MELVYL ABI DATABASE TELNET STATISTICS
Time period: 09/01/99 through 09/30/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 98 694 792
Davis 216 5 221
Irvine 163 0 163
Los Angeles 25 342 367
Riverside 25 7 32
San Diego 25 62 87
San Francisco 96 3 99
Santa Barbara 28 44 72
Santa Cruz 20 24 44
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 23 27 50
Other-Network UC n/a 303 303
_______ ______ _____
719 1,523 2,242
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 32 87 684
2-4 a.m. 27 144 1,553
4-6 a.m. 18 110 1,111
6-8 a.m. 43 135 1,564
8-10 a.m. 217 613 7,864
10-12 a.m. 362 1,146 13,298
12-2 p.m. 438 1,343 14,936
2-4 p.m. 535 1,461 17,750
4-6 p.m. 328 1,078 11,218
6-8 p.m. 107 367 5,191
8-10 p.m. 76 323 6,182
10-12 p.m. 59 237 3,668
__________ __________ __________ _________________
Total: 2,242 7,044 85,019
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 339 2,182 2,521
Davis 631 18 649
Irvine 576 0 576
Los Angeles 49 1,199 1,248
Riverside 40 24 64
San Diego 86 210 296
San Francisco 300 4 304
Santa Barbara 43 147 190
Santa Cruz 57 60 117
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 45 45
Los Alamos 0 0 0
Other - UC 47 94 141
Other-Network UC n/a 893 893
_______ ______ _____
2,168 4,876 7,044
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,413 28,461 30,874
Davis 6,938 283 7,221
Irvine 6,235 0 6,235
Los Angeles 307 16,353 16,660
Riverside 127 269 396
San Diego 531 3,254 3,785
San Francisco 2,872 0 2,872
Santa Barbara 327 2,456 2,783
Santa Cruz 774 2,578 3,352
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 508 508
Los Alamos 0 0 0
Other - UC 468 807 1,275
Other-Network UC n/a 9,058 9,058
_______ ______ _____
20,992 64,027 85,019
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 1.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 9:07
Average session length (minutes:seconds) 13:21
Longest session recorded (minutes:seconds) 130:34
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 1457.9
Retrievals per search - standard deviation 8224.4
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 60.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,164 25.7%
DISPLAY (excluding automatic displays) 10,453 43.6%
BROWSE 52 0.2%
SELECT 10 0.0%
HELP 467 1.9%
EXPLAIN 488 2.0%
SET/RESET 909 3.8%
SHOW 126 0.5%
ADD ON (AND, OR, AND NOT) 876 3.7%
LOGON or LOGOFF 2,835 11.8%
COMMENT 1 0.0%
SAVE 850 3.5%
USE 12 0.1%
OTHER 803 3.3%
2.1 Article Text
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DISPLAY TEXT commands 1,058
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 167
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 1,740 25.8% 417 24.0% 11 65.8 278.3
TITLE WORD 1,145 17.0% 403 35.2% 8 81.6 365.0
EXACT TITLE 102 1.5% 51 50.0% 6 78.0 143.8
JOURNAL 382 5.7% 141 36.9% 779 6419.4 18449.0
EXACT JOURNAL 193 2.9% 58 30.1% 433 6432.1 13168.4
SUBJECT 653 9.7% 372 57.0% 276 4581.4 15330.4
EXACT SUBJECT 54 0.8% 14 25.9% 555 7450.9 11987.1
KEYWORD 1,865 27.6% 279 15.0% 80 2143.0 10363.6
PUB TYPE 85 1.3% 5 5.9% 58 1008.9 3841.3
DATE 159 2.4% 31 19.5% 32 264.5 1040.1
ADDED 3 0.0% 0 0.0% 12,591 12591.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 0.1% 3 50.0% 123 513.0 748.5
GEOGRAPHIC NAME 6 0.1% 1 16.7% 246 1693.4 3390.8
SUBJ CATEGORY 3 0.0% 0 0.0% 132 13920.3 23992.2
COMPANY NAME 137 2.0% 39 28.5% 34 281.7 1528.5
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 1 0.0% 0 0.0% 400 400.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 116 1.7% 16 13.8% 6 80.8 336.8
EXACT PE 79 1.2% 9 11.4% 3 5.2 6.5
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 24 0.4% 2 8.3% 403 2733.9 4958.7
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 610 10.0% 161 26.4% 15 525.1 4103.4
Single 5,491 90.0% 1,514 27.6% 31 1854.6 9426.1
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:
SUBJECT 50 96.2% 22 44.0% 2 4.6 6.7
EXACT SUBJECT 2 3.8% 1 50.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 90.5%
LONG 1.0%
TAGS 0.1%
FIELDS 1.4%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 32.2%
2. NS command - no next screen 31.6%
3. FIND command with invalid index name 9.0%
4. DISPLAY command contains invalid word 4.2%
5. PS command - no previous screen 3.1%
6. Search term missing from search command 1.9%
7. Valid command at an inappropriate time 1.9%
8. Add-on search, no index name after verb 1.7%
9. Command contains escape or arrow key 1.2%
10. DISPLAY command-record numbers too large 1.2%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 19.5%
2. FIND (ABI DB) 9.8%
3. INDEXES (ABI DB) 7.4%
4. LOCATE (ARTICLE DBS) 7.0%
5. COMMANDS (ABI/PSY DBS) 6.4%
6. DISPLAY (ABI DB) 5.3%
7. ABI/INFORM DB 4.7%
8. Unrecognized term 4.5%
9. DATABASES 3.5%
10. ADDON SEARCH 3.5%
11. All others 28.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.9%
2. First word of command is invalid 12.4%
3. FIND command with zero results 9.0%
4. DISPLAY command - middle of >1 screen 7.1%
5. FIND command with invalid index name 6.9%
6. FIND command retrieves >1 book 5.3%
7. DISPLAY command-first of >1 screen 5.0%
8. NS command - no next screen 3.0%
9. DISPLAY command-complete in one screen 2.7%
10. Multi-index search with zero results 2.6%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 39.0%
2. MAIL STATUS 24.6%
3. SEARCH 16.9%
4. SETTINGS (ABI DB) 5.9%
5. DISPLAY 3.4%
6. MAIL SETTINGS 2.5%
7. ABI NEWS 1.7%
8. SYSTEM NEWS 1.7%
9. PUBLICATION TYPES (ABI DB) 0.8%
10. GLOSSARY 0.8%
11. All others 2.5%