MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/01/99 through 06/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 587 2,120 2,707
Davis 2,128 255 2,383
Irvine 798 0 798
Los Angeles 475 487 962
Riverside 383 401 784
San Diego 116 441 557
San Francisco 446 5 451
Santa Barbara 456 352 808
Santa Cruz 427 375 802
Lawrence Berkeley 0 30 30
Lawrence Livermore 0 20 20
Los Alamos 0 0 0
Other - UC 36 191 227
Other-Network UC n/a 1,667 1,667
_______ ______ _____
5,852 6,344 12,196
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 11,127 39,383 394,742
BIO88 1,069 2,756 28,747
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 160 693 10,008
2-4 a.m. 77 232 1,694
4-6 a.m. 81 305 1,987
6-8 a.m. 237 690 4,873
8-10 a.m. 1,165 3,323 40,020
10-12 a.m. 2,160 7,084 65,909
12-2 p.m. 2,339 8,408 90,279
2-4 p.m. 2,629 8,923 84,032
4-6 p.m. 1,721 6,514 61,968
6-8 p.m. 681 2,332 26,464
8-10 p.m. 548 2,121 20,782
10-12 p.m. 398 1,514 15,473
__________ __________ __________ _________________
Total: 12,196 42,139 423,489
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 2,395 6,773 9,168
Davis 7,886 997 8,883
Irvine 3,451 0 3,451
Los Angeles 1,592 1,670 3,262
Riverside 1,344 1,215 2,559
San Diego 344 1,402 1,746
San Francisco 1,325 32 1,357
Santa Barbara 2,446 1,317 3,763
Santa Cruz 1,357 1,283 2,640
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 40 40
Los Alamos 0 0 0
Other - UC 47 539 586
Other-Network UC n/a 4,616 4,616
_______ ______ _____
22,187 19,952 42,139
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 24,789 67,683 92,472
Davis 70,339 8,906 79,245
Irvine 38,724 0 38,724
Los Angeles 15,777 17,965 33,742
Riverside 11,837 10,642 22,479
San Diego 1,824 15,668 17,492
San Francisco 10,839 258 11,097
Santa Barbara 25,721 12,922 38,643
Santa Cruz 11,021 15,876 26,897
Lawrence Berkeley 0 620 620
Lawrence Livermore 0 275 275
Los Alamos 0 0 0
Other - UC 1,036 5,752 6,788
Other-Network UC n/a 55,015 55,015
_______ ______ _____
211,907 211,582 423,489
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 5.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:50
Average session length (minutes:seconds) 13:44
Longest session recorded (minutes:seconds) 768:28
Average number of searches completed per session 3.4
Retrievals per search - median 10.0
Retrievals per search - average 809.5
Retrievals per search - standard deviation 8223.6
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 42.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 37,352 29.7%
DISPLAY (excluding automatic displays) 50,319 40.1%
BROWSE 25 0.0%
HELP 1,812 1.4%
EXPLAIN 1,644 1.3%
SET/RESET 4,851 3.9%
SHOW 423 0.3%
ADD ON (AND, OR, AND NOT) 4,787 3.8%
LOGON or LOGOFF 15,367 12.2%
COMMENT 1 0.0%
SAVE 4,014 3.2%
USE 81 0.1%
OTHER 4,918 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 11,905 29.8% 2,253 18.9% 19 137.9 553.1
TITLE WORD 5,923 14.8% 2,054 34.7% 12 496.5 3958.5
EXACT TITLE 311 0.8% 191 61.4% 1 210.7 1297.5
KEYWORD 16,570 41.5% 2,994 18.1% 35 1572.1 12060.2
JOURNAL 1,356 3.4% 516 38.1% 548 4782.8 13975.3
EXACT JOURNAL 546 1.4% 214 39.2% 788 2518.2 4560.2
SOURCE 41 0.1% 23 56.1% 23 4533.2 7435.1
CONFERENCE 2 0.0% 1 50.0% 139 139.0 0.0
BIOSYS NAMES 8 0.0% 6 75.0% 519 519.0 718.4
BIOSYS CODES 26 0.1% 6 23.1% 138 1832.2 3180.8
SUPERTAXA 102 0.3% 10 9.8% 57 281.7 883.8
MAJ CONCEPT CDES 5 0.0% 0 0.0% 12 23.8 17.3
CONCEPT CODES 55 0.1% 1 1.8% 201 13378.9 55950.6
PUBLICATION TYPE 90 0.2% 11 12.2% 30 896.3 5031.6
DATE 703 1.8% 120 17.1% 9 113.5 804.1
LANGUAGE 31 0.1% 2 6.5% 291 1373.6 3242.1
ADDED 4 0.0% 2 50.0% 15 15.0 17.0
ARTICLE 2 0.0% 0 0.0% 12 12.0 0.0
AUTHOR AFFIL. 204 0.5% 38 18.6% 56 1379.8 5252.1
ACCESSION NO. 16 0.0% 10 62.5% 1 1.0 0.0
ISSN 8 0.0% 3 37.5% 1,289 1781.0 1197.4
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1,482 3.7% 377 25.4% 7 491.7 3359.2
EXACT PE 365 0.9% 71 19.4% 3 45.6 192.3
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 1 0.0% 1 100% 0 0.0 0.0
Other indexes 149 0.4% 25 16.8% 75 386.3 1426.5
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 2,717 7.3% 754 27.8% 6 128.5 1310.4
Single 34,327 92.7% 7,373 21.5% 28 1144.5 9477.0
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:
CONCEPT CODES 25 100% 5 20.0% 3 4.7 5.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 86.9%
LONG 1.4%
TAGS 0.3%
FIELDS 1.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 3.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 36.4%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 10.0%
4. DISPLAY command contains invalid word 3.8%
5. PS command - no previous screen 3.4%
6. Valid command at an inappropriate time 1.8%
7. Search term missing from search command 1.7%
8. DATE search with unrecognized word 1.5%
9. Command contains escape or arrow key 1.2%
10. DISPLAY command-record numbers too large 1.1%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.9%
2. LOCATE (BIO DB) 16.9%
3. FIND 10.5%
4. COMMANDS 7.5%
5. INDEXES 7.4%
6. Unrecognized term 4.9%
7. ADDON SEARCH 3.6%
8. BIOSIS DATABASE 3.3%
9. DISPLAY 2.9%
10. DATABASES 2.1%
11. All others 23.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 9.8%
4. DISPLAY command-first of >1 screen 5.9%
5. FIND command retrieves >1 book 5.6%
6. FIND command with zero results 4.9%
7. DISPLAY command - middle of >1 screen 4.8%
8. DISPLAY command-complete in one screen 3.4%
9. NS command - no next screen 3.2%
10. DISPLAY command - last of >1 screen 2.7%
11. All others 24.1%
Ten most frequent SHOW requests:
1. HISTORY 43.9%
2. SEARCH 29.0%
3. MAIL STATUS 4.3%
4. BIOSIS NEWS 3.5%
5. SETTINGS 2.0%
6. TAXONOMIC GUIDE: ANIMALS 2.0%
7. GLOSSARY 2.0%
8. MAIL SETTINGS 1.8%
9. SYSTEM NEWS 1.5%
10. SUPERTAXA HIERARCHICAL TABLE 1.3%
11. All others 8.6%