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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:, h/ g% r: D$ g+ V) c$ t- j
to do-business " |: ^& }4 N; D% {
rt random 360
0 b) w3 A% G0 V; ` fd 17 @9 A# ?( p; W
ifelse(other turtles-here != nobody)[. q& c/ h$ O; Q4 W7 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.: k( i' G% i6 r  M. W$ ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 e, K) w! l, n8 T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) W  ~) T% b& |+ B8 Y! o5 a/ [
   set [trade-record-one-len] of self length [trade-record-one] of self3 }* ^4 r2 u/ w+ S8 }7 E( W
   set trade-record-current( list (timer) (random money-upper-limit))' v- m/ v4 L7 D- W: W' A! g6 Q, r

5 K' |. p/ |& x0 _问题的提示如下:# r5 d# Z( D) b  U% I
! ^/ P) E  w$ n* b% t* X! l
error while turtle 50 running OF in procedure DO-BUSINESS! {. z0 U" b6 f9 `& v
  called by procedure GO8 P8 b: e% A% w& J/ L
OF expected input to be a turtle agentset or turtle but got NOBODY instead., k, t1 T- d$ F' W; @# d8 K( P7 [
(halted running of go)4 G/ N5 V4 A) E
& h$ l# t2 f9 N
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~~! H9 Q2 u- \( \4 T6 K4 z3 w( 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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参与人数 1仿真币 +30 +2 收起 理由
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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
3 n+ M( I9 l) e5 {  v1 pglobals[9 b2 F) f, R* t
xmax6 _. U: a- @: O8 Q
ymax
7 z7 L& f0 T, h3 H2 j9 Eglobal-reputation-list( ~8 Z" H' `+ \( P

0 X4 _8 `- a4 b' C) L+ U;;
每一个turtle的全局声誉都存在此LIST1 E" D8 r% n; ?' M4 s0 J& q
credibility-list
9 a; ~4 ~, ?& L6 j9 {4 G;;
每一个turtle的评价可信度/ @& T3 P& R7 I5 c0 V, ?
honest-service
1 t" }; D# x3 a: d5 |/ `- p* Ounhonest-service1 A- @6 p# K; u
oscillation
0 I7 }1 q6 t; s. P9 r7 S! _rand-dynamic7 |2 Q2 {* }: q
]
* `, Z  G# R2 v* L% G+ ~; A& I# F$ [7 N! m5 K
turtles-own[/ t" L5 y9 M0 r' [2 ]/ x) G
trade-record-all
: H1 t% M& V2 G8 W5 k- N;;a list of lists,
trade-record-one组成
* g! R; Q3 V0 j3 d/ ztrade-record-one9 ?+ A! a+ ?5 G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 r- a, R: [1 {7 p, n& I
  Q& U5 n7 s5 q. n/ }8 K" q* a;;[
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]]
* G" W3 l7 P8 I2 V; v5 p9 Rtrade-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]
) m1 X) h) X: I' Ecredibility-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
+ w! X' }; U' t" d4 ]neighbor-total: v8 A0 Z& g0 H) |( v. f- U$ A
;;
记录该turtle的邻居节点的数目" L1 N- D& D$ {- C% E( V" w1 o0 ~
trade-time# @4 i) p( @. i0 G; E
;;
当前发生交易的turtle的交易时间5 T& \- z7 ~" {, C8 |+ n& q( y: x- T
appraise-give/ {% ?( L0 ^/ M( W
;;
当前发生交易时给出的评价
7 s2 t1 \) Y$ n. w; {4 h, [8 Rappraise-receive9 g: @) G, ?7 K3 ]. w
;;
当前发生交易时收到的评价3 n+ V% Y2 ?7 X5 \
appraise-time
4 z4 u, G; T0 R6 ^/ g;;
当前发生交易时的评价时间, k: V, s$ m4 p% @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ z6 J7 V9 l5 l4 g  F& K  \
trade-times-total; l& j& E( u! J- i) T1 P
;;
与当前turtle的交易总次数
9 a/ z# c- g& @  ?trade-money-total
5 @. G& ]3 Y- R  u" n;;
与当前turtle的交易总金额
; d  p' E8 N- F  X& b  Dlocal-reputation0 y& A/ P6 o5 R/ f" ^1 u2 {
global-reputation
2 K$ ]1 s. a: O1 A  Y/ I  ?2 tcredibility. z9 |% d3 B- i- r2 O' k& ^' w
;;
评价可信度,每次交易后都需要更新
* z& B6 [6 H$ `/ ~+ Icredibility-all
- f9 L! i7 n2 Y5 Q* W9 S;;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
# V6 _* A9 C- S1 _6 G8 r$ @8 w8 v2 Q" y& Z
;;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% A: z' W8 p+ I* C3 J
credibility-one
4 l* m& {  W: V% t6 @;;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
% \4 ^5 H( n$ j/ R% z9 Yglobal-proportion6 u* J* W2 x' P& p& m
customer) z$ n0 P* y" ?* g6 s9 u% h
customer-no
4 A7 P! B+ q) r  b9 y. ntrust-ok
1 c  Y7 F; i: P  ztrade-record-one-len;;trade-record-one的长度
5 e3 a7 R4 t4 b  N/ f]9 H$ J: {# d6 c" X

. Q: m% {/ `) ^* r0 Z, L0 k;;setup procedure: p( \8 F, |, I! O1 M  C

* W7 ^" \5 L/ [; i; j& Mto setup4 t& g) F4 u, N4 J; G9 w- x/ ^

& c8 g+ V! X9 |" U# Fca

- \5 Q: k7 o" ^/ Q; C. p, r' t: v, a# |2 f  N
initialize-settings
5 i/ I' Z, p* \8 A! D

7 z+ p! r) ^  y' bcrt people [setup-turtles]
7 v" g  k  \2 i6 R  n

  {7 z' c4 b0 y- {/ O& [  O  H3 Nreset-timer

- o* M3 `" T/ t" e$ i0 Q% M5 ^. A
poll-class

" ^( z0 g# F. t, n$ d: S5 g
& y9 n4 J2 g. Csetup-plots
7 @4 t7 K2 u1 Q( ~1 ?8 G/ P

: l/ F( {" Z# udo-plots

' R& c/ _) G1 a0 M2 u1 cend
( k6 R: h5 ~& ]5 I3 f0 e6 n/ T2 I& x& A5 Z6 J+ A2 y. E/ d
to initialize-settings
. q) k6 c+ J6 w. O; Q. }! F9 D7 u) W+ J, L8 I) @  }! x
set global-reputation-list []
( w/ ^) Z3 V' ?! p) \0 v/ G

( U7 o: }5 O5 Y' e8 Zset credibility-list n-values people [0.5]
: I+ c1 a* H0 b) x% `

; H4 k  R& X! @3 sset honest-service 0

* a! H7 Y7 m  _; b& G" G# R6 i- I2 h, M5 i
set unhonest-service 0
) B4 r, h6 K8 I4 L+ f. m/ t' f& ^
. I, C: q1 ~6 `$ `' x3 W2 \0 ]% D/ N
set oscillation 0

+ {$ Q7 E2 ^% k+ O  [9 k  _8 C" A/ j7 L3 i& @
set rand-dynamic 0
$ b3 L- r. ]9 i" I
end
0 _$ q) b! ?4 T+ L
& o3 U2 C! Y4 i( _) C8 B: Y9 |7 S7 `to setup-turtles % w4 r' [& }2 w7 u4 d; a. k% p! l
set shape "person"
; }* n9 R1 u, K* T9 F4 D5 psetxy random-xcor random-ycor
( T4 o4 H8 N1 Kset trade-record-one []
" h5 A$ A% r/ z9 A5 }4 l: w$ o

/ o/ d% G, L* z( kset trade-record-all n-values people [(list (? + 1) 0 0)]
1 W# I9 h0 n& p+ N- N1 e( e

' I& K& }/ G: R" Hset trade-record-current []3 c% L  D  I$ U. A* i4 v8 _# ]/ N9 W
set credibility-receive []0 \" ], X4 O* b9 P9 o1 y
set local-reputation 0.5# Q8 D, W9 \) d9 Q, C, _
set neighbor-total 0
  Q, ?3 |! u$ Xset trade-times-total 0
& \* z3 A/ p' X) {, P6 m' @0 {set trade-money-total 0
& z" q! q  A9 Cset customer nobody' D  R% M& u- h3 @5 p. H+ W+ u
set credibility-all n-values people [creat-credibility]2 H. V% q5 u$ d6 A0 p1 ~
set credibility n-values people [-1]
0 g/ h, u; d, D8 V/ ^5 `get-color
9 }! r. Z, H! {. P8 y6 D

* n) T5 m& i  `$ r  Qend
+ C4 t& s/ P7 G- p) Z# y/ I& z+ F! H$ o! [# j! r, O
to-report creat-credibility+ w5 ]; o) C; \* m/ B' k
report n-values people [0.5]
% h% D- I6 _% A4 H7 A# Iend
1 Y, E+ V. s4 }9 Q$ Z  E
7 N3 [' C0 v; e0 `5 _' W1 J0 Q2 Xto setup-plots9 W3 I* b0 W3 l& V: a

3 v7 L) e) D2 f# b% Gset xmax 30
6 C1 a- N) o! f0 N
$ m5 H/ i6 ]1 z& v+ n6 ~
set ymax 1.0

( e( ?/ e9 N4 ?3 f; e2 z& T
4 \) \) w: m, @9 a% J8 q# |clear-all-plots
* T' M' ]( W# P0 i

4 M# `+ o8 r3 M$ o8 f6 ^, d" Csetup-plot1

7 H- {+ d5 }/ x4 U: f% ?# \6 \) S: q
setup-plot2

4 h7 T; z5 ?; m# @: _- d7 I. G- M( x/ O& |& c
setup-plot3

& U; [3 r$ u( o! D' [, zend
# b# {8 J2 [' w& f/ g+ ]5 W5 F
8 a+ ]* v1 u' q;;run time procedures
4 d; {* U; E9 B: ?; l5 R$ K# S& C- e- K% [
to go; r9 l* H8 B, \" S2 Y4 V0 D

+ t: x0 R1 N: |( B& O9 h9 {ask turtles [do-business]
/ k6 x: X$ T- g9 }3 U( A
end
# Z8 q' Q' H2 c! ]" q& w! f5 c( q) H. X
to do-business 5 H; z. |$ ]+ t# o
! M4 k4 I  |" ^& a+ T. H" o" i7 [
" `3 u. D$ z9 V1 I2 I" z
rt random 360
2 l% ]- `! z" V% z/ i
2 ~7 P; Q. O" Q; c9 s1 M
fd 1
/ K7 o3 m' M+ p/ Z# W1 S' {

, p2 N. E: ^& t- q- nifelse(other turtles-here != nobody)[
( {  n! [3 r2 P7 b3 Z- c( F
2 k! S7 I8 v2 Q" y( ]
set customer one-of other turtles-here

! k$ C& \  ~" \% S# d& g9 ^4 F7 A
4 e$ ?' M! p# B6 _2 \* v;; set [customer] of customer myself
, H: J, Y: m& l+ s  F& v6 c

( G9 D8 L- _& u% Aset [trade-record-one] of self item (([who] of customer) - 1)
- D1 g% F* C. N1 I7 ?5 n[trade-record-all]of self
: a" g, |8 |9 y( m, \) W3 N! L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# Z+ r9 l& [; r( G* ]) T. p

0 Z. ~& m1 [/ z7 zset [trade-record-one] of customer item (([who] of self) - 1)' W: p# Q# W; ^! J" F5 g' D" K
[trade-record-all]of customer

  Z9 i/ O  ?6 N7 d) v5 q% V, N8 I3 g( `, |( z
set [trade-record-one-len] of self length [trade-record-one] of self

# S( `0 e. X2 @/ {
3 @$ L5 X: h5 G3 v/ D0 H3 Nset trade-record-current( list (timer) (random money-upper-limit))

; |+ ^  Y; m  S( i$ A9 q/ e) M9 l* g3 K# k1 D' B  @
ask self [do-trust]5 G$ ?1 \$ E7 X/ t
;;
先求ij的信任度
* W% n  m* Y! V% a/ v
$ [: |% u7 c3 g5 sif ([trust-ok] of self)% a, f: ]7 c9 `6 J
;;
根据ij的信任度来决定是否与j进行交易[/ n0 C- I% T' k7 b9 t+ I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. Q. e0 D/ D; B: M9 \# F' w+ M
: \& l$ [2 i% V4 X# u; c4 {
[

% e3 z) V8 p" R# t9 e* N; Z5 p
do-trade
, B! U0 {+ v2 f+ Y4 F# s' E2 ^
( R% X$ z5 F  X" j
update-credibility-ijl

5 }* m0 ?  `; ^6 z! R: O8 O
# Z5 X. R& f( x! c; \/ V$ \6 hupdate-credibility-list
/ a4 C, X! ~1 \. q& l+ ^, I- h
) b: c  N/ Q9 h4 o

2 o& d. z) e5 l) Z& g6 oupdate-global-reputation-list

& Q6 E9 b# g# k0 ?+ u3 P5 }- V+ }* e* A, `
poll-class

/ H7 d  t5 a4 P3 x' \& h7 j# R/ W, `" k0 h+ O
get-color

# \  M6 ^; g" b, R. d0 @& z; }5 M$ ~/ G1 I5 m$ [
]]
! V7 x* E5 A2 ?1 ~) `9 e/ D" j
0 D; o; Y$ H3 ~( _0 C;;
如果所得的信任度满足条件,则进行交易. W5 }6 t0 \9 V: z8 X
3 W0 k# n: _% ?* C
[

0 D! I. q* F, n* r/ o2 f
  n0 ^" P; G9 A$ Z; Xrt random 360

. r7 j! m3 J/ e! y4 D: z7 o6 a+ }) D: L+ o' h! d
fd 1

" X, H# s! B" Q; }; x6 q9 @8 {) j6 Z# u) r7 r5 x5 Z/ y0 G2 z+ C
]
9 _4 v( w1 P* D' |* x* F) |% f
# X0 N- K' q: N4 ?
end

) Q2 m. k5 \& ~+ n. k6 Z
& r* p8 _/ x4 qto do-trust
$ f* W. K, g4 T5 K0 O0 @1 jset trust-ok False/ ?) G* d- f5 W9 g
0 g# q% Y4 G4 h1 X7 R7 [

- p% D/ f- ^  V! k( olet max-trade-times 0
; }1 w5 u: b+ c3 o. k8 r6 \3 V# jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 N3 B: |$ Q. `1 }! f7 @! A) m
let max-trade-money 0" y9 y/ g% o+ Q. {  ~) |; W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ F) w1 A  H- c2 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) G; R$ v; I5 U. {& S5 E4 T: E0 f4 ]3 w& T
$ d0 s/ h  Y3 Z/ T
get-global-proportion% J$ `2 L. k6 M
let trust-value7 s2 e0 x& `7 w$ I% B" G
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)
7 w9 X; t: S; [3 E0 ]! O) l
if(trust-value > trade-trust-value)4 t+ }) R" _, d3 y9 L% x/ S& p8 i
[set trust-ok true]
7 M3 E" w% ]4 L( Z( H' n& Fend
4 n0 p  K' N) \) e+ e( H) d  @0 a( J- F- O3 A* j# B
to get-global-proportion& {  W  [/ _- e- k- G  D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  C5 i( I- `' e, j[set global-proportion 0]6 p5 o% a- Q# s" w$ C
[let i 0
  @9 Z$ S/ ?' k5 v2 ~3 xlet sum-money 0. v- Z" L: Q: z. G4 X
while[ i < people]  H6 e  `: p1 l, T& q$ |* B
[
1 F. y) @( a$ B5 B% _$ \if( length (item i7 s# I/ I8 [) w0 b
[trade-record-all] of customer) > 3 )
2 m* @. p$ [- I- K
[
2 x# `# ]4 _# g* mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 H2 @7 T! t$ M/ w# S
]0 k2 Z( \% L7 b! y
]( }- o7 e. ~- Q; o& r8 C% ^
let j 0# ~) O, ~7 v' Z1 E+ Z
let note 0- T( @$ ~/ l: q7 P$ X# K/ Z
while[ j < people]
  G( m  I8 I0 u: G7 t7 i5 B[: _! G8 t' U! h' o
if( length (item i
5 V9 D0 X% M! G[trade-record-all] of customer) > 3 )
. q& c2 H* P9 x8 h5 d1 i
[
2 I+ U% k3 Q4 r" X2 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 U1 k! V1 q) \# ^4 e* T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 ?- x5 R, P& ~5 I! H7 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, S4 I7 A/ k9 G) {5 p. k9 b1 m& x]
5 i( I! ^% b; {0 |$ h+ ?]
! O9 i& C1 W5 m* L* R% E4 e0 ]set global-proportion note
) }) W! b( O) O4 `]# w% z$ I: ]/ G$ `
end
9 m/ z9 B$ T3 S# Z2 u9 @$ A8 b' H8 Q+ i' g! x
to do-trade( f' o  ^1 I+ p3 s3 j' W4 V, M
;;
这个过程实际上是给双方作出评价的过程
0 X' p% k. ~$ @$ F$ H6 Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. u4 i! k  A7 C! V# G- cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 b' N/ [( J, G5 [set trade-record-current lput(timer) trade-record-current
5 ?  u( i' i- r; ^;;
评价时间. v4 K! h3 ]( m
ask myself [
  r3 `5 v3 m" Supdate-local-reputation. C+ X' n+ v, D% r
set trade-record-current lput([local-reputation] of myself) trade-record-current, P9 g" w- Q- ^: B
]+ R) {6 X) {; K0 y! Y/ z. I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- v" L- I2 l7 f7 t. z;;
将此次交易的记录加入到trade-record-one
9 X& S$ t0 S" E. E4 fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 J) _: S9 y2 A% e3 I7 z1 D: q; F
let note (item 2 trade-record-current )
/ p: @. s" S! o: |& r1 l" eset trade-record-current- k3 Q$ n. t( A
(replace-item 2 trade-record-current (item 3 trade-record-current))

* t, t8 z) n$ N: ~6 D9 F# V% bset trade-record-current
  u% E" R* l7 A6 O, Z6 n5 O( s(replace-item 3 trade-record-current note)
" O3 j2 v8 N9 ^+ A1 l& |6 s
$ J& X! w/ q6 a( L2 V

& y% v7 H+ k0 g+ C& a+ O& Aask customer [
9 J- z# u) a$ L; d. Vupdate-local-reputation
& H4 P3 J  G: ?+ J, H7 y) K, z# q  Aset trade-record-current
# o, B! [3 [! i  _- g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 E) d! o: C& i5 ?( g
]
0 N) {. }& S/ K0 ]" I% j+ o/ I; N/ C3 U* E

1 L7 P) O& }) h  ?$ Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 j- g3 z1 p5 o4 B4 L; t  B

7 _% O3 x! |) Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- `% k/ M# A& Y9 h9 \) J! i
;;
将此次交易的记录加入到customertrade-record-all
' {0 U' K+ Q8 F* J, R' n+ `end) z& R1 O9 N/ ^" }. k( K

3 y% c( z; E% Z+ uto update-local-reputation% e. U/ b, h% Y, h
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 o! \; k! n. Q% j! p* O; V6 F* J- z) X) k, Q2 E$ L
" V) W) \3 j, \1 e6 Q
;;if [trade-record-one-len] of myself > 3
* I" y* h4 a+ v( Y. l4 q7 l" h
update-neighbor-total+ l* ?  p9 q* ~& V
;;
更新邻居节点的数目,在此进行% w8 ^& m1 ^% R8 R0 W& ^3 {
let i 39 P: u7 c4 _+ z% n
let sum-time 0& Y0 F' j2 _! F. G
while[i < [trade-record-one-len] of myself]
% G% F0 `& ^: _; S* t[
$ g/ z! p* C* z% P5 k4 h) tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 g% j( g% N/ A0 qset i+ h% w9 [: f& u; _
( i + 1)
0 G) D$ T9 f( o- x/ r3 {5 ]1 M4 |
]
! |# C7 L, e9 M* olet j 3
9 |& l" X4 B' q! _) ^6 r6 Glet sum-money 0
/ \& s* ]' ?! r2 `while[j < [trade-record-one-len] of myself]1 B- o5 F, \8 ?% V3 E' S8 W
[
5 z1 e2 r+ H% M7 tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; e3 z$ S% F. [7 I* F0 q7 \set j
4 h: b4 c, h$ g( j + 1)

& t( R# ]+ b6 s8 w]. }* {; ]) T  M. T! N! {
let k 3
. ^/ K8 _$ u* [% v5 E" E. qlet power 0
9 x5 p6 ]1 T+ H0 X: ^let local 0) |7 n; m: V! g6 {1 l# o4 ?! ~
while [k <[trade-record-one-len] of myself]
. {( k" O0 x" D% w9 d" t3 b[
2 S) k" c: W' A+ V# ?6 Lset 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) ) Y/ Z  |8 z: E7 [! A; }% Z! Y
set k (k + 1)3 u* y9 U$ J4 |4 h5 g5 e$ v+ D$ `
]( B6 l  k) [6 R- j! K5 F
set [local-reputation] of myself (local)7 v6 v$ S5 m. U, B
end
. x$ L! u- B8 ?3 H) g
6 b! O9 {5 r1 _" O% }+ pto update-neighbor-total0 k2 {& ]% ~0 u0 o) g
5 i2 Y4 N2 [6 ^' s+ B* q8 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  y0 [/ A3 R% Z! k& n

+ H' n( h# J& _

+ b( V$ r5 u* a0 _end1 @  T& f" L$ f8 d

. \3 ]  o, I" H( F, t2 v6 bto update-credibility-ijl 6 v& P+ i7 x+ D4 M% a

0 \: X5 n* E" o;;
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。
3 {) @5 [) ]9 I3 f8 ulet l 0
- V( n2 `# y, owhile[ l < people ]: h6 N* |, g' D' P! [
;;
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5 x9 U$ y8 g7 M, q5 A. t% m' a
[
1 ^8 o$ D& G2 k. H, U3 r% a2 elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 U/ o4 V: u: V1 r- b
if (trade-record-one-j-l-len > 3)
/ W9 e/ s' t, f' u" W9 x[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& Z/ S. V& H5 f3 M: Jlet i 3( b& n2 u5 `/ H/ f0 V: i
let sum-time 0
1 Y: `! B( D9 B# V; N0 y! k# Dwhile[i < trade-record-one-len]
% k9 Q) ]: M( C4 y( ^2 Q$ B[1 Q8 T; z* F+ A3 f3 w& G5 O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 f4 u+ `2 ^8 }; d- v! z/ B3 b
set i
7 N, f' I: J/ n$ I3 B( i + 1)
( e! N7 @5 f7 O4 E- R- q
]; n& K) A5 R9 O  V5 u/ H* b9 e8 [
let credibility-i-j-l 05 U1 g& y. A+ t
;;i
评价(jjl的评价)
0 y5 @, M4 I$ A5 v  `+ ulet j 3
, F$ }& V! m. N# w: O- Plet k 4  E+ w% d' q- ]6 M& M
while[j < trade-record-one-len]
  g* H% i0 g& \2 S- t+ c[
) i& v) Q5 m5 u/ n( A1 Z* Owhile [((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: N# V* z' ^) h/ a' ?0 q
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)
; \2 J! n0 A8 l( w# h/ N6 Pset j0 A1 ?8 X  g' P; U) z  M
( j + 1)
# f+ B3 V+ X3 O* q/ K
]
% d* D6 o5 N4 ?* r* Pset [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 ))
4 H4 E* j  m9 N3 {4 s* M* z! D0 i* X

& ?6 y' P& U. R; [  x2 D& slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 d; U6 x# X1 Q7 W% V;;
及时更新il的评价质量的评价
* h! O, R0 a) c3 Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ v$ h& ]( q$ u9 C# _* r) Yset l (l + 1)( w( A. Q6 W6 d) Q: G! b
]# ]: a! W0 ]6 ]/ c. Z$ A# p
end
' p0 Y9 D5 |/ D; b) t9 H' o1 A; j* _4 V  i
to update-credibility-list% f5 o, H9 @5 H9 \# Y) C4 o
let i 0) {) D0 i: R  x: l/ Y. m
while[i < people]
; ]' J  z$ [9 L+ H/ Z* w: Y[# w6 D2 B* ]* u6 i  O! I
let j 05 p$ m5 _4 U- L' n7 C# O: H/ E
let note 0
6 h! z3 ~' r+ b  `& slet k 0" d) {4 T1 r' J
;;
计作出过评价的邻居节点的数目- \0 O- K% y* o
while[j < people]
. B& M" ^2 l" n  R[! B8 l. e. m5 g- b
if (item j( [credibility] of turtle (i + 1)) != -1)
3 V  }" D8 _9 L;;
判断是否给本turtle的评价质量做出过评价的节点  z; C" e  x) F. v( b1 ^& n' O6 g
[set note (note + item j ([credibility]of turtle (i + 1)))8 i0 z' I# t1 d2 M9 \7 u2 }
;;*(exp (-(people - 2)))/(people - 2))]

8 {( V7 i: Q) Rset k (k + 1)
( w2 Y5 [2 {0 G) K" C]( Y  Y+ x3 K4 T4 v4 _6 g* |
set j (j + 1)# ?! y! ^( j  d6 o
]
7 Q8 V1 a0 u2 C) F% ]set note (note *(exp (- (1 / k)))/ k)/ g' Z/ |1 f7 W) f6 b0 k
set credibility-list (replace-item i credibility-list note)
& N+ g- v  s2 _' S; j2 vset i (i + 1)
# x1 M, t5 V4 M]
/ X- t/ T2 G4 Y* m3 |; O. {end
9 V8 D6 H  @( l- g# H9 l5 g; q, p; A7 D6 e- K5 `. t
to update-global-reputation-list
" W/ O7 C6 O8 b& o  W6 Alet j 01 W! B+ L& M$ }
while[j < people]
% x+ [9 a' E- p[
2 s+ u) S7 ]  o7 blet new 0# n' X& |. v1 q' e0 C7 v
;;
暂存新的一个全局声誉
# Q6 Y& z. ~  V2 O% ]2 |let i 0' N$ ^  I' y- P' p$ q3 x6 a
let sum-money 0
+ O  ]* i6 n1 O3 Q# K5 Elet credibility-money 0  `+ A1 g8 w5 F8 I  n
while [i < people]
% p. @4 j. T$ Y8 m[6 C' d- l$ g! w  O% T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% A' d3 o/ T3 L5 a. m" g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; W0 r3 v) Z& Y' }set i (i + 1)
1 s; C# H" j: h) I% v1 j3 _]; J& D7 T- ], ?' D, N7 l
let k 0
4 Y) a7 g% ^+ p. z7 S. U5 Plet new1 0
7 x" f. \  p: F- J  _- f  hwhile [k < people]
; a: c# ~3 g0 I* \2 Z  }[" N% m4 z9 Q! @6 ?
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): w5 s2 }( F; C' H$ W" z
set k (k + 1), t) ^% E$ ?. X
]
) s6 c  _3 n$ v& Iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) w- C% q2 D" N/ b/ a
set global-reputation-list (replace-item j global-reputation-list new)
, i( B4 V, Z  V9 @  q+ @1 Jset j (j + 1)# q$ }) L* a) Z7 T
]
4 q( M7 k2 Z: K( Rend" ?; K6 v2 E( y1 D. |4 n
3 D' l. D2 n3 x. m, P  E7 A; L

2 M! @7 V; }! [& f9 ]
; T# b7 y# \; u& x! i8 {8 l6 {to get-color
  q- T8 S- C$ T6 y5 x# m2 a2 |! j' m" R
set color blue
0 }5 J- V/ }! Q7 P- y! ^# `) I( e; E
end
$ ]0 \( U( U1 k4 A/ f* y( q9 B/ U
/ I* U" c; y; s. i7 `4 J$ B7 A! tto poll-class$ d) u# m% a% S, H6 D8 `
end
2 c9 J3 }+ M6 ^! T, i$ W
$ o) K! P: z9 _9 A6 F& Rto setup-plot1  j2 {5 D. z0 u4 ^" m' I. X

6 @  o& r+ n' P" F8 j. ?& Qset-current-plot "Trends-of-Local-reputation"

/ T. j( i2 ]0 d6 W, R, e
5 I- V) p" s1 ~7 Qset-plot-x-range 0 xmax
7 F9 Q# r7 N' g. n  b% k1 Q, F9 c
0 A! Q: i7 P! k
set-plot-y-range 0.0 ymax
# v1 _% |8 G6 F7 D9 B
end" F( ?$ C. _5 j. F' O; C

" p' c) `, P+ h0 F; Tto setup-plot2
2 ?' Z, V, ?$ }1 g; N. c
( v2 H# h9 S5 o2 cset-current-plot "Trends-of-global-reputation"

: M4 B/ j( m7 D6 m. p9 e# R1 g& Z) `  D/ V% @0 N
set-plot-x-range 0 xmax

. Q6 E8 r! D9 F, [. V$ B) J. Y1 S% l2 f4 _: Q
set-plot-y-range 0.0 ymax

1 O1 x7 x% d/ b; V" hend* {3 ^# P, b7 @) g. z
: X* O7 J) D2 I0 Q* V6 ^
to setup-plot3
  ^9 b* A. @0 |0 S( E4 m) [
  d. e# T' Q% Z0 V2 N; e2 [set-current-plot "Trends-of-credibility"
# d6 b6 d" H: B  K* h2 R. \
) [& Y8 ]& i4 B% X; c( p
set-plot-x-range 0 xmax
, @; l% W8 R8 q0 J: E9 b+ j! r
2 y, P  ^  I4 O8 `  \3 y. t
set-plot-y-range 0.0 ymax
* Z" v6 c  H8 N% \. x8 F( v
end
- L. C+ I, [) e3 X- H5 c1 K5 Y; r0 {3 E, D  |
to do-plots
+ p# Q( m0 V! [set-current-plot "Trends-of-Local-reputation"! J9 \$ P" T1 W; b, n6 L
set-current-plot-pen "Honest service"
1 d! }! Z3 W& bend
1 M9 H' Q2 P7 P8 T0 T. u" ?- m* ]- j7 l) k9 B5 [
[ 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.$ R3 a) n/ b7 [4 v4 w* P$ j3 o

' h6 d/ C% t5 W4 j% ]: U+ u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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