371 3,105
2-4 a.m. 151 387 2,074
4-6 a.m. 115 278 1,613
6-8 a.m. 287 585 4,892
8-10 a.m. 810 1,659 10,059
10-12 a.m. 1,288 2,616 21,496
12-2 p.m. 1,056 2,224 20,828
2-4 p.m. 1,209 2,560 28,800
4-6 p.m. 1,069 2,658 161,288
6-8 p.m. 476 1,246 100,935
8-10 p.m. 307 852 90,872
10-12 p.m. 297 885 101,970
__________ __________ __________ _________________
Total: 7,228 16,321 547,932
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 45 3,369 3,414
Davis 760 42 802
Irvine 1,652 0 1,652
Los Angeles 4 1,183 1,187
Riverside 87 103 190
San Diego 543 2,138 2,681
San Francisco 388 0 388
Santa Barbara 65 567 632
Santa Cruz 86 247 333
Lawrence Berkeley 0 534 534
Lawrence Livermore 0 486 486
Los Alamos 0 0 0
Other - UC 9 673 682
Other-Network UC n/a 3,340 3,340
_______ ______ _____
3,639 12,682 16,321
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 797 30,230 31,027
Davis 6,742 222 6,964
Irvine 13,647 0 13,647
Los Angeles 15 10,119 10,134
Riverside 851 388 1,239
San Diego 2,739 439,154 441,893
San Francisco 2,865 0 2,865
Santa Barbara 391 4,626 5,017
Santa Cruz 345 2,158 2,503
Lawrence Berkeley 0 5,904 5,904
Lawrence Livermore 0 2,941 2,941
Los Alamos 0 0 0
Other - UC 17 6,260 6,277
Other-Network UC n/a 17,521 17,521
_______ ______ _____
28,409 519,523 547,932
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 5.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.0
Standard deviation in seconds 0.0
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:20
Average session length (minutes:seconds) 11:32
Longest session recorded (minutes:seconds) 381:01
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 963.7
Retrievals per search - standard deviation 16212
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 78.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 15,046 8.4%
DISPLAY (excluding automatic displays) 149,282 83.0%
BROWSE 780 0.4%
SELECT 2 0.0%
HELP 324 0.2%
EXPLAIN 543 0.3%
SET/RESET 4,361 2.4%
SHOW 146 0.1%
ADD ON (AND, OR, AND NOT) 1,275 0.7%
LOGON or LOGOFF 6,449 3.6%
COMMENT 0 0.0%
SAVE 653 0.4%
USE 20 0.0%
OTHER 1,752 1.0%
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 6,747 40.5% 1,610 23.9% 14 85.3 406.7
TITLE WORD 3,266 19.6% 1,363 41.7% 6 157.6 1209.7
EXACT TITLE 773 4.6% 334 43.2% 1 4.1 20.1
JOURNAL 463 2.8% 182 39.3% 34 4050.9 23523.1
EXACT JOURNAL 158 0.9% 66 41.8% 6 520.8 1248.7
SUBJECT 313 1.9% 86 27.5% 101 864.5 2788.2
EXACT SUBJECT 65 0.4% 9 13.8% 552 1434.3 3708.9
THESAURUS 22 0.1% 4 18.2% 663 19506.2 52024.5
EXACT THESAURUS 701 4.2% 17 2.4% 997 3880.5 16392.8
KEYWORD 2,896 17.4% 513 17.7% 26 2693.8 30258.4
SUBFILE 34 0.2% 8 23.5% 19 31.5 37.7
FORM 61 0.4% 12 19.7% 52 426.7 1199.1
DATE 284 1.7% 69 24.3% 24 373.1 1288.0
ADDED 31 0.2% 18 58.1% 14 19.8 18.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 178 1.1% 34 19.1% 14 231.1 1286.2
CONFERENCE 66 0.4% 33 50.0% 124 891.8 1689.8
LANGUAGE 1 0.0% 0 0.0% 52 52.0 0.0
CHEMICAL NAME 67 0.4% 40 59.7% 8 58.9 178.3
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 38 38.0 0.0
ID NUMBER 6 0.0% 1 16.7% 1 1.0 0.0
PERIODICAL 465 2.8% 103 22.1% 6 116.6 714.9
EXACT PE 59 0.4% 5 8.5% 4 27.6 139.1
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 7 0.0% 4 57.1% 25 19.0 10.4
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 1,736 11.7% 614 35.4% 5 178.4 1256.7
Single 13,152 88.3% 3,272 24.9% 19 1157.3 16208.3
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 61 7.8% 9 14.8% 22 40.7 46.3
EXACT THESAURUS 719 92.2% 3 0.4% 1 5.0 18.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.4%
SHORT 11.4%
LONG 0.3%
TAGS 0.3%
FIELDS 0.6%
BROWSE REVIEW 1.3%
BROWSE LONG 0.0%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 85.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 2.8%
Ten most frequent errors:
1. NS command - no next screen 38.1%
2. First word of command is invalid 22.6%
3. Invalid number in DISPLAY command 13.7%
4. FIND command with invalid index name 4.7%
5. DISPLAY command contains invalid word 2.5%
6. Max. # of ports to a Z39 db are in use 2.3%
7. PS command - no previous screen 1.5%
8. Search term missing from search command 1.2%
9. DISPLAY command - no FIND results 1.1%
10. Valid command at an inappropriate time 1.1%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.0%
2. INSPEC DATABASES 11.4%
3. INSPEC BACKFILES 11.2%
4. GUIDE (INSPEC DBS) 9.2%
5. INDEXES (INSPEC DBS) 6.6%
6. LOCATE (INS/PSY DBS) 5.5%
7. MAIL 4.4%
8. Unrecognized term 3.7%
9. 1752 3.5%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 2.8%
11. All others 27.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.0%
2. First word of command is invalid 16.1%
3. DISPLAY command-first of >1 screen 5.7%
4. FIND command with zero results 5.3%
5. FIND command with invalid index name 4.6%
6. DISPLAY command - middle of >1 screen 4.3%
7. DISPLAY command - last of >1 screen 4.0%
8. FIND command retrieves >1 book 3.7%
9. DISPLAY command-complete in one screen 3.2%
10. NS command - no next screen 3.1%
11. All others 27.0%
Ten most frequent SHOW requests:
1. HISTORY 65.5%
2. SEARCH 12.0%
3. INSPEC NEWS 5.6%
4. SETTINGS (INS/PSY DBS) 4.2%
5. INSPEC LOADING STATISTICS 2.8%
6. MAIL STATUS 2.8%
7. SYSTEM NEWS 1.4%
8. MAIL SETTINGS 1.4%
9. DISPLAY (MED/INS/PSY DBS) 1.4%
10. FIND DISPLAY 1.4%
11. All others 1.4%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)