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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:' S4 Y9 `4 A! E1 ~+ {
to do-business ; }# n; O; l) \; s
rt random 360
: H/ ]% a& l5 ], @ fd 1; X; c4 I- `2 e& _- r( F" Y1 K# n
ifelse(other turtles-here != nobody)[
6 S3 E% u) ]) g* W  o   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.
- k: [$ h3 \4 a' y6 k3 C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) j0 Q% O3 ^! c* U$ y# Y- }( I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* T' t- W: y! o) `0 m! |
   set [trade-record-one-len] of self length [trade-record-one] of self
) p; a+ _  W" z" _- c& ?6 n% ~# f   set trade-record-current( list (timer) (random money-upper-limit))* S$ o6 Q7 |, E. ~  k

3 a4 Z' R( r4 Z/ c  g1 @问题的提示如下:+ K# G' d$ n4 X$ V% [5 @( T) n

6 Z% t' P6 d" b- ^8 ^( I' z7 Derror while turtle 50 running OF in procedure DO-BUSINESS
! N" m! S: {: R4 D6 B  called by procedure GO( v3 i0 W) ~6 W; [, B& V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 b( n- j/ N$ t5 b
(halted running of go). j  t$ e, f9 [- g, O
( H6 c7 v& z1 _& d3 B8 t  J3 f
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~~. t* p. W/ B' H7 j# ?8 i6 C% |9 [
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& U, |7 C4 }8 }3 x# \! o
globals[2 x+ C2 W& S( K1 m6 \2 w: F
xmax+ m6 M0 {: k# [5 @* Z: t. H
ymax7 B: D6 b4 F8 Q5 w; m
global-reputation-list
9 {, ?, \$ f  Z3 W  c$ d& q3 o/ {2 t$ t6 [  P  d, s
;;
每一个turtle的全局声誉都存在此LIST
$ Q1 X7 g% A' D# D/ Q9 X! l" xcredibility-list2 d& |1 H# H/ w1 O* Q
;;
每一个turtle的评价可信度
; }3 G5 L' w+ I/ X/ z# Ehonest-service0 p( k4 ?1 C* W3 s+ \% B7 @
unhonest-service$ _( O5 i+ w2 W  l+ ^  M9 G( e8 Q
oscillation+ V5 Y1 h1 k+ J. ~8 o2 _
rand-dynamic
/ u+ f2 N6 X; @$ V9 s( C6 \]
8 I" m6 O4 O6 g' a# L( o. f% d0 r/ t+ y+ B5 j7 {! _
turtles-own[2 w5 V; g9 T- K5 z4 A( M. ~
trade-record-all1 Z& T) V8 j7 d. O. T. b- x# m
;;a list of lists,
trade-record-one组成
, [, `" s* w* N, @& o* Wtrade-record-one
( R! ]4 {/ I! N; T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ {! v: E5 ~# j" u

! f3 F; C, b$ f5 j4 W' ?0 {6 M;;[
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]]
# e. t! y0 J/ {% e  f5 ctrade-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]* `6 C' r$ ?" |. A
credibility-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list5 X& _0 a. H4 P6 l6 D! @& z
neighbor-total
0 ]2 O" N$ N7 W7 K; i;;
记录该turtle的邻居节点的数目
6 j( H7 N" M% C8 Mtrade-time
, `8 j: @/ d! z9 x( [;;
当前发生交易的turtle的交易时间$ n  ~& O8 L5 Y5 D% M: v+ D
appraise-give4 S4 K8 S2 q2 M9 }" [* N
;;
当前发生交易时给出的评价
; Z( w0 y. F; k! E0 I  n, gappraise-receive: c1 h  K# v; J& K3 h
;;
当前发生交易时收到的评价
/ l- R0 R1 |/ D* ^: vappraise-time  E3 t3 b5 z3 v$ A7 a7 h
;;
当前发生交易时的评价时间
& H: X  _' \" ]1 T6 Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 k2 _% w, C: U2 k, x: {3 dtrade-times-total
# b; ~! q7 g  r3 y8 s7 l1 @% r1 o9 d' p;;
与当前turtle的交易总次数. F; N9 G5 {5 u! x6 c( K" w
trade-money-total" Y9 ?8 W' `- h9 h. |% R# E
;;
与当前turtle的交易总金额( ]3 L. M/ ~+ }* ]) n+ i
local-reputation$ J: K5 q$ f( i2 s' k9 d/ t
global-reputation
1 ?3 d/ i- U6 i0 Ccredibility' N& M$ w, w0 Z. Y7 j1 I# ^
;;
评价可信度,每次交易后都需要更新9 r3 `* [5 N" G4 x3 c! @' m' Q# {
credibility-all
0 `/ Z+ u7 g5 N7 U) R0 m;;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) C( k( T7 d( ?6 U7 x: H  z

: b3 n# z+ b/ f. D2 O# O; `6 t;;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) a6 m4 v" ^& _1 x. L0 n+ C  a
credibility-one
6 a& I: D3 H4 J7 l, d  k  ^;;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
9 T5 F% Q" X8 Dglobal-proportion4 N3 U# E5 x5 w/ i0 W
customer; g2 f8 T  U1 G: H8 U1 T( B0 d6 C
customer-no( ?+ O0 b; L& \' T" }
trust-ok( R- P7 L; D2 n
trade-record-one-len;;trade-record-one的长度. P8 ~: r4 i8 R2 u- s
]. y" A* `$ u' @0 e, \% j

* q$ ]; k# C$ ^. M;;setup procedure/ X( G# l0 a0 ?* r" D/ X

2 O3 W- @$ G8 @9 xto setup
9 t) ^. P! d( [! f1 b
0 x8 d1 T! A0 o6 z* |ca

  R9 u9 o7 m+ I; ]1 C/ \: r
: ^3 E0 J2 G+ e6 R) y7 Y; S2 q2 ^initialize-settings
8 X/ Y( W& o. q7 L; }0 k
' a* L5 V: E( S
crt people [setup-turtles]

0 G" L0 Q8 h* w; X3 F/ n: ?& ?: w6 M$ l% a' x* O" E
reset-timer

# B7 C. x$ T: O2 h/ F9 v8 ~3 m9 V  r- X! L4 e2 i1 [; R4 G9 }
poll-class

# }8 {, G' h1 r3 @! l* v
8 U5 I: R: T* r. r3 Vsetup-plots
% G  d% C! k! p% {/ l
; J* D# T# ~, s
do-plots

2 v5 u( k# W2 Oend
+ T7 k6 W  f3 p- E. L' A+ b* u5 E) `5 D% h0 E2 h/ e, O- d
to initialize-settings& l, Q% h  U2 ^5 _

7 g; _! U) b: u6 B7 R* t; o6 h4 iset global-reputation-list []
1 u+ z: _+ A$ |) z6 O0 A. A& a8 Q" |

: l9 U4 ?+ p: n/ F# c! rset credibility-list n-values people [0.5]
+ {1 j$ d9 V: R4 c# ^" P. ?

/ ^! H% A- m4 j4 ~9 {1 l% Z6 Lset honest-service 0

+ R+ f. p; k, O. [+ g) Y. `
& l. ?+ p$ r8 x$ G) S' Oset unhonest-service 0
  u3 @% o- i1 ?
' R' m" k4 A% B" R1 x3 f) Q! w
set oscillation 0
& ^: Y9 }' ], A. c1 ~! ~

1 T- \/ I( n. I( B! w8 [set rand-dynamic 0

& T" g" Q6 S! l# A# g4 |end- l# |5 O& ^! H0 J; G  q

" C- M0 V1 h/ O' a! gto setup-turtles 6 |4 J- e% s. A$ D
set shape "person"  H8 p. q. O- c4 y: Z- q7 S3 S
setxy random-xcor random-ycor
% s# D  y' ~+ f: C  x0 x7 Sset trade-record-one []
# z( o" {& R& Y

3 H: m: q: S4 e( H& a7 Gset trade-record-all n-values people [(list (? + 1) 0 0)] 7 X5 [# f2 t$ K

% J: S) j, m9 s. v1 B% Eset trade-record-current []3 @% _  X7 A8 Y; B# [4 r0 _: t3 ^
set credibility-receive []- Y' v  _" ^7 v7 S7 J
set local-reputation 0.52 W; n6 V5 [$ F1 E* b" H4 T% M
set neighbor-total 0$ }& G& R  E6 U! Y$ U
set trade-times-total 0
  L3 y4 \  U  v7 Pset trade-money-total 0
6 b& s# |1 k: Y. U& cset customer nobody  b) s+ S2 o6 J& r3 e5 E# U
set credibility-all n-values people [creat-credibility]! M/ z6 }  v1 Y
set credibility n-values people [-1]; u8 e  y5 i3 ?
get-color' R" E1 S; L: N0 e! R( [' J' R
) X+ r: s' F$ F
end
& M" X4 w4 V3 i( M: E3 }1 D- Q) ~; o5 @  O$ a
to-report creat-credibility
. I( x+ L0 ~3 Q. G& greport n-values people [0.5]
& h4 Q9 w) G" E; c' \  o6 y! Nend
% o4 z5 R0 ?, i- e2 m( V# Z6 L2 O( h( o. e1 x9 }
to setup-plots
4 [* f7 P1 U" K  N4 m) ^+ g; \# ~1 p) w. V& \8 }" `
set xmax 30

( ]$ W' F; O( D3 Z) T
$ u+ x8 P6 U: l# |5 }  ^+ M$ sset ymax 1.0

$ V1 O3 G8 F' i
, C& h+ k8 R  m0 V& N1 _clear-all-plots
4 ?7 C) j; b- F# G
( B& ?$ h1 p8 P/ p9 i( o& o/ C
setup-plot1

2 r, k/ t* U& u; N% D% X
7 W* n+ I/ k1 Q6 p7 J( b+ osetup-plot2

( r& b) L2 a- v1 @- g4 m6 J
) O  a" j' I) f) n  t) lsetup-plot3
7 C% D: T7 |; f
end
* n$ a: u8 G" C* a3 S
4 t3 N8 j" W; F) Z0 Q9 x;;run time procedures
9 p2 C. j1 }: q6 x  Q. z
" }( p9 c7 {% G  X: `to go
6 X/ b) R+ W- e: [
5 D. o5 d8 v/ n; Iask turtles [do-business]
$ N# R, z- R! p# j* A
end
  \- c! c' O3 w3 B' E8 L( K
; r5 h. @! K( wto do-business
' Y8 q- H  M$ [  z; }

" c7 W( S' b7 d) a
( F6 J6 g1 n- t; o2 krt random 360

( k& m% S9 n! F# d; k3 P# e
8 s4 i+ z5 q0 T! Tfd 1

0 ?; ?; v8 c0 R" N9 [" v3 b  M' L$ G5 L
ifelse(other turtles-here != nobody)[
" J. I+ Y! x. e$ Q1 h8 x

; F/ K0 m* Z7 J) Oset customer one-of other turtles-here

$ l* v) e% z6 a/ L6 g* [. V" u$ ~, o4 L
;; set [customer] of customer myself

7 W6 M) y+ K  ~4 m1 o& t% ~* P& `5 Y$ @9 a* H. }
set [trade-record-one] of self item (([who] of customer) - 1)0 P7 V$ Y' x" P- i% \0 j; {  {* a; W
[trade-record-all]of self; p3 U, J+ p8 u% s3 |6 }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 V8 d( d6 S" V8 P3 V+ K6 Q$ V; i# w
set [trade-record-one] of customer item (([who] of self) - 1)
2 H8 ^, R( N8 L0 O( D! e0 I/ u[trade-record-all]of customer

; j" ~) b# L& j5 w2 c
8 r9 c6 G& E: `' Q; j; T" Kset [trade-record-one-len] of self length [trade-record-one] of self

3 Z4 E4 P+ X, Z( r+ a. R4 N
8 @+ J, j8 U# ~) H: P3 x& lset trade-record-current( list (timer) (random money-upper-limit))

$ i9 d' i/ ?( V4 f& T5 u9 z3 S1 J
ask self [do-trust]% u- y6 f* J5 J6 N
;;
先求ij的信任度
- K! C. a$ p) S; W7 }8 ?2 E3 V; d9 A9 J! q/ {3 C9 i
if ([trust-ok] of self)
' h5 F7 G( S+ s- T; v;;
根据ij的信任度来决定是否与j进行交易[
' d2 o6 c+ F6 A+ m( D4 ]% l. `8 Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 A! ~1 A# r) o6 g" G  c2 Z

% j8 N5 J/ W) z8 D( z' X) N[
0 D# l$ M  P  D- A1 |

( O) a$ N4 C( O4 Ddo-trade

+ V' N( Z) ^, ^
: m# H5 D: k' G6 z/ R/ c4 O% g" Wupdate-credibility-ijl
& e4 G$ s, \$ L  x4 \; k* U1 V' a4 n

$ m8 B2 ?& i& i. n. U! H4 Fupdate-credibility-list
# Q! L# P: n8 F  W1 U
- p, Q7 |4 \( V$ @: |
8 m3 Y+ `+ K! T- F
update-global-reputation-list

& _/ _5 ^: U  U$ A: j) G7 g- h2 H% h9 ~. G) T/ T7 ]& \
poll-class

  E  q$ V  _- X( n
8 f9 Y  x7 p! }: L! K, mget-color

' T* Q0 q+ K# t& ^7 P1 W& j3 Q5 M2 a' }
]]3 K5 ^, A" @; ~7 x  v6 D; ~. f; i

! N* j4 y7 E6 I2 D;;
如果所得的信任度满足条件,则进行交易+ d+ s# u* B$ R0 a+ i0 A& J5 W: H
* b4 Z0 T) B: d0 g! N9 |- X' n/ ~0 J
[
7 O5 E  t; D2 o& [$ M5 a5 Y, Z
, M+ e. |2 w, Z
rt random 360
6 x: f4 X" s+ {, c! c$ g' d

' M6 l; q. ?/ {1 z/ Z* w) ofd 1

* ^4 d3 l; N8 u% L4 E8 q+ O0 h1 ~: @8 }- N
]

4 d% F$ N3 q9 w# G
0 T8 \0 I% A" X2 ~end

- H3 J* V; U* _/ ^; a- J
' M" X% c8 K8 G8 P& N3 \to do-trust
5 s9 |% d7 f3 gset trust-ok False& j6 }+ F& D) b: W

) O' ?  Z% t, L

# ]# q' U. b7 v8 Alet max-trade-times 0" p7 P5 P. W7 |0 V% R- Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 y3 B& y8 C5 {+ m3 G; _; h8 xlet max-trade-money 0* [6 ?* J1 O9 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; R) H3 @3 L0 h2 \+ L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, F/ U3 V; P3 w7 y. N
: I1 U( q! W5 [- j  a" z) g9 a
% y+ ^* }2 A) Q
get-global-proportion: N4 |! B- W% A5 I' j
let trust-value' u  _$ n3 i( X, H" Z( F
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)
0 Q+ y& H: f4 v7 u  B/ j
if(trust-value > trade-trust-value)
/ @/ P. l; T0 ^" {- I) g2 U[set trust-ok true]
" t9 ]  \5 G/ e% Rend
7 R' k4 Z0 [9 O5 R& E+ `/ F1 @' g! R7 r+ E
to get-global-proportion
/ \# {& b4 _' V% a0 Z; l8 jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! p/ e9 ~" u4 u; }[set global-proportion 0]2 t+ W6 e5 S$ h0 d4 w/ h
[let i 0
% }' I& F4 B, k* i9 Z& }let sum-money 0) d& ~4 ]% x, G2 q
while[ i < people]
+ L9 ^5 U, t9 m) u& N[9 ?. q2 P" P9 e$ {% d' p) x
if( length (item i1 j9 \; J7 r/ I: A3 K
[trade-record-all] of customer) > 3 )
7 `' ^0 ?* ^8 S
[
( z1 E  \+ K0 cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 k' b1 q7 A) `7 g4 T]
1 i) Q  x# h. T6 b8 U  H; v]
% N+ X7 r4 R$ J4 q5 Llet j 0% R! w) ]' q- G1 Q6 x. l! m
let note 03 F& R) {- F( H3 j
while[ j < people]
6 s' o3 q0 F  j- L& F1 ?; ~" c0 ^[
2 e# m, R) b5 Y* F' A0 s1 H% _% xif( length (item i
  [5 C& S) t3 G) n( l[trade-record-all] of customer) > 3 )

$ R7 B, F1 B6 p' y; H; |[
. t8 r. I" \( P  S! z+ C3 g! w1 i: Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) |. w" u+ R, f: A) ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, a$ J# f% m; o: Q8 P' U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 b- K4 _8 u% k/ Y, u]% ]' `# P6 Y* w$ c4 C
]
6 K9 j8 Q3 S" Qset global-proportion note1 w7 I- a. ]# T
]0 W4 X% c' @' e
end1 g7 N: D0 N  D8 C: d

% N8 Q$ k( C, I) n: U1 `to do-trade" W' W. ^, I" ~0 P  \4 z6 u
;;
这个过程实际上是给双方作出评价的过程# @9 a8 L9 \, f% e! J) _; q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: O" n) A8 n, ^9 k! N/ l) C3 \& Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  S+ i. W6 a' U7 }4 E1 j3 Rset trade-record-current lput(timer) trade-record-current% d* N" W6 m7 g% B
;;
评价时间( {- w1 @( p8 q% o2 O" s' J1 I: O
ask myself [- o7 ?) b2 ]' K- R9 k! }) `9 n7 m* u
update-local-reputation  n& P7 }  B6 D
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ o4 W) H" P$ }2 L7 J8 y]- |$ u3 c& M# m; j! e6 o+ ?& b+ [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  _  k7 j, O: T# X& O$ P
;;
将此次交易的记录加入到trade-record-one7 [3 t' r) i% O. _
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ p! n1 u2 Y9 Y  A5 a5 Hlet note (item 2 trade-record-current )% g- _: t; M* I5 i- E
set trade-record-current
' G: Y4 p/ Z% y$ Q& s(replace-item 2 trade-record-current (item 3 trade-record-current))
4 T8 K$ N  ?* j: j7 w& c! h5 E
set trade-record-current& g+ Y5 {( d" x  b% I" }
(replace-item 3 trade-record-current note)$ y6 O% ?! _% O1 L6 j
+ Z9 E+ l$ U; I

  k  u* q2 ~- H8 m, [ask customer [
( }8 p2 Q  ]: M5 C, m; [, {. Rupdate-local-reputation" w$ V4 `& E4 I
set trade-record-current8 [5 Q# d& q- e. P) d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% ~% ^$ ~/ @, G$ P
]
( h! w- ^& s/ t) O' |* ]5 h. ~& v  V6 `8 N5 m1 R8 k& t

% k/ `3 H, r5 U1 L1 R$ y2 Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# m- J1 I2 c' s7 S# _! M% U
. Q: Z: ?) `& {$ N" Y  E$ J% I, b: k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% c/ Z% K" A3 z# |: n9 N
;;
将此次交易的记录加入到customertrade-record-all: g: [5 [" X1 N3 W7 k3 z" T* X
end8 L; Y( e* c; I( _4 u

/ @6 F/ e; ]- f3 Z" n6 qto update-local-reputation
3 g- ?& V+ w; C- {set [trade-record-one-len] of myself length [trade-record-one] of myself
) m" b# K8 R# D7 ?- B& d! r0 T8 w( J4 @' n8 A) u. D- G/ T
/ I' e- h' O' H# C2 }; {) [
;;if [trade-record-one-len] of myself > 3

! D" q4 e$ G& f. K( I  r/ yupdate-neighbor-total
9 `$ q4 x" i" b# `0 Q) {;;
更新邻居节点的数目,在此进行
* I2 e5 C+ u7 [7 nlet i 3* }1 _" M6 `; a6 s8 u; ]9 r
let sum-time 0& Q$ z5 r, }7 c: t8 W+ l# G
while[i < [trade-record-one-len] of myself]; V% @+ e" l5 u3 [
[' x) i' {; m) M- [& I+ T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  m( D! D# i! ]0 e
set i
9 S& ~7 A% Y/ j2 x: C( i + 1)

" t$ u5 P, q- D" G; I]  [/ D' t0 v4 S% E* e
let j 3; V) f1 p$ U, ^" u4 {3 h
let sum-money 0+ X+ T: r$ a* S. b$ a5 F3 ]# P
while[j < [trade-record-one-len] of myself]
/ |0 q6 B2 r# T+ B[# T& I/ U  K5 R& ~
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), Z; ?# w/ Y* y- u) u4 G
set j5 g) N- H" x# ^; g1 w
( j + 1)

. N& y$ T1 h0 k% m% X) S]
( w6 C5 S1 W8 L0 u  M, Zlet k 3
! d3 X' i  ^. d; Xlet power 0/ Q. O* T& S3 J' G7 G% g: x5 m
let local 09 S- \" h9 E6 m
while [k <[trade-record-one-len] of myself]% x' a9 r: m$ v  x
[9 \: I9 ], L6 O5 ^6 t
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) 6 s: {& _9 \) T3 m8 {
set k (k + 1)0 @. l+ k% b* X+ X5 q
]
8 C- Q. _4 e% {set [local-reputation] of myself (local)
. G5 Y8 m; G# r1 q( eend, X) h+ p% q. b2 _& B3 T
  A8 D0 M; m4 v2 S6 d4 z0 T6 N
to update-neighbor-total+ c7 c) r3 R" ]8 A0 P3 l0 R. k  b

' N- M) c1 D" Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 q. C0 U! Y. R- U: J3 }( t8 G/ M+ b$ h+ `9 q- f! n1 M" L5 J/ O

6 B- w- Q* N6 m3 E* @+ Y! k1 a9 iend
5 Q3 q% B& }8 F  ]  w- `3 Y
: |$ g' m8 r) \# l7 J9 ]to update-credibility-ijl
! t% j5 H4 G1 i2 u3 n. ^% O2 z5 {5 y' ?& F
;;
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。
- r8 J( W# u( H  I2 E  `6 x0 Elet l 0
9 j) y) F/ I& L7 s" \; ?/ Lwhile[ l < people ]1 N9 M! r0 A1 r
;;
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, a/ `+ T, i9 y4 }# u7 _
[5 h* s  G! a  R" l8 j2 U4 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). Z) D1 }! J* j. j
if (trade-record-one-j-l-len > 3)8 S' m8 ?" V, K3 d( l* F, W
[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
' a" y8 p# [, V+ {  `( P5 j* Jlet i 3
8 _; U' v. R% \( G$ Xlet sum-time 0( N; G& u4 {6 i$ }! K1 Q
while[i < trade-record-one-len]( o! f8 M- I! ~8 u: R
[( a# e( {6 \1 t. Z, H% ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 f3 N2 [" _* A$ }1 s5 E$ aset i
0 @, q9 K$ N) `4 V  e( i + 1)
8 L& U: U4 m5 e
]
! n. z, g$ @+ tlet credibility-i-j-l 0+ A9 I/ `8 h6 x( p
;;i
评价(jjl的评价)7 R# Y: {2 ~0 d' q/ G8 z+ y0 E
let j 3  w" Z; \9 V; _: K' g9 b+ \6 h) X
let k 4
( v4 {  K. U! q4 \while[j < trade-record-one-len]* P' u5 i9 i7 B& m$ N+ y
[! i4 d1 [  j: x* r8 t9 N
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' b, s0 a3 s& _
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)0 ~# J6 Z. @- }* P
set j1 }- y- l. ]# t( t5 p. C) i
( j + 1)
0 @2 L& a# c8 H' |
]8 X4 P9 J1 E  |
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 )), z+ h; q; u4 p, @8 Z
* Y/ L! X9 x0 e2 j% M6 P
6 H# K+ D! K# W! i
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 Y  m7 ~# R! c! d) c+ _;;
及时更新il的评价质量的评价
! m% q8 a/ {# h" J) N2 e( lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ @$ v! z/ l4 q" m) Q
set l (l + 1)2 ~( ^1 X( J% q" q! I
]
( ~3 g0 Z# `! hend/ n+ z7 `0 [, u# D8 c* h9 U
! V( ~4 o% Q( S
to update-credibility-list
* u# `- d" _* r! @* w% elet i 0( Q+ E+ f8 t& H" X. N
while[i < people]
; n* _# _' x! M4 z2 n[
4 T8 K6 ]1 M/ nlet j 07 u" \; V7 g, ^, h
let note 09 s, v$ r: E6 D" V# |5 [+ ^
let k 0
2 l, [) w* D" [2 }( x4 ^;;
计作出过评价的邻居节点的数目, [0 v" d( E: |) m. s
while[j < people]9 G, L7 {$ K# a* \& b# ^
[  n- o* z  C4 {3 U
if (item j( [credibility] of turtle (i + 1)) != -1)+ Q; C* A$ o4 ]& b$ h
;;
判断是否给本turtle的评价质量做出过评价的节点
& g. W2 a  d7 T. H[set note (note + item j ([credibility]of turtle (i + 1)))# O' B* ]* O# S/ d+ _$ N8 ^
;;*(exp (-(people - 2)))/(people - 2))]
3 T" D9 Y# p+ Y" N# `
set k (k + 1)
4 b8 u& h! p$ n) f& S) s]. m9 s' \9 A8 \3 }( s, {, }
set j (j + 1)* {% `9 I- j$ A( O3 Z7 F2 T
]# F  X2 E. m& I6 ^( |: L
set note (note *(exp (- (1 / k)))/ k)" r) h8 }5 }0 u3 I; G
set credibility-list (replace-item i credibility-list note)
$ {  |! t2 j. D. q1 K3 V. Cset i (i + 1)7 M% u6 `& r1 [1 N
]4 F7 b: b; a5 M) J% [/ T' q3 K8 q8 p
end
8 O, e6 W9 z- T: A+ N. C
0 j, `% ^0 p1 G! ?7 l9 g) X8 bto update-global-reputation-list2 S1 i5 C. E; P8 V
let j 0! C! |; X) n' Z; j
while[j < people]
  L$ k2 q- W# G[; k: X* X5 Q) u  h
let new 0
7 ?+ G5 @! O8 z. J7 D8 V: E$ x3 z( d;;
暂存新的一个全局声誉2 M  x. N4 W9 D- W; [# w
let i 0
4 Y; j5 e+ h" u3 slet sum-money 0
5 S' R9 N/ I3 [- W( j  Q/ Z% |let credibility-money 0
4 ~) `  m/ f# P& w& }while [i < people]' j% [1 E6 D( U9 o& U1 X; C
[- {" u8 R8 f5 v" o9 A" `% H* d  }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 `/ d9 I# N) j+ E5 }: o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ j' [0 M! `5 u1 A6 p& F& fset i (i + 1)
4 @0 U$ L/ @) Y3 v9 h]* e0 c9 u) i, r% P" {$ f
let k 0
5 ~& `+ I+ S' E) U9 ~2 clet new1 0  z, U! k8 x) C
while [k < people]8 p+ }& f2 h; n+ s- Q
[- g* @8 ?: a4 T' J) }2 s3 X
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)9 W( y; i0 s8 P1 R) a9 {1 G
set k (k + 1)" L' G  l* J4 q' T  {8 {
]
5 m3 M' Z6 y7 l" o: Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # K* b: i' B- o' _  V
set global-reputation-list (replace-item j global-reputation-list new)
- L/ F0 j/ I6 a/ G- e5 uset j (j + 1)+ @, f" P' f3 h& M
]
6 \! P1 K* N$ Q- ^8 z+ M% C6 rend+ ~& s1 o  L( z

- @. E# w! x  z0 P6 I# C  O; W& u. m

( l$ q1 y6 d, Z: bto get-color
3 {$ @$ I2 \! r3 a8 C5 Y; b  Z) I" s' S' W. p' ]9 o
set color blue
2 f. A: W& u9 s+ R  x7 J5 ]. |  Z
end$ @4 F1 f3 l9 ]$ {6 d4 K
5 e1 V, i/ v3 _9 y5 x
to poll-class
9 D  Y5 L3 p2 S$ [3 ~. f9 ^( mend# o6 [7 H, B) e' ^+ r5 `

* X, W/ z% b+ Z( Q: qto setup-plot1+ m4 H  E7 E& M  J3 `
( Q" ?- Q- h+ j# q# m! Y
set-current-plot "Trends-of-Local-reputation"

2 t) ?" o/ g7 H8 @
  y6 x- M/ F- c3 zset-plot-x-range 0 xmax

% g! Y' K( R  c) P/ l
+ t% v0 J  T3 A1 ]8 j, uset-plot-y-range 0.0 ymax

. m2 ^  M6 H$ E' B" b  [2 send  d: v$ H1 h8 `
2 h1 ^0 _9 v/ m- u3 j/ s
to setup-plot26 y2 Q0 E6 o+ D  R
  a+ f' _7 J( N) I
set-current-plot "Trends-of-global-reputation"

6 U1 w+ a3 \0 o: ?& Z+ e! t0 \, [0 f  S& c: R9 @: w
set-plot-x-range 0 xmax
; E, C, V2 ~" c7 M) B8 v
* e: y1 w3 V/ i% u* ]+ Y* \! F1 s
set-plot-y-range 0.0 ymax
' g; C* T$ V" O
end
; v9 b. }8 y3 e: F7 S  `: a/ w$ d5 r5 A. J3 F3 `
to setup-plot3
5 N; T# ^4 |4 Z/ k1 l
" x" q4 }* X- ?- M" Rset-current-plot "Trends-of-credibility"
3 g& {* v1 m; y  z2 D. F/ b
. E$ a3 v9 r, u) K
set-plot-x-range 0 xmax

5 W: o9 N8 w# ?' m; i! n* R2 f4 h2 w  h8 W3 k
set-plot-y-range 0.0 ymax

7 V/ s( ?. t( @" z3 s$ _$ xend3 i; L' k/ n' U9 R  U
! p) s6 S! Y! A9 I0 Y# ]. T( q
to do-plots
6 z4 x; b/ A- w, v" C/ K. ~5 @2 vset-current-plot "Trends-of-Local-reputation") F- _9 }8 z" ^, N' _/ I
set-current-plot-pen "Honest service"
' I1 [% k) L# F& mend2 f3 d, S7 P8 ~; a9 v
9 z% Z* Q  v$ R; R3 Y( G
[ 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.
1 p: q1 I# [2 n& P- w" ~* s* g
' H3 c! _# I3 q) |# R0 j# 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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