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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
0 y/ y( r  {* j. L- |to do-business
  b+ ^, w$ a% u  e7 q rt random 360
2 c! [/ q5 f/ E/ x/ G$ I: q fd 1# G. Q# Y# _5 S& M9 i4 l: |
ifelse(other turtles-here != nobody)[" ]& W. R, ~. i- G$ a2 o# m2 Z
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.( ], `& b* _% L& C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; R( E0 t3 h. z1 t8 v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 x4 |' f" ~% u, I* A   set [trade-record-one-len] of self length [trade-record-one] of self
7 E/ o: ^2 A: x8 }; y   set trade-record-current( list (timer) (random money-upper-limit))
& q  i% M$ q+ {( A7 h
. C! {& l/ U) G4 Z! O" q问题的提示如下:% y& p. \7 b9 L( q& M4 x, m6 Z
5 m7 C% b" F, A. ^6 B2 {
error while turtle 50 running OF in procedure DO-BUSINESS7 F; I6 t& J. u6 F% T) v! T! b
  called by procedure GO/ A) J' a- u& [; s2 |( i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ C* k2 ~/ v# a
(halted running of go)* l3 `6 F% r+ M5 y. [2 v' g' I

' d5 Q8 p" K7 r, I) o2 y这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~" g# E& J' I0 t$ g( z# n" H
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教8 l+ v8 h* F3 I. R
globals[
$ p/ M9 Y( r$ H& ^: Rxmax  [& i# o$ B$ g+ C
ymax$ d" ~4 A3 ~# ]6 E* d
global-reputation-list
4 ~) H& T: v8 G9 z. N0 |2 C
) ]6 i* Y% d8 `0 v3 @( G( S, U;;
每一个turtle的全局声誉都存在此LIST
( ?, j( ~2 c. f( O3 tcredibility-list$ v. ^( @5 h( E  Z
;;
每一个turtle的评价可信度
, |! B7 b5 |0 J. ?. {honest-service  L/ d* U) u* @' D5 {8 Q
unhonest-service7 ?* b  C$ j- i5 _9 j
oscillation
0 m+ o2 D7 O  c% W8 Y% F7 o* krand-dynamic
  a( J# D" d) r5 V]
) L( N) D0 [7 _  z8 _8 H: K& B- E8 U. a4 u" @0 J( p
turtles-own[
$ Q& C' c9 J/ P+ P' g6 Gtrade-record-all; H- @' U$ h1 B' u+ `4 Z
;;a list of lists,
trade-record-one组成
* l# p1 g  @6 Z  Q$ G8 h5 R9 c( _trade-record-one4 y' @: p: l3 k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 S7 x% W% |2 g) N" a& }' M& `4 I2 E4 Q: C% O. k- _
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]- j' E  T; ?& N! x3 W. ?: T
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
" k! H! d+ J4 o$ [6 ycredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
; @! g2 d+ E% d$ }: v6 |+ V- Cneighbor-total8 U& ~. j7 l% z- n! X' G+ C
;;
记录该turtle的邻居节点的数目
" `$ ~! F/ K, Q4 e* `- f* Otrade-time
! |6 q2 a! j2 Z3 S6 Z$ ^9 t7 P+ \;;
当前发生交易的turtle的交易时间% C* Y+ a& h' a; o9 n/ k
appraise-give
, A( A, J. R7 ]5 k;;
当前发生交易时给出的评价
6 x: v1 `  v5 N' X8 Lappraise-receive" g5 D( C, A' \9 _5 T7 A  c
;;
当前发生交易时收到的评价
+ B& H0 T/ |9 e" I: B8 `4 v% D7 Happraise-time$ M: Z& E8 p0 h& B. u. X
;;
当前发生交易时的评价时间
! v! J. e3 [, P6 Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 ^/ H2 S+ Y$ C0 y8 Mtrade-times-total
3 ?, L( i2 |$ E. n: E;;
与当前turtle的交易总次数
" v- ^$ e8 c3 k$ [" ~trade-money-total: i) f/ I8 I) K  N1 H& M
;;
与当前turtle的交易总金额& k' e6 r* j+ ~1 W/ |1 O
local-reputation; d  j% N3 B5 a, p' S; H+ `  r  K
global-reputation
& F7 I; ~. Y8 p/ y3 Y9 ^credibility+ L$ Z$ u+ O$ x9 j1 l; ^
;;
评价可信度,每次交易后都需要更新
$ g8 Y% l( K6 h9 r6 s6 Hcredibility-all: N9 y" f0 _. e$ N4 S9 ~
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 N# j( I0 l- T; \/ l
$ \7 |* f, u3 |& K  E
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
- L: e! U9 \+ }& l7 Rcredibility-one
* g0 q3 f$ a2 e3 a* r: B' M;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people5 W' \. J) W" [  p; ^+ \
global-proportion4 C0 U2 N4 T& ?0 N# B% M& b4 r& U  O
customer
6 p8 u* \1 s# lcustomer-no# P9 e! S3 D1 O" A  C; O- u7 ~
trust-ok
" j  D1 i+ e% A1 r! Etrade-record-one-len;;trade-record-one的长度
- t* {$ z3 l4 h. M: f  Q]
6 B/ R- H* R' z. c' C. F: ~8 L& n
;;setup procedure
- [' {0 r( G. f) ]! _: C; B0 ]$ s7 f: I' L" d6 L4 n
to setup
3 K- n) q, z) a) T  j2 b" `! D; i" K$ u% @* g+ a
ca
; {9 l( [+ X' y/ ~0 m7 W9 D' y

6 k2 N* ?9 m" t1 Tinitialize-settings

0 C4 v9 w/ J6 @5 B  H& m- W5 ~- e0 a; |( J
crt people [setup-turtles]
* l6 J3 v. M* T  z3 b. V5 \

. ^8 L3 i1 v$ @  P& `& ^6 ~reset-timer
; [( P$ p* q% ~/ _0 K6 Q
' f) d; ]  {% l+ B+ L' f- g
poll-class

$ x  ^' X$ s$ [6 i' J: T5 A! S- Y( F# @: a2 w! l
setup-plots

+ ?3 Q5 t% S) w$ p* E/ r  M
) h+ J* B( I; Y( o0 h3 |- D  V6 Ddo-plots
0 D: M6 n- ?) c4 I* K' S4 _7 a. ]
end
% d% H* g( A" d( }" X4 L4 u6 f$ X8 y* M: b% B8 c, ?! }
to initialize-settings. k: C1 ?( ~& l9 n9 P/ q7 W+ [; t

; Z3 ]! h- W& dset global-reputation-list []

; m" X3 v$ e  z) G
0 |2 }$ H" z( ?( J7 ]. pset credibility-list n-values people [0.5]
4 `8 h" b6 d3 O

- j; r$ }6 X7 ]set honest-service 0

" O( g# z; t3 z% f- z& y  j9 {* q$ s8 h. o4 j" K! W9 m
set unhonest-service 0
( s% r1 R& o- @* x7 `0 H) {2 a

3 k% \! W, Q( P+ J3 |$ E" Lset oscillation 0

  F2 G& f* `# B# f2 Q" c
9 p: y) M- [, P* J& _4 Uset rand-dynamic 0
( E, F, A, E; V) j
end
: n: e/ K# T/ m! i% v2 Q, z+ V# B( X( x5 y# t& G
to setup-turtles ; f9 V' ^& Y/ Z, d1 _2 x
set shape "person"3 A# g0 K8 _5 ~  _, I+ D0 A9 B0 n
setxy random-xcor random-ycor
8 f6 H7 j$ c4 U( U' eset trade-record-one []. d$ O1 p, [1 r
6 n9 F: f0 x$ B4 M
set trade-record-all n-values people [(list (? + 1) 0 0)] - |6 Z6 n0 H  B' x5 T. c; o, Z$ e

8 l  H# w" g. l# {+ ^0 i; n$ B8 gset trade-record-current []% s/ z  M+ ^! N& O9 t1 h
set credibility-receive []5 u# {7 \4 ]; P: ~4 {  G1 k; T# ]
set local-reputation 0.54 f5 e* Y9 L2 |+ j7 l8 G$ s
set neighbor-total 0
3 l; _' c! W$ W# o, cset trade-times-total 0
5 [! [& A( m# b9 l: v4 Aset trade-money-total 0! _6 T+ M  s) N
set customer nobody
3 S4 y6 C- k( Jset credibility-all n-values people [creat-credibility]; |" Q5 J. r5 {1 f2 r6 j* l
set credibility n-values people [-1]
+ _+ I* ?+ i0 [; }get-color( b. l$ T% F7 ^) c, D  F% R

8 D6 D; Z% Y7 |  _5 a  @! K2 V! n6 M$ ~end+ R% S- t( }4 |, M# k$ s! L9 [

9 [% C4 ^3 g2 U' `2 E( M2 q9 Qto-report creat-credibility
# W* E9 s0 n9 m0 Ereport n-values people [0.5]
: I" A! h$ L0 D4 u' iend. X: {# g, a8 L- ^. T) R

: E6 H/ s% S! j2 H6 A, [to setup-plots
& m* j3 i6 H- `7 x! P3 ^$ g* u
set xmax 30

# e. r6 D  ~  ?; l
# z1 N  g4 n5 P" E# o+ X  iset ymax 1.0
9 L$ I  a4 j  [& j( S7 d

6 _6 W$ p$ A- p0 ?5 k8 [) gclear-all-plots

, a1 j- K5 M- ^) P: d
- l$ `; {, V) y% [6 Z" f) W) i; Xsetup-plot1

% U+ {: W2 K( O7 ]
4 O) V8 o0 X" n( m* r0 Csetup-plot2

& Z& D7 Z0 w. ^0 ^% T
( k. G; Y! b* G0 \4 c/ lsetup-plot3
3 [9 ]: Y( ^1 L0 u6 K9 ]
end+ R* H, ]" s5 m9 q9 L$ ^

; E7 j3 ^- c# J* \' y;;run time procedures  c/ ~  n! `3 A5 Z* _( T
2 H+ G! ~8 x! T1 r; m: I  E9 P" v
to go* l6 c& c2 `. G' S3 y6 z
- U  I5 \9 n+ m) Z
ask turtles [do-business]
+ P0 N0 T1 e) I
end4 L9 B. r- q6 P- n

8 w- I" t( n& cto do-business . |( [) O$ C7 o- C$ k: _

+ n& P1 c) I, T" h; H% P
3 P$ R3 h; h  E! z: u, Xrt random 360

/ ~- }4 @0 K+ w+ E- t* ~' N6 m8 J, e) I+ Y3 M
fd 1

% D8 B! d  _- R: t
" x" f: I7 c2 I" i( qifelse(other turtles-here != nobody)[

% m( o$ h4 N* ]# Q8 {2 v# r* i: ?9 A% v2 e; \4 A8 w: u& v
set customer one-of other turtles-here

; Y( Y$ O2 J3 ]" o+ ^" {) \& J5 g4 L) a
;; set [customer] of customer myself

& Z+ v- k- ~3 n1 J
1 Q4 I- x) m5 k( O& U' Qset [trade-record-one] of self item (([who] of customer) - 1)3 x# }3 x+ l; Z9 J% H8 A8 l- ~
[trade-record-all]of self
) Z7 A# Z$ P+ J/ F0 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# ^9 U. h" Q" q/ H7 j$ R
  u+ v! }: J8 M- }set [trade-record-one] of customer item (([who] of self) - 1)1 v3 `4 |, P) P, w. @) E; O
[trade-record-all]of customer
. u$ x! i+ s, i

  v6 h& I% b2 S4 {$ n" Lset [trade-record-one-len] of self length [trade-record-one] of self
) M0 |( }9 o" @6 \6 ^- d, P$ L% \
2 r0 |+ F: X, w6 j1 A5 ^* v) I- n6 L5 d! A9 M
set trade-record-current( list (timer) (random money-upper-limit))

: f0 e6 [  G1 ]7 S
9 u# J! `7 v' v) q3 d5 Xask self [do-trust]1 K7 Q: b1 _7 ~. ~( b% C- e+ J2 b
;;
先求ij的信任度0 U! q1 e) f' A/ q7 W; l

; P8 V' I+ C8 V) v: a  yif ([trust-ok] of self)
6 N5 [+ d4 E. u( d" A;;
根据ij的信任度来决定是否与j进行交易[
$ a3 g& A, B* u4 {+ \: a4 c* `/ vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" c- |* g% D7 R" x/ W% H1 b. W' s3 k% |# V/ X5 j5 J
[
  Z& N3 H1 Y; f% e  @

. v" v9 o! O, K: d9 Y  ado-trade

" R9 Q3 y. @* k& e- E' j4 G* y! |: `: B1 \
update-credibility-ijl
* J* V, P0 m, I/ T, F2 @

8 w( I1 j; g! w/ v! Mupdate-credibility-list' J1 ?4 l' u/ k: ^9 r

/ {: Z3 N' z# g1 M' ^6 D; R3 Q- ?  M: z) V
update-global-reputation-list

6 E$ z6 [7 h" e- N+ b
* j) W( b4 W% O, |1 k8 F4 Ypoll-class

6 H* j6 ^9 o) K" j3 x. Y+ |1 w9 x2 k( j8 c  s- L' S6 f8 e" n
get-color

, h- K/ n5 b, V, I. Y8 ~  _: y
2 B) ^; D' Y+ M/ ^6 z3 P8 }]]
8 G: P9 H6 _7 M+ S
) h- T8 H# t" ]* c;;
如果所得的信任度满足条件,则进行交易5 E+ j0 @/ e. P% l0 b$ F
# p- u- W* A9 N. Y
[

9 T9 D7 U6 C2 F3 g0 ?, X: M% @4 e% Z6 U* z1 m& q
rt random 360

% U; Z9 `, M+ `4 F8 C- g( r8 U
fd 1
' a3 F* G: H# K+ w6 j2 C
8 i# K. h1 k; r( H2 C
]
& p+ k. J& y& ]$ e6 R

. N' b3 \9 \: s2 ~end
: h9 H+ o8 Z7 `! g
$ b( C- M/ g/ P$ G/ o
to do-trust
# Y! d- H% ?# ~# `5 G* L* _  F6 cset trust-ok False- y3 T1 l$ `+ E* O  @* |+ ]

- c6 Z" S+ V- m$ N5 Z! O& n  b% `

( u" X/ K& y, Glet max-trade-times 0. G6 U9 }# _4 z& r9 i# N) t9 f
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  r# C/ I1 _6 I  J, ]let max-trade-money 0
3 O9 K: x8 b6 d  y; e& K; W: [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 G! Q) f# Y- A" {) M0 jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ y& R) ^7 ~6 N2 g' x8 G+ Q& d

& K1 }# P: _$ X, X) g' d) d% T! w

/ c* R5 U, f7 Iget-global-proportion  A1 x2 P3 P) C  P% F
let trust-value5 n& K+ J3 v6 n0 k& O
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* b7 m! D8 n- _4 y, X
if(trust-value > trade-trust-value)
* \- J, N* B) r  A: f[set trust-ok true]/ ^, `0 C) L; ^) M
end
5 d: U$ ^: L% G, I; l" n# O' j& V8 {  O
to get-global-proportion$ ^- q6 `8 n$ N: L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) R9 B, X% ~4 N/ P) v6 h
[set global-proportion 0]
5 |, y; Q8 E- H# {[let i 0- t/ v3 A8 M  u' e" ?5 S, o
let sum-money 00 p* \) t, C: Y2 O
while[ i < people]( n& q- u1 Y% x3 v% Y  z- J
[
7 R) ?6 ~2 O4 E" Eif( length (item i
! m3 L0 m5 h3 N& F  [* p[trade-record-all] of customer) > 3 )
% X1 s! H" z6 |8 z
[7 w. Y% K9 \* a. D5 E: d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% I- P; E% m4 \, j; C$ \8 m* k' p9 Q
]8 P( F' f* c& E- Z
]; G& ?% X! V. M* v. ~; W
let j 0: x: }$ g( E3 {8 A
let note 0
: n9 I! n2 \3 I% m1 [while[ j < people]1 ~, g( I+ F) e  M+ u) a
[
4 A1 g% D% \! D+ S" Fif( length (item i8 O% v1 J& U! r' X  X: |
[trade-record-all] of customer) > 3 )

8 z3 o5 C$ T5 R  B( A) ]2 D[
( x+ E* i1 f1 Y! H* \: ~$ Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- p8 H# D5 r- B1 l# ]  ?( r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 ^: X4 o6 F5 D1 z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: M! @2 ~# }# [/ @. r]
3 r8 @' D$ p" M. U+ l$ n7 m- N7 b" \" s]# h' v4 T9 B! C, l$ \; g
set global-proportion note; s( f  U$ P! B/ c% B1 a
]
2 C  F) ?8 Q7 J+ Q7 W* t8 uend7 U0 B" T+ C' V. U9 g+ i
! h2 a& @3 S* `5 R+ }+ c
to do-trade
: G9 p) P0 k" L" Z;;
这个过程实际上是给双方作出评价的过程
0 w0 A6 R- y# d. Z5 P, N1 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: F7 {7 i6 T( \. Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 c* c8 H5 G9 b5 i. p  U
set trade-record-current lput(timer) trade-record-current+ i0 z6 C8 u" X7 W8 }, ]( m, u" H* q
;;
评价时间/ J, F1 y$ o: O8 U$ [  T# x8 X# c
ask myself [" o2 z  d% w' b/ p! g; u
update-local-reputation
" @7 K  {/ S. l/ E( Zset trade-record-current lput([local-reputation] of myself) trade-record-current
0 X3 j( h6 b/ ^: H/ e]& D4 I/ h% |1 D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 [2 O0 ?9 d, E* C0 D
;;
将此次交易的记录加入到trade-record-one' u7 p0 \4 K7 q. Z; j* f  e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- }4 h, a6 B* m1 S
let note (item 2 trade-record-current ). y2 g( v* K" @/ [' C, @
set trade-record-current
/ X7 z- k9 d+ d. b0 _# w) D(replace-item 2 trade-record-current (item 3 trade-record-current))
( v  g; n5 P: l
set trade-record-current4 v7 L( v, u  q7 X6 |- U+ h% J
(replace-item 3 trade-record-current note)
  r6 R1 {) Z: |# Z! F$ w% \% s2 m$ s: F" @% P
4 @6 I* S6 `' Y8 [
ask customer [/ [' T: _. ^* J0 T, [0 C( j6 G0 n
update-local-reputation
3 G9 d- M) d1 I3 }set trade-record-current8 R: o' e* J+ }8 N4 |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ Q- i/ g& q( \8 P1 C
]+ G' R; _# C7 `3 I9 Z+ N

1 v; h4 y( c3 N! b  i4 S

. B. m' B* _) m: Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. F/ l" L7 m4 }

6 f7 O+ w" ?. {8 c3 [8 F  m( ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' ^) L  }) G' F! T. \;;
将此次交易的记录加入到customertrade-record-all
! C( W0 p: x0 f/ q; k. {% F9 Y* aend
- _1 b* v$ w3 T) @
$ F, h( j! U7 }1 V% ^% n6 }to update-local-reputation
4 F% i5 K! f& K5 u* ]& |0 Z. eset [trade-record-one-len] of myself length [trade-record-one] of myself0 Y* c7 H# y+ r% x, g! y2 X
3 T3 q7 b, r& e5 k: C

! B' [9 ?% P  [$ D! i+ E3 ?;;if [trade-record-one-len] of myself > 3
, L5 O: N/ o- m0 i
update-neighbor-total
* A5 S- }& r8 N4 U8 f;;
更新邻居节点的数目,在此进行
( G3 z1 r, ]  w5 Slet i 3
- W% |/ |0 L" C  ~; D4 Q3 l9 Y( `let sum-time 0
6 H1 V1 E# U* b. j( m1 ]$ X( _. pwhile[i < [trade-record-one-len] of myself]
; }4 q1 y$ k- k, H[3 x# b8 E7 ~8 v/ i9 o6 u) a3 }' H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 S0 H' C7 C0 o" `- S
set i" z7 J( w- c8 E: U2 B- Z* F
( i + 1)
3 s5 S. u& U; U2 B
]; C3 y% o) X2 F0 F
let j 3
  c; w3 M. b- llet sum-money 0
8 ^7 \/ \* O5 ~9 |! |3 O) lwhile[j < [trade-record-one-len] of myself]
' l0 N$ Y0 P+ x  n[8 @9 Z- g1 m2 ~# _
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 @1 ^. q: B& k0 t& U* ~" ?# O% jset j
- o7 D0 a9 {* M$ ?1 M- `5 x& [; _( j + 1)

/ \6 J5 \( a1 ~7 F* U]
7 z/ k, a: b7 B3 N$ S: p7 z4 Slet k 3
% t5 j2 P7 F( A$ ^& t& d# j, llet power 0( Q4 d. f7 g$ W( O, V, F3 A
let local 0
/ T2 O$ T7 u5 r0 }# D0 Uwhile [k <[trade-record-one-len] of myself]% n% [) ^4 ^2 v& D$ R
[! D, U$ g6 I* z  I0 K7 k9 l+ {
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) # N: P; e3 N" N9 Y, Y& _
set k (k + 1)1 N! N+ A: u& S0 g- ^, y: t: X7 {* J- D; Q
]
/ A% x4 p. w/ H2 J9 k! o$ qset [local-reputation] of myself (local)
+ P% g# {3 o4 J4 H' i- xend% H, s0 z% ^0 ?4 A7 L

9 g3 n1 {5 n+ Q; c, Vto update-neighbor-total
5 V$ s5 U2 J) [9 E0 u! r" i( G: w& o( Q5 N0 T" Y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 x+ l/ c- E  f; x6 t4 v% i& M+ q  B3 @! ~* \
" ?! b. N" _; u5 A5 g
end1 ^  e2 C& d) c( r. D' g. m
9 i2 r! {4 B. ~  X
to update-credibility-ijl
& f0 j, S; \( k' L, J
# {# b- T) m* y  {+ Y4 L;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。% e% Z* q! A9 Q( a& t
let l 0
/ c- j. L( a, |8 S6 C2 Iwhile[ l < people ]4 T5 z4 E: W4 [0 [- W$ |: g  |
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
/ [, l2 [3 S0 `3 o; ]  A& n2 \[1 g2 u4 D* r: p! {1 o5 j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 s8 a# r/ ?/ `  Z/ G; O" hif (trade-record-one-j-l-len > 3)' V# G# v+ }  |- G+ o
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
# g/ @$ ?, G9 d: g( ~& q6 ulet i 3
! F) G$ V0 `0 Ilet sum-time 04 E1 G% D& x4 P/ E1 Y. H" M  `/ u
while[i < trade-record-one-len]
9 S- @9 N2 _( U5 d2 a2 M% p1 x[, J" @1 ]' l0 p2 ~# s4 k3 w" Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 t0 G% i5 {  p$ y
set i5 S1 k" F1 p9 q5 C$ H
( i + 1)
' p6 W! l6 k6 A/ P2 D3 |
]
5 r) Y3 D+ ^2 @let credibility-i-j-l 0
6 _5 g; y1 Q$ r6 l2 D; @* P" q;;i
评价(jjl的评价)+ @1 }8 m& F: W% E  p& D3 {0 _
let j 3" ~0 b. I; B5 K" k7 X
let k 4
/ L5 s& v( J/ E4 w: D  iwhile[j < trade-record-one-len]+ _( ?) ~9 g0 F: d4 g8 w
[
- X! \2 V  P+ J+ r; hwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉, K% _% N! E7 V  K8 d. R( q4 h
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
6 S) A6 f6 I$ e0 Q+ f8 `set j
0 o9 [3 Q3 ?% k* M  ~0 O( j + 1)

: |( A+ q" x# u  c4 }! V$ ?6 b]% K) F- y6 ]$ l# J
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))8 ?1 V" w6 E# C+ w0 q' G; R( s

0 |+ G& @5 @( |! p9 F) ?1 O" n/ @
2 C' l; J. [9 D* a# N% @
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 b( M; @' {1 B( C
;;
及时更新il的评价质量的评价' \8 o- {( R' y3 E' a6 A3 c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, L6 L2 w& Q9 y2 [set l (l + 1)
  y0 I# U2 i5 T: f2 a]
- `6 o6 z8 K% I" Pend9 f8 U, o* i5 o

! s  M* S* @  {9 `0 L7 u% K  Y) {+ dto update-credibility-list
1 K7 S# q. [& nlet i 09 _+ E6 f2 |  O, K2 u& r0 W# i1 q- \
while[i < people]
1 A) y% Z0 l" f& Q4 @1 j$ I[
. q5 `6 T# T" V  blet j 0" t+ p: @  t# e7 z8 E
let note 0& s; {9 A% v( h/ e+ b$ B4 I
let k 08 \% m" V# K0 v8 s
;;
计作出过评价的邻居节点的数目
/ A0 D3 u1 e0 @, C, g" u4 zwhile[j < people]3 \6 K/ C4 S: c' Q; ]$ }7 \$ ]% S
[
7 o. u2 {+ D/ J* b; \# zif (item j( [credibility] of turtle (i + 1)) != -1)+ P8 Y. b: ]( ]' V% u4 S9 c
;;
判断是否给本turtle的评价质量做出过评价的节点- [) @& w/ z. b- R" N- |$ W% w( a! ?
[set note (note + item j ([credibility]of turtle (i + 1)))0 G2 ^+ d4 x- W- I4 F
;;*(exp (-(people - 2)))/(people - 2))]
7 ]" v5 I/ I8 r( {3 |" O7 U4 N
set k (k + 1)
7 ]! ?& c4 s4 Z3 Q" {]' E) a+ ~1 Q' w* l4 Z3 g' M$ @$ S
set j (j + 1)
7 ~8 z/ A( j  {) {1 _]' d( p. R2 I/ _: e7 s8 u* r: f1 Z4 s
set note (note *(exp (- (1 / k)))/ k)
# X) t1 G& f1 [3 E$ p3 v# Jset credibility-list (replace-item i credibility-list note)4 T) f: L( m& K4 S9 r
set i (i + 1)) n  y* z! s. ]8 {1 b8 H: R
]$ B6 X$ V. q' d1 }5 M1 h7 h
end
6 s' ]& o: _% _$ [7 ~$ v6 R, d
+ J8 R) s, _" ~# g& ?to update-global-reputation-list
. F, k; r: b) w$ j+ M4 e- a  J' \) _let j 0+ C7 j2 Y8 E' D) N/ q1 _' N) c
while[j < people]3 C' U) Y! T1 O1 A2 r6 t& J0 V
[& Z* t; W4 J1 |6 L1 P' N$ u: ^
let new 0! l1 W1 D" m8 w& }! s' ^1 s
;;
暂存新的一个全局声誉5 R  \1 [' f. \7 f/ t
let i 0
+ V8 g# S) H4 ?# Nlet sum-money 0" [' V) _0 q" g  Y, v" ^) u
let credibility-money 08 Z* g: l1 l- a# S4 u7 W- l
while [i < people]
7 \0 ]9 Z) V1 Q& G. g[
7 F2 `" W' F; y% A. y; R2 rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' `' G& Y! u9 Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( A! G' A* |0 b* a' J5 Uset i (i + 1)8 j1 B- J% `) L$ _" `
]$ g. _" {! A/ R5 J
let k 0, a6 k# s- T4 T6 x! C' D. s0 m
let new1 0- b' O) P# R( V" q$ z/ _; W
while [k < people]
2 B. V/ q. v  D[+ @8 S6 q& v* q6 c7 Z2 d* }. f7 q
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
" [* A/ N& J& X8 X. ^5 m, ?set k (k + 1)4 z, P% Z; J, f4 e' ?# _
]3 D, Z8 q. F$ V0 J9 E2 M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  d( V1 P1 ]6 L0 }6 zset global-reputation-list (replace-item j global-reputation-list new)
  X4 `/ n% l: N. jset j (j + 1)3 T- ]  E, q/ W0 n+ Z
]& g+ K6 w' W: n) L( Z" u' {
end" c. e  Q) y2 i
# [- O  q7 b. J1 U5 q) ]% U# G

( f, I- y' {, C9 V. r
7 T9 k9 _5 e: k5 t5 Jto get-color) m# h: P# \$ A
; D3 @, [  v- Z6 d4 ^' R1 n, u
set color blue

. L5 w! d$ E9 C( Q9 Vend
6 @4 ^! A0 d1 y4 U8 [9 M. f; v; ]; u
to poll-class' f* |3 b0 }6 Z+ M# V3 H# s
end& @0 W3 {0 d$ h/ F5 b

+ J( H0 o9 F" d2 u+ H% B6 d/ ?to setup-plot14 j& K2 p. U$ G2 b! L' P! G8 v

" h5 ?* U/ y& T3 q( ]4 f1 mset-current-plot "Trends-of-Local-reputation"

, r/ o+ {( i3 @4 L4 k7 y" t% C4 H
* r) X) T- |8 Z7 Bset-plot-x-range 0 xmax
! x: [7 W& T2 a, r
+ k3 |# L! D$ `
set-plot-y-range 0.0 ymax

' o; s& x, I3 gend7 z( g' X$ c$ ]5 a# s% D* G7 ]
8 E7 }% A) |' f) f# J. m
to setup-plot2
/ ]% F- @) n; q/ d6 i4 H5 u# b. u/ k; l; C
set-current-plot "Trends-of-global-reputation"
. _0 ^; w# ]  m" N9 a* ^4 |; ^

$ R: W' \; H! ]* I2 [set-plot-x-range 0 xmax

' A; G* b: ~& l8 W  R) B+ h( I  p
set-plot-y-range 0.0 ymax
3 v# \; F4 R0 P$ ?5 q
end
% w1 O, r: R9 u  r, ^; y% X( L0 {0 _
to setup-plot37 ^- F8 `0 U# Q8 w
$ x) v( ]* a1 @3 N5 X- |
set-current-plot "Trends-of-credibility"
: U0 ~2 s& A4 v2 |# \+ m6 k, M5 d
* B- B' E0 ?9 g! D* q
set-plot-x-range 0 xmax
, `- B( ]9 H, v9 |: J, ~

% o$ Z" R# K) Q- T# N1 }/ }set-plot-y-range 0.0 ymax

# R( Z( H  f) a7 J; s/ kend/ o9 p9 h/ l5 c8 m5 B! b! B8 C+ y
$ N. j% d- J6 C% _
to do-plots
3 b/ c* P* y& P- w" ]: Vset-current-plot "Trends-of-Local-reputation"9 l+ N/ |% s: d- }0 r" f& Z
set-current-plot-pen "Honest service"5 ^# `0 W9 L' J! c6 k3 T/ {
end
" Y2 ]; {% w4 W- q, ^; P1 a8 a; G/ i; K( i- d
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.- _6 P$ H( S! k: \5 h: Y

! j; i; R7 M, h3 c3 w# A这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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