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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:. }5 {2 `. v0 u; ^. f: b. t
to do-business
4 h8 P. B. G8 }0 z5 l$ e rt random 360
6 A0 ~/ j4 B0 s; e) e# q fd 1% K- Y  C( g3 r% ]3 u2 ?  t) u2 N) h! L
ifelse(other turtles-here != nobody)[, F! G; E$ j$ [% N4 b
   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.
& n: g) X4 E0 M4 [7 y/ K1 P7 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: M' G( S( S6 f) E" m   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" ]0 z! O) j: R9 P) p   set [trade-record-one-len] of self length [trade-record-one] of self- k; u) @4 W9 I2 q& L, |
   set trade-record-current( list (timer) (random money-upper-limit)). P( u8 E1 H" ~4 n" J7 e8 b
9 @2 D0 H8 x+ Z- Z3 a
问题的提示如下:
7 c9 D+ Y5 O" ?0 \' {, R* X. s; D# M9 E" X7 a$ V- h
error while turtle 50 running OF in procedure DO-BUSINESS" u2 d8 f: M# l) z
  called by procedure GO
# Q! f0 @8 Z# S" y- S4 MOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 b' X; |& h5 U: A, f0 r. X' r
(halted running of go)
/ S  e$ I" d/ v4 ]' Q
% ^$ o% s- F7 Z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~~, m# j. r+ ^' j. l& u; X/ A
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4 m/ z# \! U: C, b
globals[7 G5 f4 v; ]  T, K
xmax% c" {0 L( _0 a) v. ~2 F
ymax
4 ?8 x. R# a6 g% f, \3 e0 A5 E( Oglobal-reputation-list. e* f9 }4 k2 w+ U1 u% o+ B
' P8 w* }: D+ D+ @! u" W/ i3 T
;;
每一个turtle的全局声誉都存在此LIST
5 T0 P( T- [, N, k9 Q3 mcredibility-list
6 _: y) z# ^- |8 c* _% T; V) I;;
每一个turtle的评价可信度/ i! Z- i3 p( x0 x% A" x1 g
honest-service
! V9 B! D: m4 n! o6 a) t* iunhonest-service8 g6 m6 g! X* z5 U
oscillation
/ Z' F, m& ^1 H5 erand-dynamic
, Y1 c! w( q0 a- l; R]
9 a: R* z1 R% q- M4 y  }" n' o* _; D3 P. e1 o6 C3 s- F4 R
turtles-own[+ t( q* o+ U' M7 d9 \) j
trade-record-all
3 M" ?  {( c0 e& E;;a list of lists,
trade-record-one组成
2 y' g2 z2 A& Qtrade-record-one. S. q: k& U/ \1 S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 X8 u" l: C1 c+ u: s4 `+ x. Q. b1 Z$ {) M8 n8 j! S  X2 Z& D
;;[
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]]
1 Z4 }" D9 h( l3 @4 ptrade-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]
5 `( w% P5 B6 c9 q' scredibility-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list0 f4 m; n/ _& o/ Y/ ~
neighbor-total
+ z1 i4 B/ \" \! _;;
记录该turtle的邻居节点的数目
( V/ W: Y0 M- B, U8 R( a3 I0 _/ k9 {trade-time
7 T: x2 w: X6 E3 L& X* v, Z4 ?;;
当前发生交易的turtle的交易时间
7 L0 B; ?1 j" _9 v; ^' |8 vappraise-give+ w* {7 r3 V, O- O
;;
当前发生交易时给出的评价" \/ ], N) C, k( F9 g1 v+ w& N* b
appraise-receive
% J# `# K2 m- g5 X2 `6 A. X;;
当前发生交易时收到的评价
6 U, D! {' ~1 C4 @/ Z% \+ Q; [appraise-time
8 Z, q6 a# Z! D. X- f. P/ w;;
当前发生交易时的评价时间
: J( o1 p% Z% m" zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 K6 d4 B* x$ P, m) H' Z
trade-times-total) k/ o7 _* t) a1 \0 x7 g
;;
与当前turtle的交易总次数" O7 B0 J& j0 ]; c8 r( i* w
trade-money-total
5 h" w6 A# X/ k$ o7 R# x;;
与当前turtle的交易总金额0 H" I7 c, T1 j0 E
local-reputation
1 \' o3 [6 r+ I) Y" Y5 Q# mglobal-reputation* u- g! u5 E5 i$ P$ d+ _
credibility
+ ]/ U% Y9 P9 {. K0 \+ A;;
评价可信度,每次交易后都需要更新- M8 M. g, @  {6 c1 J
credibility-all! k( W* g& D: s* \, @6 m+ `  B
;;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
8 Z- F& c8 ?$ D) l0 V5 D/ G8 A* H4 L$ S
;;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. |  O' M4 Y) T/ \- l
credibility-one
( w4 \( H: _: g4 I5 t& p" C;;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people) r* T8 |5 T; l* R6 B% k9 Q
global-proportion
! b+ h- g' ^% U/ h8 f: ?customer
5 y  H0 F8 Z: T% ^1 Kcustomer-no
& `6 k4 H; G$ N/ N& k3 Wtrust-ok" {6 e9 a  b5 g2 K/ Y
trade-record-one-len;;trade-record-one的长度2 Z' C4 v# X  R4 T" r; ?; r
]
7 c: a. T' w- @) ]9 L: K+ O) n+ l' i
;;setup procedure& j3 @+ s- B  t
( H9 C9 w- B6 {' \
to setup
+ y2 _+ [3 I- @& C& l+ T+ m
- q9 |( k+ c3 H% qca

/ r# I) U% d; l: N: t7 A$ [2 g% v: K/ x  I) c9 J
initialize-settings
: O5 ~: E; F& d' q( Q7 O

1 p" C  x' j( tcrt people [setup-turtles]

  J+ W  i, {- A& I- u/ S9 A# K! v: X. }/ }4 X. m
reset-timer

3 G) C5 S! h! n1 i6 ^
8 I  D8 b4 s1 K" K8 O+ `6 [2 lpoll-class
6 G) Y  L* @1 m

. e/ t, y- R8 Bsetup-plots

* Z5 H- `# X6 @3 R( K$ F) [5 p
- B/ K/ k: A, o/ d# c  qdo-plots

7 }' {% Z' e6 `3 @) r. xend( z% N- ^* H) [3 t. q* z
, N0 `" h* u5 e& d2 c7 R* \
to initialize-settings
2 a# |* m3 `( H7 Q4 F
0 Z! W1 l% e! M3 xset global-reputation-list []

7 p' V$ W' ?% D. z- p
, v! f  `9 }+ y  h0 Oset credibility-list n-values people [0.5]

9 v$ N  X" N6 n9 e7 q  W& J
7 ?) P6 W- m" p8 zset honest-service 0

0 N( o0 ~3 N7 {$ s$ b, C' q' t! ~& D$ T* t/ C/ [0 U3 j
set unhonest-service 0

6 j9 G- r5 I, g/ `: b/ G9 r2 x" k3 \4 Z- ~( Y5 {- Q) t
set oscillation 0
* W1 Y# R2 h" F7 U

% q0 G) W( ^% s1 Oset rand-dynamic 0

- ~& g5 o8 _* Z5 o3 nend' y( D  F7 B# j7 D+ G6 c; g
3 n' w) ^" \  a- u0 e6 H
to setup-turtles
2 s$ a, P" {# C% n: s/ Hset shape "person"0 q% g! }0 l  _7 M
setxy random-xcor random-ycor5 ^! G: ]0 B8 V# y
set trade-record-one []
2 k1 X! G+ _0 n0 [8 R! x6 I- R
: R6 N' [0 }7 R7 m0 }/ a
set trade-record-all n-values people [(list (? + 1) 0 0)]
# x) T  @  v* f# X) d- ?* ~- `# D

% u( t& b; v2 ^  nset trade-record-current []% |7 J) O  J# I9 H
set credibility-receive []1 v& K: c2 d* J. ^$ o0 Q
set local-reputation 0.58 a' [' c$ ~* y3 m$ O: p
set neighbor-total 06 j, k9 H- E$ s: O  T, p1 I1 q* b
set trade-times-total 05 E; R/ E$ N3 A: t. Z! C! ?
set trade-money-total 0
7 d* d2 s9 C9 Y% M8 M$ `! u5 Zset customer nobody
/ ^* _: w1 ^  l$ j+ C3 kset credibility-all n-values people [creat-credibility]" g% a4 u" U9 Q% [
set credibility n-values people [-1]
5 Y, w) \' ^9 C/ yget-color- N  N" \3 d$ R$ |
1 G3 l5 F6 _2 `* A7 L: f
end
  L' N# u4 `- e4 M& q0 S- m: s& m% g8 V
to-report creat-credibility4 t7 M3 I6 t5 ~, Y1 Q
report n-values people [0.5]7 C- V* z0 `0 g1 i! z
end$ g$ A% l3 W, ^- J

% l$ w6 {6 V5 k" Kto setup-plots
& `# h5 g8 E% V) i: A$ F/ m5 Y- a% O' K
set xmax 30
# F5 D% c. v9 W/ W8 X1 K

2 R' {: U5 A  f, c. J5 iset ymax 1.0

7 ?6 j5 z. G% q$ m  v& v1 P. _9 Y
& X" f+ Z! z3 n' k- C& x2 W3 E8 f' Tclear-all-plots
) \* |; C8 x" i* ^: {% }: i4 x$ ?2 r8 x

, [+ v: ]; F( I1 Y3 r+ U! Isetup-plot1

& U( s! K0 J, t% V& X1 _  E/ W
3 A5 q$ B5 o' bsetup-plot2

  R1 q; J4 ?3 N
/ l$ m$ t4 R: W( Ssetup-plot3

$ _1 P: `* r" o2 Xend
/ C( J) f5 t: y( w7 {0 z
, d, `7 O8 @! ]' ^: H- {7 K! n/ Z/ d3 p;;run time procedures
$ y6 U/ g- e# Z) F
6 x0 m# @. y$ f  `+ E' A  Pto go
- A& a, v. l, e& p$ \, _3 {6 {/ _  j# @2 E
ask turtles [do-business]
: M( s/ t" n" `3 l
end
3 ?) U( e2 L. _- l5 r: T  G) e0 r1 c( D: t, C. {
to do-business
/ A  t7 q- Y/ H  l# e
8 p/ p6 r( C- Y* K+ I
6 Z/ |5 a$ k( \- q* T) Q3 x% A  q9 p
rt random 360

, o4 |% a2 A* R1 m3 |
: n0 w' B7 ^2 r5 Yfd 1

% ^6 N, H  r, h5 \$ h
; S, ?1 ^6 E1 @2 _- G  U+ b1 t- j' D$ Jifelse(other turtles-here != nobody)[
6 ~- m7 ^, d7 d9 y& F2 W; `7 G3 n" _7 N
, z) ]+ X$ V8 e4 k
set customer one-of other turtles-here
: d* i5 V% b# @$ ]7 u

2 f% L" c$ \2 S$ k, [;; set [customer] of customer myself
  o1 w. X- x& ~

2 Q: G+ R( U/ o! N1 }set [trade-record-one] of self item (([who] of customer) - 1)
8 P; @  q3 k9 |9 b[trade-record-all]of self( Z! L9 |) [4 p! r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 _# |6 K$ K& C  E/ E# L& X/ @4 _7 s5 z$ F% T$ _6 |1 x7 @* d* V
set [trade-record-one] of customer item (([who] of self) - 1)
0 b" \8 o4 X% Y( s. F7 D[trade-record-all]of customer

. a0 a. i3 N6 }, k4 S( u* T; h) ^
set [trade-record-one-len] of self length [trade-record-one] of self
( E( D5 c0 Y7 @! u

# e& t; L6 A5 f/ y, S6 Kset trade-record-current( list (timer) (random money-upper-limit))

( t3 w, W; N9 A+ G- S2 l' C1 @; G3 q3 d  k9 W  i
ask self [do-trust]; h% d) i3 |9 g0 }; |: o
;;
先求ij的信任度, x! _' n& Y. W

8 G$ m. w6 G& z: y5 tif ([trust-ok] of self)
$ M8 M# C7 `' j3 V;;
根据ij的信任度来决定是否与j进行交易[
8 z4 J0 b# A. Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 U2 R5 C( Y8 j. n+ m

3 ]8 h( T% ]' |+ H& n7 s[

8 D/ B1 Y8 S, p4 r* y$ `, @  W, w  B( E0 f% a/ B
do-trade
5 B- V4 ]% K1 d% L  X

: I: r0 g5 h+ X/ h7 ]- qupdate-credibility-ijl
# k1 J! ~  i, `& O7 n' R

. A( Q% ~% X0 x! N: xupdate-credibility-list
+ H; i+ _; O4 e
4 u0 r3 n* f  c! Q! s

8 m! y1 y0 \8 `4 @& bupdate-global-reputation-list
: [' i7 i6 K; G5 X

  H, u) f4 X! M$ Gpoll-class
6 n$ D& o* Y& D2 l# C/ W" z
0 U8 E- X6 d7 H+ t$ ^: V
get-color
7 |5 Z2 c# C- M; }" K9 s% R
; h0 m8 S( Z) w2 m! a
]]& E8 U4 s2 D, s, u- q2 n; z
6 o, L& N) x! f+ I, |
;;
如果所得的信任度满足条件,则进行交易
: [7 J4 I5 u' P: H( M' {
- m3 I8 B( q! Z+ b; a[

1 ]6 k* i( s4 q2 D+ \& T. ~4 B- X
rt random 360

1 u8 C' z2 s2 @- [8 r& [6 w+ ^6 U! @2 R' v6 t; x5 [  J: P
fd 1
5 r! ]& h' F% f( }6 N6 O5 D# `1 \
8 I0 J. L9 x+ F8 t* r1 V1 T9 n5 i3 M
]
7 m2 L6 x$ |; {; ?& y. z
5 r, c4 |1 Q! N8 o6 ?3 h& \8 S
end
7 Q* d. h, q( l
/ d6 I: {% B9 @
to do-trust
% q6 F1 `5 A9 u2 mset trust-ok False
# R: \6 T: Q5 X5 s# m  k2 W  k! d) V+ f* R
9 X5 O) C1 y" W. ]0 z5 Z( q6 \
let max-trade-times 0& P9 U( s, i/ c& y. G, _- [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 p% C- r. H9 L4 W) elet max-trade-money 04 M% ~1 F3 X4 i; w9 U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: [# ?3 U5 `+ F  f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! t1 i. O7 p& z8 }; Y( D

* @( Q# V: _/ [/ p1 G2 G& s3 E

% j- V0 _6 \4 N5 Q! G' n+ H& Dget-global-proportion& X! R9 S+ s& E; a8 j
let trust-value% G! j8 E- {! N: j
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)
2 x) y( H  I0 w: `1 `
if(trust-value > trade-trust-value)0 h2 N* ?8 _8 s8 m) t3 ~
[set trust-ok true]  Y0 G, j3 b* f$ s
end  C4 w/ A5 ^: B8 {1 U0 _+ R

6 w' {' v$ X6 O, w5 hto get-global-proportion
3 d' T. x5 G( u& d" W* h3 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ |5 I+ B7 {3 u8 L' V[set global-proportion 0], H' F. x; `0 R. q* [- b
[let i 0; G8 }% k$ Z0 J' u" V
let sum-money 00 V# O7 \, a: W. N7 u
while[ i < people]
/ ?1 f5 K, v3 I$ \4 l; T# x5 \, i[
" Y- D9 Z8 d, U/ ]& J$ }" ?& s! Xif( length (item i
$ H4 h+ K* n* Y2 _1 ~) b[trade-record-all] of customer) > 3 )
5 W/ ]) C7 O; o1 m# f, o" P$ e
[
; D/ g3 C- W8 G4 A3 n, |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! p" h: K4 I' U* t
]
" L6 y1 e/ U& @8 z]
' L* m& f$ m/ }4 _, V8 _5 U( Ylet j 0
8 ]; I! n/ Q& i& Zlet note 06 b3 c* Q4 j8 R9 Q0 n( f$ B! T; ~
while[ j < people]' Y8 h2 u% `# k. r( }8 {) C' |
[
; A1 _( D7 E+ K; O' U, Y/ Lif( length (item i
0 a$ |7 f5 l, d5 g( Z$ g; k[trade-record-all] of customer) > 3 )
" O. Q  C" O5 {+ m% _
[
# @: L: m3 R& _4 ?# mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( \+ A; ]  {  T$ O3 z1 [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. Y5 X2 v! A5 [- e% w) `$ O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 H% B& h' {8 Z' y+ b9 j
]" p7 R$ p' h* s3 k
]6 |5 g( }" z% e9 l( ~' M
set global-proportion note
" u6 T7 d( A/ t6 G) `; w, B]
5 o" T7 h4 x6 ~8 m! Uend
& [- @( s4 w+ K: c9 Q' {3 Y) W# `  S* P
7 e+ m, A! ?% n$ t. _5 h: _& Sto do-trade9 \3 e  R3 q- H2 K' ^
;;
这个过程实际上是给双方作出评价的过程
1 O4 B: E3 G9 e# Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 Y6 D( @# R1 I# Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ o; P, g/ m! @! W5 Vset trade-record-current lput(timer) trade-record-current/ Q- C1 j4 K7 [* p8 X" P
;;
评价时间2 o4 C7 `, V  o- ~. c4 G% b. R6 n
ask myself [) e8 J% V- _# m; W
update-local-reputation) V2 _4 B  x4 L" M" K
set trade-record-current lput([local-reputation] of myself) trade-record-current
% d: }$ A6 {* h]5 n% b/ H6 n% k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ A# m9 P7 o! i% W;;
将此次交易的记录加入到trade-record-one
+ \6 e5 O& l# yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): \  l7 L% j; ^7 ]
let note (item 2 trade-record-current )
) d$ g9 v! F1 Tset trade-record-current. ?' D6 F, f6 J- o
(replace-item 2 trade-record-current (item 3 trade-record-current))

: z3 F+ a7 p# x- R) S9 q' xset trade-record-current  u. U0 t/ z9 l- @2 f
(replace-item 3 trade-record-current note)5 r+ O; W) e6 E
7 i: p" v" D) E1 E

0 i2 c; Y  Y; Z5 ^( iask customer [
! T: y: U! M: Aupdate-local-reputation+ j- ~. f! x, @/ h7 f  [
set trade-record-current
" @% |  B9 s+ b& `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  {- n& [( N$ ^7 j0 r
]
& u; M% ^7 E) W# ?* l: j) @% Q$ b6 ?! t

1 ^$ U. b+ N2 ~0 y' ?% Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" S- v% u, V; B5 B9 x3 j) O
- h7 V, E0 [; Z9 U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 X: `) ^9 I: d6 |7 v
;;
将此次交易的记录加入到customertrade-record-all
. m) c8 N2 e1 \3 I' i! lend* w% E& Y! |3 L9 N" N

0 g+ j2 j5 k  ^: yto update-local-reputation8 p. l1 D) c. K1 e: m8 ~% n
set [trade-record-one-len] of myself length [trade-record-one] of myself0 W/ \2 h. T  B) Z
( V+ Q: o4 {. d1 d! f$ X4 F: |
# R- z  ~8 i9 Q2 f; {: W! ~
;;if [trade-record-one-len] of myself > 3

* f4 N7 z4 S5 S" Jupdate-neighbor-total2 O( d! j: J5 A- C. z/ ?( w
;;
更新邻居节点的数目,在此进行
! }- M% l6 g0 H/ Clet i 3+ K) V) F: h3 T! Q7 X2 a% m% t$ }
let sum-time 0
/ \8 U8 W  B1 L" w, Owhile[i < [trade-record-one-len] of myself]
5 H. K" a& N( H% N; N[
9 k; x9 k! D0 F% eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 k3 i6 D$ F3 B0 ]9 O
set i
( \) M# D0 \+ G* G' m( i + 1)
# r. G, ~% ^) Y# b  {) R
]! g9 c/ L! X' }  u1 E3 Y- _
let j 3
7 U) ^  W7 r: Alet sum-money 0
& w( P# P( O6 |3 Awhile[j < [trade-record-one-len] of myself]5 H2 o5 w1 r" W  D
[0 N# E( E& U2 T) |4 B: H
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)
, ~4 M# @* C0 w8 D# j6 ~! e4 Sset j! S$ Y: i& o, Q, Q, C
( j + 1)
0 A& `* V- a+ V" H! b: n" n/ \: ^$ P- q
]
  b' H- ?/ X' _) i' q! ^- vlet k 3
* {6 i/ d7 J6 \% Mlet power 0! T# c! j- `* H( b6 }! K: l' k% Z
let local 0# F0 }# K; f" ~  P) z0 {- q% H
while [k <[trade-record-one-len] of myself]
  \! _) z% f8 C0 J[
: [& A  L9 F! i' q( Y0 U6 k& P) Oset 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)
5 d% P3 h+ F! L% ?set k (k + 1)% G( P1 t  U3 z  I  M5 {
]/ d5 ]4 V# d/ J0 H  w! k3 ^! j& K
set [local-reputation] of myself (local)
; Y& a; w. n6 k' M* Tend
- r; D1 _  N$ [% g- H5 e0 U3 a2 |( v6 \3 A2 ?* X  L7 m( r3 S
to update-neighbor-total( f) }; `5 j( ]- y2 e- X9 }

0 ]: J- `+ }4 F6 F( Sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 A0 W. y" y. p+ r: ^/ j7 l2 r% D! J2 Y$ G( F! {+ b" Q
+ s- W7 a9 ]- a, O. _% `4 L
end, J& ~, r, c+ P7 z

' Q) z: G* H6 ~( f5 D: qto update-credibility-ijl
  Q+ Z) e# z- P, r4 V/ h6 C) g
- {% H3 f! ^+ S4 u- J. @9 j0 _;;
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。2 }, O9 N: O3 ]2 d6 |1 t
let l 0
7 X4 {1 N* b+ G# x2 O% _9 ?5 q* Ewhile[ l < people ]
3 K+ T! i5 {, x3 r- p* e;;
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
% I. [& X$ @3 c1 `& J9 J! w& {0 z[
$ n4 u: y4 q. \) g" @2 Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# O9 \2 D9 C* A7 \: _2 K' x
if (trade-record-one-j-l-len > 3)( O4 q; h0 i: 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) V  @: [& h$ H2 P
let i 3
" m: z6 c  ]. u* x( glet sum-time 0
7 `6 c7 F; @+ R5 uwhile[i < trade-record-one-len]' k7 H. b. V, ?& V, p
[3 o3 w; N0 v9 T' o' V6 h3 L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 I& f7 h. P  @  q- l" c3 Sset i
4 c" b3 t  V1 Y& V( i + 1)

: Y$ N+ }. Z. u]& {0 g; s$ L3 |9 a! |/ u
let credibility-i-j-l 0
9 `6 c, I5 ?; Z9 J. {$ N5 Z;;i
评价(jjl的评价)" X, y1 @5 t& v, [& N" Z( r* ?
let j 3+ y! M6 J" [: y: t% O
let k 4
+ N6 z# A! B- r# p/ T+ pwhile[j < trade-record-one-len]
/ k' G5 x, O/ \5 S; n6 \[+ J  }% }* N" E: ^
while [((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
  ^6 F9 h) M8 ]3 \- zset 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)! z  M3 s6 l$ D( D
set j3 a5 z% N) @- V7 A6 \1 a. T
( j + 1)

, L1 H, T: O) K$ ~( ]  a% }]+ d, ~3 q$ [  L. L! u! ?5 R
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 ))3 Z) L$ q% s5 x
" c) U6 |7 B7 g7 b3 g/ E
3 @5 m- N+ ?; P4 T0 |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% i) e4 f3 Y1 k+ g" c0 v
;;
及时更新il的评价质量的评价3 U0 g& u- @$ `# T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  n( A8 m: B8 t8 V1 ~4 yset l (l + 1)
, ~. Q" V) \: K- U4 }  V' j]+ {# ]+ _" A  i7 I# m) N0 N. S: n( f' F
end: D0 I9 B) q: m1 ^. y9 k' d6 _
) [2 A# y5 I2 E" I: o1 `1 {
to update-credibility-list
9 R% U6 m4 g2 k4 |let i 0
6 e1 M: r0 n; _0 c, Pwhile[i < people]! T/ J& n, G& D- B* b* Y
[5 }" ~, `- X5 J8 C
let j 0
) q& r! _. O: g, F" u7 \7 P* nlet note 04 Q" A: Q/ y  b8 _% W
let k 0
2 e! S9 A$ Z8 I4 h  w* i! W;;
计作出过评价的邻居节点的数目
8 V5 p( b" L( T! {. A) Cwhile[j < people]
7 f2 Q2 ]# K, R& w/ n+ k0 p[1 q8 Z$ D: ?  D
if (item j( [credibility] of turtle (i + 1)) != -1)7 y5 Y; S( v, v) ?
;;
判断是否给本turtle的评价质量做出过评价的节点1 q* Y% o' K6 z) l; ?& i: O
[set note (note + item j ([credibility]of turtle (i + 1)))
/ ]) A3 m( w: L1 z: x;;*(exp (-(people - 2)))/(people - 2))]
) E) P4 E5 m& Z) E) D  P
set k (k + 1)# R  X+ r# A7 g- `  ?2 I+ n( Y" M
]* l* g. H0 F5 \) b/ Q( U* ~
set j (j + 1)
5 W- o/ D$ R! y( T. Z8 Z]
8 D; T  R  E8 s& i8 v# tset note (note *(exp (- (1 / k)))/ k)
+ Q) p8 h( |8 B* |* v$ k  Uset credibility-list (replace-item i credibility-list note)* S, ^9 g# O1 j2 ~
set i (i + 1)* g/ M% h* N8 [- `
]
  M+ g, w% C& B8 mend
- l9 S+ P4 H/ R% Y. n. m! k
' y$ `0 `0 m# t  A( ato update-global-reputation-list0 J7 k$ F3 ?8 l3 n3 o5 H* v; y4 V
let j 0
8 [* _# p6 n, `' iwhile[j < people]3 i6 Z3 E7 K4 P# b$ m) X' A
[
  U* {1 z) n. n/ f" G" m' Klet new 0
( W& i6 S! b4 I; Y7 x' f+ [$ E. P;;
暂存新的一个全局声誉
) C1 P: W0 |, w* J0 ^: mlet i 0$ U4 y& [) B# n, _
let sum-money 0* u5 c, Z* q( C. j& ]/ B
let credibility-money 0
- a0 x; O4 y0 Z+ Z" B2 N+ gwhile [i < people]" x! M: i- h, X- X* z
[# Y' {) S9 t6 x' [( y/ d6 W" e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( c. ^1 J% z# D, D5 C, T8 l$ G7 P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 {6 e" H* K5 u& e  c( z; G4 K  `
set i (i + 1)
+ P" K9 ], V: Y" j! ], X]
, V/ H, {! k2 I0 [let k 0, r+ A- t$ H: J) D0 u# i' Y: \
let new1 0, A& T' w. f" T5 T5 Y2 \/ \
while [k < people]1 h/ ?# {% r" F; o, |. D! r# F
[" l" H' F3 t# y! N
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)
. L' s9 {, D- s4 O5 f* b! f% }set k (k + 1)
0 Z" ^7 P8 x* b]
; {% `& h5 e0 D1 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! |$ F8 h9 a! ^, oset global-reputation-list (replace-item j global-reputation-list new)
1 F1 p) p# [7 I) [8 `" e: Pset j (j + 1)
+ _7 I* O9 o/ F. U! n& `]
4 q4 i- |, x% |- f9 U5 g- ?end
/ f( R% _9 N; F  o; D
' ]  i, l( H" W  p. ?& P5 B6 M- Q# r- [8 T3 S- C: t- f8 b4 ^+ S. x
- O% p* u4 C3 r4 e  l! {
to get-color; T0 r; n2 t3 o2 x8 c

2 h$ {4 n0 R; _# a5 R2 z: eset color blue
, }: q; q9 A, B- U0 s" ]
end
; s# y/ ]" b& D" Z
& }7 X- q' A# fto poll-class
6 g+ [! v+ v# l3 _1 W+ x0 z! R3 dend3 Y. h+ B: G1 ?$ m  `6 P1 ?( H8 E
( _' p2 o. x7 `" Q
to setup-plot1
  }6 d  s0 ?, g' c' n& O
5 M' P3 O$ A! c4 }* M6 p/ y/ A2 S2 cset-current-plot "Trends-of-Local-reputation"
' M% n$ M: P; O; _# S: [- w# i
4 H0 G4 j1 q8 c3 V. @: t/ S! P
set-plot-x-range 0 xmax

+ }4 t! P& ^: @4 k5 ?/ m, Y: K% D5 [6 b( c) Y& [
set-plot-y-range 0.0 ymax

3 S* M# [( j  ]+ y) `. o8 Bend) {' h+ X  t, u  [5 O5 \

% T" I: l8 f3 J1 ^# Uto setup-plot2
) S6 \% }( E) X$ O& n4 Y: l
4 Y3 l0 n) x  u) ?, bset-current-plot "Trends-of-global-reputation"
7 [: P7 n* g* z5 I

0 X7 g7 Y7 C5 J- e, j) iset-plot-x-range 0 xmax
3 e( V6 N7 @" b9 M* {( x$ o
* y0 J) k" _3 A8 e: ~  I
set-plot-y-range 0.0 ymax

& ~% _# e4 c) I, q9 kend4 g2 g+ d# P4 M4 d+ K8 j* F+ [
+ d1 ]+ `7 Y( n  |. c$ q& \
to setup-plot3$ }4 ]2 ~: b: p/ Y* m* W* ~

% I. E( s9 r$ k9 D3 o/ {set-current-plot "Trends-of-credibility"

* i& \9 x3 l1 z+ ]& @8 N  [2 q  W: ^" H7 p% h
set-plot-x-range 0 xmax
, m/ D9 e6 b0 H; t: L, s
; r& R3 ?5 g8 b) |! ~
set-plot-y-range 0.0 ymax
- j+ B: o) n* p' u# {
end
. H. G. }# J8 y( p2 u$ S- \6 O+ @
# Y( M" c( R4 m3 K  y! }to do-plots
  }/ ^5 m2 d. Cset-current-plot "Trends-of-Local-reputation"/ D; p% n; J! l1 i; |$ B  X" _1 [; j
set-current-plot-pen "Honest service"
+ e$ G  [: y3 H/ u' H9 Gend" p& P+ P$ P8 F! v  y

# j% e# a* ^& h, i3 s2 W[ 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.) M$ Q& |/ C9 }7 F+ ~
! f+ ]: N, I' O/ M# {7 w
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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